MR2 Roadster Owners Club

The Workshop => Maintenance, Problems & Troubleshooting => Topic started by: househead on December 2, 2019, 15:13

Title: Ride Height ... Low, but maybe not this low
Post by: househead on December 2, 2019, 15:13
So I think I've come to the conclusion that my ride height is probably too low (especially given the area I live in, SE London). I'm scraping on the nasty-designed narrow speed humps quite regularly (the wider ones are fine).

Currently on KYB (OEM?) shocks with the green Tein springs. I believe this is 30mm lowered front and back. I'd like to retain a lower-than-stock height, but I feel like raising it a little bit would probably alleviate my problem.

The shocks and springs are <10k miles old, so it would be shame to replace any or both, but I can't feel confident in the car when I turn down residential streets and see speed humps. Strangely they seem to have got worse, I wonder if this is because they've bedded in and the springs are now a bit softer after some use.

What are my options for a reasonably low ride but maybe another 5-10mm of height?

P.S. I checked my tire pressures recently and they had dropped a bit. Topped them up but I'm still getting more scrapes than I'd like.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Topdownman on December 2, 2019, 15:23
You will have to consider coilovers I suppose. That way you can adjust the height until you just stop scrapping and you can soften/stiffen the damping too for more options.

They are easy enough to adjust when new (not so after a while once the alloy welds itself together though)

Either that or back to standard springs!
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 2, 2019, 15:33
Teins are quite low. I believe closer to 40 in effect than 30 to be honest. 
Having seem @stewart@boro on Teins for years, I can tell you he was either scraping or about 1cm from scraping at all times whenever we were on drives.
It's not so much the height but the fact that the springs are almost as soft as stock. Obviously the dampers are as well. 

I remember on Helen's car on TTE springs and stock struts the same would happen. Every compression; scrape. Every speedbump; scrape. Every big bump; scrape. 

Coilovers at same height don't scrape. But,... You lose tons of compliance and comfort. 

So far the only good solution I've seen to be able to have both is the Koni inserts with TTE/Tein/H&R springs.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 2, 2019, 15:40
I've looked into the Koni shocks, some places sell them as a set with springs already fitted, which might suit me better being somewhat of a beginner. Price-wise vs coilovers, there's not *that* much in it ... coilovers run around £150-200 more. I don't think I'd want to lose too much comfort to be honest and that, along with having too many settings and things to fiddle with is what's put me off coilovers so far.

Possibly the Koni route is the one I should look to as it does seem like a good middle-ground.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Carolyn on December 2, 2019, 15:41
You could just put oem springs on it??
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 2, 2019, 15:43
Quote from: Carolyn on December  2, 2019, 15:41You could just put oem springs on it??

How did I know you'd be the one to suggest this? :D

The car looks like it's on stilts to me at stock height.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 2, 2019, 15:44
Quote from: househead on December  2, 2019, 15:40I've looked into the Koni shocks, some places sell them as a set with springs already fitted, which might suit me better being somewhat of a beginner. Price-wise vs coilovers, there's not *that* much in it ... coilovers run around £150-200 more. I don't think I'd want to lose too much comfort to be honest and that, along with having too many settings and things to fiddle with is what's put me off coilovers so far.

Possibly the Koni route is the one I should look to as it does seem like a good middle-ground.
I set my coilovers up when I put them in. Never touched them again other than the occasional twist of the hardness from the trunk/frunk

Konis are the same. Only better quality. Also adjustable
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Carolyn on December 2, 2019, 15:45
What's more important, how it looks or how it goes???

You'd be surprised how soon you'd get used to it.

It's a road car, not an exhibit ;D
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 2, 2019, 15:47
Quote from: Carolyn on December  2, 2019, 15:45What's more important, how it looks or how it goes???

You'd be surprised how soon you'd get used to it.

It's a road car, not an exhibit ;D

You're right, of course! But ... I'd like to think I can somehow have it all  8)
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 2, 2019, 16:32
Quote from: househead on December  2, 2019, 15:47
Quote from: Carolyn on December  2, 2019, 15:45What's more important, how it looks or how it goes???

You'd be surprised how soon you'd get used to it.

It's a road car, not an exhibit ;D

You're right, of course! But ... I'd like to think I can somehow have it all  8)
You can. But it costs.

It's not just spring rate that makes for the bad ride that BCs and MeisterRs give (relative to stock). Particularly the BCs have truly crap bounce and rebound settings. 
You can only change rebound. 

On pricier proper sets you can adjust both. So a bit of saving....
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Tomo70 on December 2, 2019, 18:12
I had the same ptoblem with Tein springs. I could not get on with them. The car seemed to settle after a month even lower than original. Went back to stock. It made the car look silly.

In the end i fit H&R springs. These are superb in my eyes. Car sits nice handling good and ride quality is as good as stock. Plus i dont have an issue with speed humps. Removed Matt brace and fit corky centre brace.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Topdownman on December 2, 2019, 19:51
I think you could also consider eibach springs. I had some on my paseo years ago and really liked them and they really do know their stuff and have a good reputation. I liked the teins because they drop the front more than other brands of spring but that does make your problem worse as its 3 mm lower than all the others at the front. Just going to any other lowering spring would help a bit and would be much cheaper than coilovers.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 2, 2019, 19:56
Quote from: Topdownman on December  2, 2019, 19:51I think you could also consider eibach springs. I had some on my paseo years ago and really liked them and they really do know their stuff and have a good reputation. I liked the teins because they drop the front more than other brands of spring but that does make your problem worse as its 3 mm lower than all the others at the front. Just going to any other lowering spring would help a bit and would be much cheaper than coilovers.
Eibach = TTE right? 

We had them on our Leon Cupra and they were great. Totally different car though.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: s12vea on December 2, 2019, 20:08
Quote from: shnazzle on December  2, 2019, 19:56
Quote from: Topdownman on December  2, 2019, 19:51I think you could also consider eibach springs. I had some on my paseo years ago and really liked them and they really do know their stuff and have a good reputation. I liked the teins because they drop the front more than other brands of spring but that does make your problem worse as its 3 mm lower than all the others at the front. Just going to any other lowering spring would help a bit and would be much cheaper than coilovers.
Eibach = TTE right?

We had them on our Leon Cupra and they were great. Totally different car though.
Yes eibach made the TTE springs
Title: Re: Ride Height ... Low, but maybe not this low
Post by: james_ly on December 2, 2019, 21:29
Coil overs will solve this... But you're trading ride comfort for response. Everything a compromise unfortunately, depends what you want from the car.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: wotugonado on December 2, 2019, 21:47
I preferred my coilovers to standard suspension, sure it was a little harsher, nothing I couldnt live with but the car felt more like a sports car should imo, and the tractor ride height of the originals had to go....
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 2, 2019, 23:00
Sell the Teins and replace with H&R, see how you get on. 
Nothing to lose really
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Carolyn on December 3, 2019, 09:07
Quote from: mr2noob on December  2, 2019, 22:38I think there were suggestions on one thread I ask a few months ago to take OEM springs and cut parts of the coil off to lower the car exactly by how much you want. Maybe that would work?

I took half a coil off my oem fronts...  Taking coils off also stiffens it up.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 3, 2019, 11:05
So I think probably a good first step would be to swap the Teins for something that lowers the car less but is still sufficiently under stock height so it continues to look somewhat sporty. I can then consider the Konis further down the line.

I did a little research last night into the prices and lowering amounts of each of the springs available. Ignoring the exact pricing for now as it varies quite a lot...

Tein S tech = -1.4" (~35.5mm) front, -1.2" (~30.5mm) rear - 2nd priciest
Eibach Pro/TTE = -30mm Front, -30mm Rear - most expensive
H&R = 2 options -20mm Front+Rear or -30mm Front+Rear - cheapest of these 3 options

Of these 3 options, which would be the stiffest springs? Also @Tomo70 did you fit the 30mm or 20mm option?
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Beachbum957 on December 3, 2019, 12:08
I have Tein springs, and they lower more than advertised.  Ground clearance is an issue as well as reduced travel even with cut bump stops.  If you are constantly bottoming or dragging on speed bumps, etc, raising the car is the only option.  With the Tein, I replaced the front rubber top spring isolator with stacked polyurethane isolators which raised the front about 10mm.  Not much, but it helped.

Still, the best solution for more clearance is OEM springs.  Or you could go to slightly taller tires.

Adding Koni inserts won't change the ride height, but will make the suspension work much better with any spring package
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 3, 2019, 12:13
Quote from: Beachbum957 on December  3, 2019, 12:08I have Tein springs, and they lower more than advertised.  Ground clearance is an issue as well as reduced travel even with cut bump stops.  If you are constantly bottoming or dragging on speed bumps, etc, raising the car is the only option.  With the Tein, I replaced the rubber top spring isolator with stacked polyurethane isolators which raised the front about 10mm.  Not much, but it helped.

Still, the best solution for more clearance is OEM springs.  Or you could go to slightly taller tires.

Adding Koni inserts won't change the ride height, but will make the suspension work much better with any spring package
Lesson I think is to avoid the Teins :) 

They are the better spring, but - 35mm in my opinion is too low for the front. I'll measure mine up against Helen's to compare stock vs my setup (BCs) to give an impression of how low you can go and how stiff the springs/struts need to be to not scrape.
I reckon I'm at the very limit. Mine's a daily and i just have to avoid high curbs. Other than that, scrape less in the night
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Topdownman on December 3, 2019, 12:20
If you can get the HRs in 20mm drop then that sounds like the cheap compromise doesnt it?
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Petrus on December 3, 2019, 12:33
Quote from: shnazzle on December  2, 2019, 16:32You can. But it costs.


I disagree. On the same car a reduction of wheel travel ALWAYS comes with extra stiffness.
A better set of shocks/springs will still need to disperse the same energy over a shorter distance.

Having lightened my car a lot, the suspension could do with some attention.
I did a NoNo; shortened the OEM springs. As Carolyne pointed out to me, that also makes them stiffer.
I only cut so much off at restore OEM ride hight so rge extra siffness is marginal but does help it sagging just that bit less on compression.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 3, 2019, 12:53
Quote from: Topdownman on December  3, 2019, 12:20If you can get the HRs in 20mm drop then that sounds like the cheap compromise doesnt it?

It sure does! Think I'll get these ordered and give them a shot.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: AJT13N on December 3, 2019, 13:13
Just bought Eibach Pro springs for my MR2 as I've had them on several of my previous vehicles.

Bought off Autodoc.co.uk, don't know price of TTE or prices for Eibach you have seen but normally these are cheaper by comparison as priced in Germany.

https://www.autodoc.co.uk/eibach/1930204

Currently £135 + delivery
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 3, 2019, 13:19
Quote from: AJT13N on December  3, 2019, 13:13Just bought Eibach Pro springs for my MR2 as I've had them on several of my previous vehicles.

Bought off Autodoc.co.uk, don't know price of TTE or prices for Eibach you have seen but normally these are cheaper by comparison as priced in Germany.

https://www.autodoc.co.uk/eibach/1930204

Currently £135 + delivery

That is actually a very very good price from what I've seen. Which puts me in two minds ... these at 30mm and a great price but potential for still scraping, or H&R -20mm which will almost certainly avoid any future problems. Hmm
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Joesson on December 3, 2019, 13:42
Testing
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 3, 2019, 13:43
Quote from: Joesson on December  3, 2019, 13:42Testing

ItWorks!
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Joesson on December 3, 2019, 13:44
Well, thatseemed to work so will try and post a link to
buycarparts.co.uk
Who are offering Eibach springs at £45.88 for a pair of front springs and £45.88 for a pair of rear springs

https://www.buycarparts.co.uk/toyota/mr-2-iii-zzw3/14535/10213/coil-springs

CANCEL that.
Basket price £183 + for four springs my mistake or poor presentation.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 3, 2019, 13:48
Quote from: Joesson on December  3, 2019, 13:44Well, thatseemed to work so will try and post a link to
buycart.co.uk
Who are offering Eibach springs at £45.88 for a pair of front springs and £45.88 for a pair of rear springs

That doesn't seem to be a valid domain. I think you meant https://www.buycarparts.co.uk/ ? Only it does seem to be £45.88 for a single spring on this site.

The prices on these springs do seem to vary quite wildly tho
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Joesson on December 3, 2019, 13:54
The pondering goes on
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Beachbum957 on December 3, 2019, 14:56
Where are you seeing H&R in 20mm drop?  The only ones I see with that specification is for the older MR2.  The only H&R I see for the MRS is the 30MM drop (29399). 

All of the major companies selling lowering springs (Eibach, Tein, H&R) list essentially the same lowering amount (about 30mm).  I measured 40mm drop in the front with the Tein.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 3, 2019, 15:07
Quote from: Beachbum957 on December  3, 2019, 14:56Where are you seeing H&R in 20mm drop?  The only ones I see with that specification is for the older MR2.  The only H&R I see for the MRS is the 30MM drop (29399). 

All of the major companies selling lowering springs (Eibach, Tein, H&R) list essentially the same lowering amount (about 30mm).  I measured 40mm drop in the front with the Tein.

Yea, it's possible I was looking at MR2 mk1/mk2, these were on ebay and in some cases were not specific about which MR2 model, so some more digging would have been needed to verify they were the right ones. Which I now think they were not.

I've found similar to you at least on sales agent sites, that most lowering springs say 30mm, but manufacturer specs seem to be more exact.

For the teins, I went to Tein.com and they provide specs of 1.4/1.2" (~35.5mm/~30.5mm)

https://www.tein.com/srch/us_search.php?maker=TOYOTA&carmodel=MR2SPYDER&modelyear=default&item=S.TECH&genuine=0

I just looked at the H&R (US based) website and I think you're right, they only have one set available for the mk3/zzw30. They list the lowering as 1.3"/1.2" (~33mm/~30.5mm)...

http://www.hrsprings.com/application/search/results/37/623/2004/

I was unable to find manufacturer-provided specs for the Eibach Pro/TTE springs, but MWR list them as 1.2" (~30.5mm) front and back...

https://www.monkeywrenchracing.com/product/eibach-pro-kit-spring-set-toyota-00-05-mr2-spyder/

So, there's not much in it at all! Bear in mind that all but Tein (perhaps incorrectly in their case), specify the numbers as approx

I think the Eibach Pro at 1.2" and £135 + £9 delivery are winning the race right now. Could add Koni inserts further down the line.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 3, 2019, 21:20
Quote from: Petrus on December  3, 2019, 12:33
Quote from: shnazzle on December  2, 2019, 16:32You can. But it costs.


I disagree. On the same car a reduction of wheel travel ALWAYS comes with extra stiffness.
A better set of shocks/springs will still need to disperse the same energy over a shorter distance.

Having lightened my car a lot, the suspension could do with some attention.
I did a NoNo; shortened the OEM springs. As Carolyne pointed out to me, that also makes them stiffer.
I only cut so much off at restore OEM ride hight so rge extra siffness is marginal but does help it sagging just that bit less on compression.
I meant he can have looks, handling and relative comfort and compliance with a good/expensive set of coilovers or the Konis. Going stiffer is inevitable but overall ride quality doesn't per se have to go down the toilet.


A similar review of someone going from BC to Bilstein said the same; he described it as being able to take his grandma out in his car now and the handling on the track was night/day.
But it did cost him over 2k all in
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Tomo70 on December 3, 2019, 21:33
Quote from: househead on December  3, 2019, 11:05So I think probably a good first step would be to swap the Teins for something that lowers the car less but is still sufficiently under stock height so it continues to look somewhat sporty. I can then consider the Konis further down the line.

I did a little research last night into the prices and lowering amounts of each of the springs available. Ignoring the exact pricing for now as it varies quite a lot...

Tein S tech = -1.4" (~35.5mm) front, -1.2" (~30.5mm) rear - 2nd priciest
Eibach Pro/TTE = -30mm Front, -30mm Rear - most expensive
H&R = 2 options -20mm Front+Rear or -30mm Front+Rear - cheapest of these 3 options

Of these 3 options, which would be the stiffest springs? Also @Tomo70 did you fit the 30mm or 20mm option?

I went with the -30. But they don't feel as low as the Tein and feel more comfortable when bumbling then plenty of control when giving it beans.

Tom
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 3, 2019, 22:37
Quote from: Tomo70 on December  3, 2019, 21:33
Quote from: househead on December  3, 2019, 11:05So I think probably a good first step would be to swap the Teins for something that lowers the car less but is still sufficiently under stock height so it continues to look somewhat sporty. I can then consider the Konis further down the line.

I did a little research last night into the prices and lowering amounts of each of the springs available. Ignoring the exact pricing for now as it varies quite a lot...

Tein S tech = -1.4" (~35.5mm) front, -1.2" (~30.5mm) rear - 2nd priciest
Eibach Pro/TTE = -30mm Front, -30mm Rear - most expensive
H&R = 2 options -20mm Front+Rear or -30mm Front+Rear - cheapest of these 3 options

Of these 3 options, which would be the stiffest springs? Also @Tomo70 did you fit the 30mm or 20mm option?

I went with the -30. But they don't feel as low as the Tein and feel more comfortable when bumbling then plenty of control when giving it beans.

Tom
I can vouch for Tom's car certainly not being devoid of roadholding on his setup. It's my "next best" option after the Konis
Title: Re: Ride Height ... Low, but maybe not this low
Post by: cptspaulding on December 3, 2019, 23:53
I've shared my experience of Eibach springs for the MR2 on another thread here. Cba typing it all out again but the long & the short was they're too stiff for the stock struts.

Race mechanic (Kenneth Brown, Glasgow, former single seater champion) said as much after fitting & setting up the geometry. I changed back to stock springs.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: cptspaulding on December 4, 2019, 00:15
Just to confuse matters further, nobody's mentioned Vogtland springs yet.

Mrs had them on her previous 2. I liked them.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Petrus on December 4, 2019, 09:26
I thínk I have read that Carolyn cut half a coil off the OEM springs on hers. Maybe just front.

I went a full at the front and a third at the rear.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Bossworld on December 4, 2019, 10:04
Dunno if it's worth looking at these as a comparison but as it's Amazon you could always order, measure if they're over/under 30mm and send back

https://www.amazon.co.uk/AutoStyle-85186-23064-Lowering-Springs/dp/B00DP2WUNU/ref=sr_1_3?keywords=mr2+springs&qid=1575453760&quartzVehicle=111-1462&replacementKeywords=springs&sr=8-3

Taking that model number (85186) also brings up a similar result:

https://www.rtecshop.co.uk/pi-springs-for-toyota-mr2-w3-10-1999-06-2007/prod_249506.html
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Carolyn on December 4, 2019, 10:20
One thing I would add.

There's little point measuring springs off the car.  The compression rate varies.  Older springs will compress more than new ones of the same make.

As many have noted here, actual drop on the car often varies from claimed drop.

If you want to cut coils, measure what height a full coil represents on the car, with its weight on the axle.  If you have the wheel off, jack the axle to horizontal and then measure.

Now you'll KNOW what length you're really cutting to.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 4, 2019, 20:01
Soooooo ... I've ordered the Eibach springs at 135 + delivery and I'm intending to pair them with the Koni dampers (eventually). Need to work out how to do the inserts into the stock struts. I did find a topic on here linking a video so I'm going to watch that shortly.

@cptspaulding I hear what you're saying about the spring rates on the Eibach springs, but a) they're (on paper) the lowering springs with the least drop (of the major tried and tested suppliers) and b) I found a thread on SpyderChat listing spring rates, and although they are indeed stiffer than stock, the Tein S tech are quite a bit stiffer still, so they should be an improvement on teins + kyb in that context.

Will install without the Koni dampers for now while I work out what is required and if I have sufficient tools.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: thetyrant on December 5, 2019, 09:57
I looked at all the off shelf spring options before i went for the Teins which while not perfect i think are probably best off shelf option for money, Eibach were my other choice but was a lot more cash so went with Teins.
The Teins i fitted initally with used stock dampers and while it was better it still wasnt great but once paired with Koni sport dampers it was improved in all areas, downsides to them is they are a touch too soft and too low but thats same for all the offshelf kits from what i found, ideally i would like 20mm drop from stock (so approx 10mm higher Tein) and around 15-20% stiffer but only way to get this is custom made, shortening stock springs is another option but i didnt go down that route this time and you need to be very careful doing this.

Looking to future my plan is to convert my stock damper casings (which have Koni inserts fitted) to take a standard coilover spring and adjuster, this way i can play with rates and hieghts without going for expensive/harsh on road coilover kit, the Koni damper works great on road and track just need a better spring option which this would give.


Here is my thread on Koni conversion if you need it - https://www.mr2roc.org/forum/index.php?topic=66831.0

HTH
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 5, 2019, 10:31
Thanks @thetyrant it was partly your thread linked above that gave me the confidence to go with Koni inserts myself and I see there's a video linked there which shows you how to do it ... very helpful!
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Beachbum957 on December 5, 2019, 11:47
We have run the Tein springs with the stock KYB struts and with Koni inserts.  The damping of the KYB didn't match the springs well, but was OK.  The Koni are much better and can be adjusted to give a much better ride.  On relatively smooth roads, My wife claims the ride is about the same as OEM springs and KYB.  The ride is harsher on big or really sharp bumps, but the front springs are almost 40% stiffer (but much less preload) and the travel is less, so that isn't unexpected. As mentioned in an earlier post, we raised the front about 10mm by replacing the front rubber top spring isolator with stacked polyurethane isolators which had no impact on ride, but did give a bit more gloundclearace

Based on known spring rates, probably the Eibach would be the softest, but Eibach no longer lists the springs as available, so any being sold are old stock (or counterfeit)
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Petrus on December 5, 2019, 12:01
Quote from: Beachbum957 on December  5, 2019, 11:47the front springs are almost 40% stiffer  and the travel is less,

Sums is up really; the lower the stiffer.
Also stiffer springs dictate equally increased rebound damping.
Although the sales talk states that Teins are designed to work with OEM damping, that is impossible bs; the dampers need to dissipate more energy on the outbound in less time too.

Took the preload out of the equasion as this does not affect the spring rate unless you get into the range of progresive winding.

Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 5, 2019, 12:29
Quote from: Petrus on December  5, 2019, 12:01
Quote from: Beachbum957 on December  5, 2019, 11:47the front springs are almost 40% stiffer  and the travel is less,

Sums is up really; the lower the stiffer.
Also stiffer springs dictate equally increased rebound damping.
Although the sales talk states that Teins are designed to work with OEM damping, that is impossible bs; the dampers need to dissipate more energy on the outbound in less time too.

Took the preload out of the equasion as this does not affect the spring rate unless you get into the range of progresive winding.


The Teins are progressive to my knowledge. That was their big sell vs the TTE/Eibach. 

Never actually seen the Teins  though so can't confirm
Title: Re: Ride Height ... Low, but maybe not this low
Post by: tricky1138 on December 5, 2019, 12:49
I was told they were progressive. Managed to find the photo I had.

(https://i.imgur.com/xClJbOu.jpg)
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Topdownman on December 5, 2019, 12:58
The eibachs will be progressive too. I would think it would only be the very cheapest lowering springs that would not be
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Beachbum957 on December 5, 2019, 13:19
Tein, H&R, and Eibach are all progressive.  Of course, none publish the full rate curve, and preloads vary, so it is hard to compare one to another
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Petrus on December 5, 2019, 13:59
Quote from: Topdownman on December  5, 2019, 12:58The eibachs will be progressive too. I would think it would only be the very cheapest lowering springs that would not be

That is my take on it too.
This does not mean that the softer part is as soft as OEM and the OEM dampers will still need to cope with more force.
The stiffer part is ususally relaitvely short and more of a bump brake/stop for the last third or so of travel.
Also progessive usually is two stage.

Now even adjustable overcoils are only adjustable for ride hight. The spring characteristics are what they are.

All in all it is a very tricky subject and very much more so for the very much more varied conditions and priorities on the road than on the track.

Now, there is a factor that is generally overlooked; the wheel weight. That upsets the cart agaín ;-)
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 5, 2019, 16:31
Quote from: Topdownman on December  5, 2019, 12:58The eibachs will be progressive too. I would think it would only be the very cheapest lowering springs that would not be
I've definitely manhandled the Eibach/TTEs and they're most certainly not progressively coiled
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Tomo70 on December 5, 2019, 16:56
The other reason I ended up going for H&R springs was that they are TUV approved. I don't think Tein are

Title: Re: Ride Height ... Low, but maybe not this low
Post by: Petrus on December 5, 2019, 17:00
Quote from: Tomo70 on December  5, 2019, 16:56The other reason I ended up going for H&R springs was that they are TUV approved. I don't think Tein are



Correct.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: househead on December 5, 2019, 21:31
Quote from: shnazzle on December  5, 2019, 16:31
Quote from: Topdownman on December  5, 2019, 12:58The eibachs will be progressive too. I would think it would only be the very cheapest lowering springs that would not be
I've definitely manhandled the Eibach/TTEs and they're most certainly not progressively coiled

Does not progressively coiled 100% mean not progressively sprung? Eibach advertise them as progressive springs.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: shnazzle on December 6, 2019, 00:05
Quote from: househead on December  5, 2019, 21:31
Quote from: shnazzle on December  5, 2019, 16:31
Quote from: Topdownman on December  5, 2019, 12:58The eibachs will be progressive too. I would think it would only be the very cheapest lowering springs that would not be
I've definitely manhandled the Eibach/TTEs and they're most certainly not progressively coiled

Does not progressively coiled 100% mean not progressively sprung? Eibach advertise them as progressive springs.
No. But on closer inspection, the bottom coil has a slightly smaller gap.

So, I guess progressive. The same way that a palm tree in my back garden would make it a tropical resort
Title: Re: Ride Height ... Low, but maybe not this low
Post by: thetyrant on December 6, 2019, 10:17
Eibach TUV cert has their Pro kit as linear spring rate see here - https://media.carparts-cat.com/pdf/Einbau/153450/112/E1082001.PDF

However it wouldnt be first time ive seen that and then when you see springs they had slight difference in coil spacing one end making them look like progressive wind, i think the thinking is that the tighter wound coils are compressed under car load which gives the lowering aspect and retains spring location on droop, but the actual spring rate once compressed by vehicle weight is linear hence the TUV spec.

I would like to know the real world ride height (arch lip to wheel centre) on the Eibach kit to see how it compares my car on Teins.

Title: Re: Ride Height ... Low, but maybe not this low
Post by: Petrus on December 6, 2019, 18:34
I measured ride hight as Toyota specs it; from the suspension arm bolt center to road surface. Adjusted (read cut) the OEM springs to suspend the car within 5 mm. lower, resulting in a dynamic ride hight at least as high on average.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Carolyn on December 6, 2019, 18:41
Just to add idiotic complexity....

We had to get special coil springs made for the inside of a rocket engine. They were of similar proportions to suspension s[rings, but shorter  They were a specific rate and length and made of special stainless.  They cost a couple of hundred quids, as I recall.

The point being -it is absolutely possible to have springs made to your own spec, for surprisingly little dosh.

If you want to know why we needed springs for a rocket engine, get ready for a long and complicated.....
Title: Re: Ride Height ... Low, but maybe not this low
Post by: Petrus on December 6, 2019, 19:29
Yes, looked at the custom spring option:

http://www.dfaulknersprings.com/

Note the spring seat options too. Would be an easy solution for some here.


And yes, I´d be interested to know why you to needed them  O:-)
Title: Re: Ride Height ... Low, but maybe not this low
Post by: steve447 on January 18, 2020, 01:10
I just picked up some used adjustable spring platform converted OEM struts with adjustable Koni sport inserts for exactly the reasons talked about in this thread. They are 250lb front and 350lb rear spring rates, should have them fitted over this weekend.  Currently have newer OEM struts with teins which are pretty good for the money but a little too low and underdamped. 
Title: Re: Ride Height ... Low, but maybe not this low
Post by: thetyrant on January 18, 2020, 04:45
Quote from: steve447 on January 18, 2020, 01:10I just picked up some used adjustable spring platform converted OEM struts with adjustable Koni sport inserts for exactly the reasons talked about in this thread. They are 250lb front and 350lb rear spring rates, should have them fitted over this weekend.  Currently have newer OEM struts with teins which are pretty good for the money but a little too low and underdamped. 

Nice that's my next plan for mine to make best use of my konis, picture please :)
Title: Re: Ride Height ... Low, but maybe not this low
Post by: steve447 on January 18, 2020, 14:29
Picture as requested.  The yellow sport shocks were powder coated black along with the modded oem strut housings...they did a very nice job.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: thetyrant on January 18, 2020, 17:50
Nice one although im not so sure on the way they have the spring at the top but sure it will be fine on car, I will be interested to see how it rides with them on as those rates are about what I was thinking for mine when I get around to the spring conversion to compliment my Konis.
Title: Re: Ride Height ... Low, but maybe not this low
Post by: steve447 on January 18, 2020, 19:01
The blue springs at the top are helpers with little to no rate, they are just there to stop the primary spring rattling around when the shock is extended...will post some feedback after I fit them
Title: Re: Ride Height ... Low, but maybe not this low
Post by: steve447 on January 22, 2020, 03:52
Just got back from the first drive with the new to me Koni Coilovers.  Set up about the same as my tein lowering springs so 1" or so drop at the back and a bit more at the front.   I am impressed so far, not too harsh at all, very composed, hit a big compression dip at speed and waited for a bottom out but it just soaked it up.  Will venture a bit further at the weekend and get some freeway/motorway miles in.  250lb front 350lb rear with stock roll bars  and s-drives. 
Title: Re: Ride Height ... Low, but maybe not this low
Post by: ooch on January 23, 2020, 15:30
I bought my car and found out it had Apex lowering springs on:

https://mr2-ben.co.uk/products/484 (https://mr2-ben.co.uk/products/484)

Has anybody else used these? Are they any good as I never see them mentioned. Ride seems ok but I've never driven a standard set-up MR2 so can't compare.