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Hillclimb and Turbo car (s)

Started by tets, September 29, 2019, 12:00

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tets

And it's back out of the workshop for logging and mapping after a machine polish and hand coat of soft 99
Bit rich in places (and lean in a couple of cells at the bottom end) but dialling it in it and knock looks ok
Driving lovely and smoothly with 8psi, 2ZZ injectors and the PFC as opposed to 4psi last season on the standard ECU
And some wonderful wastegate flutter 😁

Also got the flat floor done at the back to cover the big gap where the fuel tank was (either side of the intercooler) but didn't take a pic as I was done laying on my back!

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tets

Had a bit more time logging / messing yesterday afternoon

Looking at injector duty, knock and air temp

What is impressing me most is the air temp using the intercooler in the gap where the tank used to be

Ambient temps were 19 / 20 degrees and tootling in the village it was reading upto 28 but when I got the speed up it dropped to 24 degrees 
Max average knock is 17 with max peak at 20 so happy with that for the time being
Injector duty maxed at 76% at WOT so I can also cope with that.

Need to keep logging and checking but first impressions are really encouraging

Oh and **ck me it's quick!

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tets

#127
Just put my entry in for the June 14th Barbon Hillclimb.
It's near Kirkby Lonsdale in North Yorkshire if anybody fancies a day out!

Been mapping / logging again today and it's getting there - a bit on the safe side but better that than the other way!
Also started an online training course with Garrett Turbo's - the exams are a bit easy but got levels 1 & 2 done today - pretty informative so far!


thetyrant

Quote from: tets on May 19, 2025, 18:46Just put my entry in for the June 14th Barbon Hillclimb.
It's near Kirkby Lonsdale in North Yorkshire if anybody fancies a day out!

Been mapping / logging again today and it's getting there - a bit on the safe side but better that than the other way!
Also started an online training course with Garrett Turbo's - the exams are a bit easy but got levels 1 & 2 done today - pretty informative so far!


Might pop along if weather is good, used to go every year but havent been for awhile, will come say hello if i do :D

Ex-2005 roadster  owner, i will be back :D

tets

Quote from: thetyrant on May 20, 2025, 12:23Might pop along if weather is good, used to go every year but havent been for awhile, will come say hello if i do :D



It was great last year in July! I didn't do the June but apparently the weather was awful and a complete wash out!
Be good to meet you if you're about ;D

tets

Got a bit more time today - front camber adjusted to around -3.75 (with my dodgy Chinese camber gauge) and the back at -3. Need an alignment before Barbon as I'd had the rear toe over exaggerated in for the really tight and twisty Scammonden last year. Aim was to get it turning in quickly which worked great - Barbon is fast so dropping it to a "tad" of toe in rear with the front a "tad" of toe out.

Bought a couple of new handbrake cables a couple of years ago, but when I refurbed the callipers the cables were moving freely (handbrake was crap) so been oiling and moving them back and forth. These cables were on the car when we bought it 10 years ago. Did the adjustments today and I have a fantastic handbrake at 3 notches on full.

Also bought some of Dev's door bushings a few years ago and forgotten I had them - came across them earlier so they got fitted and waxed!

Was hoping to get the aux belt changed but I'd left my 1/2" 19mm socket in the camper so that's for another day!

More mapping tomorrow and Saturday as I'd done several 2nd, 3rd and the odd 4th gear pulls with encouraging results and then did a full 2nd, 3rd, 4th and a 5th gear pull and knock went bonkers on the 5th gear pull. Not sure why so need to figure that out (I'd had a single spike but thought that must have been false knock) but then everything went tits at the end. The log is below.
I've got a helper tomorrow so we'll log each gear seperately and see where we go - max boost I'm seeing is 7psi on waste gate pressure with no creep

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tets

Had a great day yesterday and the weather was a lot better than the forecast - only light rain here and there

Was expecting to get well beaten by the 2 guys sharing the 500bhp Cayman GTS Turbo and 1 of them did but I was leading the other guy up until the last couple of runs - I had chance to get him on the last run but too sideways out of the hairpin cost me. I did beat the 3.2 Boxster though
Also beat the S2 Elise, the GR Yaris and several Lotus 7 derivatives
Brilliant day and looking forward to the July event

https://youtu.be/qNVr8IcK06M
https://youtu.be/unVtLK6uq8g

tets

amd a few pics of the day!
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tets

and more
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tets

and more
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thetyrant

Sounds like a good day well done  :) , weather was awful with me and forecast looked bad down there so never made the trip down, wish i had not but glad you had fun :D
Ex-2005 roadster  owner, i will be back :D

tets

Quote from: thetyrant on June 16, 2025, 09:01Sounds like a good day well done  :) , weather was awful with me and forecast looked bad down there so never made the trip down, wish i had not but glad you had fun :D

The weather was a surprise, just a light shower in the morning and 15 minutes over lunch. The sun even came out to dry the track after lunch!
Cracking day and the car ran great - I had retarded the timing around 6k due to knock spikes when logging and the map is a bit conservative - I've got time to alter it to hopefully give me a few more horses before the July Barbon.

Was really pleased to beat the S2 Elise as it looked a proper spec thing
Ended up 20th overall which was ok although as I was running in the top 15 for most of the day and getting quicker on each run (except putting a wheel on the grass on the last run)

thetyrant

Wow looking at the car park in background lots stayed away! i remember going many years ago and that field in bottom was full and overspilled into another  :o
Ex-2005 roadster  owner, i will be back :D

tets

Quote from: thetyrant on June 16, 2025, 14:40Wow looking at the car park in background lots stayed away! i remember going many years ago and that field in bottom was full and overspilled into another  :o

Yeah there were less than usual - they reckon about 200 all told

tets

#139
Just looked at the entry for the July 19th event again at Barbon - looks I'll be up against a Cayman 987S 3.4, an Audi TTRS, and 911 3.8 (think it might be a 996 GT3), MX5 Turbo and a Boxster S although the last 2 have a weird class against them so think they might be entered into 2 championships!

I need to do more mapping to try and squeeze a bit more out of it - going to see if there is anymore weight I can lose (from the car) and try it with just 1mm toe out F and 1mm toe in R
May also try the front anti roll bar on full stiff and soften the rear as it was a bit tail happy out of the hairpin! Might dig in a bit better.
I can also mess with the rebound on the EDFC but I've felt quite confident and don't want to mess up the balance, just want to go quicker (which might be a me thing)  ;D

Any advise from previous messers is greatly appreciated

EDIT: I think there is also an M3 in the weird class aswell! There are also a couple of other normally aspirated MR2 Roadsters in the entry

thetyrant

When I was sprinting mine I took rear arb off like many of championship cars, hugely improves rear traction allowing weight to transfer, I ran front whiteline full stiff with koni sports and tein springs, was a very predictable setup.

Many people go too stiff as they wrongly think it's what a track car should be, with sticky hot tyres maybe but short sprint events you need compliance.
Ex-2005 roadster  owner, i will be back :D

tets

Quote from: thetyrant on June 20, 2025, 18:27When I was sprinting mine I took rear arb off like many of championship cars, hugely improves rear traction allowing weight to transfer, I ran front whiteline full stiff with koni sports and tein springs, was a very predictable setup.

Many people go too stiff as they wrongly think it's what a track car should be, with sticky hot tyres maybe but short sprint events you need compliance.

With you there - I was running 10F and 8R on the EDFC which is just over half but it gives me confidence - I can handle the arse end moving around but feel it's got more in it
I'll stiffen the front ARB, soften the back ARB as above but keep it on for the time being, but drop the rebound even more, maybe try 16F 4R for 1st practice and see how it feels.
Obviously I'll take it for a run out but Trafford Park / Eccles isn't really going to cut it for testing ;D

Then there's tyre pressures - I was running 24F and 27R so I've got the option to drop them a couple of Psi as they are stiff sidewalls (Accelera 351 Sport Xtra)

thetyrant

Quick test I did between runs before removing was just take 1 rear drop link end off which renders bar inactive quickly and easily, found it much easier to stop over rotating after that, I ran stock bar at end as a compromise because i was doing trackdays as well.
Ex-2005 roadster  owner, i will be back :D

tets

Quote from: thetyrant on June 20, 2025, 21:42Quick test I did between runs before removing was just take 1 rear drop link end off which renders bar inactive quickly and easily, found it much easier to stop over rotating after that, I ran stock bar at end as a compromise because i was doing trackdays as well.

Good plan - I'll bear that in mind, cheers

tets

got it in the air today to soften the rear anti roll bar - front was already on full stiff

Had a big problem I didn't't know about at Barbon. When I'd done the handbrake I checked and it seemed fine but today I noticed the insides of the rear wheels were black with brake dust and tried spinning the wheels. The rear brakes had been binding badly!
Now backed off and spinning nicely and that could be the second I was chasing!

Got the MOT on Friday and apart from wiring a new horn up I'm pretty confident it will go through without issue

Got the car on 4 bits of worktop that line up perfectly with a spirit level so alignment next - 1mm toe out front, 1mm toe in rear and as much camber as I can get all round!!

More mapping Friday and next week to get some more ponies out of it and speakers coming out of the doors to compensate for my diet!

Put my July 19th entry in to Barbon today so again, if anyone fancies a day out I'll be there! 

tets

Here's a link to the entry so far although there will be more late entries
A supercharged 5ltr Jag F-Type has entered in my class now aswell - Some cracking cars entered and I'm really looking forward to it - praying for a dry day!

Barbon Entry



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