Black 2002 and 2001 MR2 - Tommy Zooms / Hachiroku track car build

[Bernie]

Helen mentioned that in my quest for "what's next" when this engine goes, that I should just build up my 1zz.

Historically this has always been the path I wanted to go down, but the costs just seemed ridiculous.

Don't need specifics but, how far off from a good 2zz conversion is your engine build? Including s60 and mapping.
Do you reckon it's worth it over 2zz?

I love the character of the 1zz...

I'll make a decision on what I'm going to do 1 day before I buy my first part haha.

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HI shnazzle

well depends how you look at it,

2zz conversions can be done pretty cheap if your willing to put a used engine in your car and hope it dont go wrong and if your able to do the wiring and fitting your self this option would be cheaper, i could of fitted the engine but not done the wiring so after looking at the cost if i paid someone to do wiring etc and brought a engine and got all the swap bits and had a the gear box sorted it would of worked out a bit cheaper but not much

me personally if i was to fit a 2zz i would of at least of rebuilt it with stock parts, new oil pump, water pump etc, but knowing me i would of uprated things anyway increasing the cost, i have seen it happen to a few people and the last thing i would want to do is fit a used engine and get it running for it to fail 6 months down the line and have to pull it all out and rebuild it anyway. so if i was to go this route it would of cost more than what i have now. this is what i class as a good 2zz conversion

its hard to get into cost as you can spend as much or as little as you like on either engine and you never really know till you pull the trigger.

as you say i love the character of the 1zz and like the way it sounds the way it delivers the power the response and how it revs now its all built up, and i know i have a solid engine, anyone i take out in it cant believe it only has 180bhp they always think its more as its very responsive and really picks up past 4.5k but think the ecu/map plays a part in that.

dont get me wrong the 2zz is a good engine but i always like to go for something different the underdog you could say, and i felt we could make the 1zz the engine it always should be, for me personally it wasn't about ultimate power figure on a dyno but how it feels, i have had 250/300bhp cars and if i want that i wouldn't of got a mr2, if i had the opportunity to do it all again i would do the same thing and build a 1zz, but thats just my personal opinion.

cheers tommy

Totally agree with Tommy with mine FGRob went down the route of improving the 1zz to 171bhp and ok wasn't cheap but completely reliable, been absolutely flawless and puts the power down so well due to the Apexi ECU and remap, it doesn't hang about when pushed

[Bernie]

HI All

Small update

After a long search after seeing this item on Bernie's car at ding day 2 years ago i think we finally got our hands on a carbon mods rocker cover, great bit of kit at a reasonable price, makes nice edition to the engine bay and obviously adds 20bhp   s:D s:D  

 

Cheers Tommy

No 25bhp !!

[Jrichards20]

That's on my to do list, a rebuilt high spec 1zz at some point along with a load of other conversion like a k20. But think a 1zz would be the next one. Need some more money  s:) s:)

[tommyzoom99]

That's on my to do list, a rebuilt high spec 1zz at some point along with a load of other conversion like a k20. But think a 1zz would be the next one. Need some more money  s:) s:)

if my engine ever goes bang, hopefully not for a while yet, but i will be going K20 for sure

cheers tommy

[tommyzoom99]

Hi all

went back to oulton park this week was a great day tracking the mr2



cheers tommy

[hachiroku]

Quick on-board from the afternoon   s8) s8)  

[youtube:312jw6yc]_Izw8yhu7J4[/youtube:312jw6yc]

[1979scotte]

You lucky boys.

[tommyzoom99]

Had the car weighed on the weekend

946kg with very little fuel in it, not bad i thought.

cheers tommy

[Topdownman]

Sounds good to me, so is that over 188bhp per ton then?

[1979scotte]

Had the car weighed on the weekend

946kg with very little fuel in it, not bad i thought.

cheers tommy

Nice and light.
Mine was 1050 with hardtop and half a tank.

[tommyzoom99]

Sounds good to me, so is that over 188bhp per ton then?

yeah about that which aint to bad really.

Had the car weighed on the weekend

946kg with very little fuel in it, not bad i thought.

cheers tommy

Nice and light.
Mine was 1050 with hardtop and half a tank.

its lighter than i thought it would be, i know we removed the soft top and things but was pleasantry surprised.

cheers Tommy

[1979scotte]

Sounds good to me, so is that over 188bhp per ton then?

yeah about that which aint to bad really.

Had the car weighed on the weekend

946kg with very little fuel in it, not bad i thought.

cheers tommy

Nice and light.
Mine was 1050 with hardtop and half a tank.

its lighter than i thought it would be, i know we removed the soft top and things but was pleasantry surprised.

cheers Tommy

Soft top is quite heavy so that would help.
I would like to get mine under the ton but it wont happen. I keep adding bits.
Its eaiser just to add more power.  s:lol: :lol: s:lol:

[jonty]

Tommy the car looks great, I've read back a couple of pages on lunch today but can't see what else you've done to reduce weight other than the soft top removal -have I missed more details?

[tommyzoom99]

Tommy the car looks great, I've read back a couple of pages on lunch today but can't see what else you've done to reduce weight other than the soft top removal -have I missed more details?

HI jonty

Thanks buddy

Well its lots of little things really like removed the airbags, door speakers, stereo, soft top, most of the plastics behind the seats with just the bare bones to cover the metal, trimmed down the bar behind the seats removing all the soft-top tabs, fitted a light weight steering wheel, all the front end plastics apart from the under tray that connects to the front bumper, removed the spare wheel, tools, removed the AC pump all the piping and AC rad up front.

Then on the rear we have swapped out the stock exhaust which is known to be very heavy with aftermarket full system and manifold removed all the under tray / nappy etc removed the stock air box and system for a carbon job and (surprising how heavy the stock air box is) and got a carbon rocker cover

Swapped the wheels although i doubt there any lighter than stock maybe a little bit

So just lots of little things really I'm sure there's something i forgot, but it seems to have all added up and made a reasonable saving in weight.

Cheers tommy

[tommyzoom99]

Hi All

a small update from me, with all the front plastics removed there has always been a large area in the front of open space behind the undertray and last cross member, so after looking at the facelift brace we decided to design something on CAD to bolt to the brace and cover this area and give more of a flat floor type thing, it extends well under the front out of site and covers all the water pipes etc i doubt it actually does anything but looks quite good i think

so this was before



this is what the pplate looks like fitted to the brace



and the brace fitted to the car, although it has to come back out again to get the brace powered coated but as a trial fit it all fits and looks good imo





cheers Tommy

[jvanzyl]

That's pretty cool - did you take inspiration from the beatrush underbody trays? I'm willing to bet your design is one heck of a load cheaper!

[tommyzoom99]

That's pretty cool - did you take inspiration from the beatrush underbody trays? I'm willing to bet your design is one heck of a load cheaper!

  s:D s:D  yeah pretty much, you can buy that beatrush brace which has a similar plate on the brace which costs hundreds and cant see any benefit over the stock brace so thought we would keep our brace and have our own plate made which cost 60 quid so a lot cheaper! i had it made out of 2mm stainless so weighs a couple kg,

cheers tommy

[jvanzyl]

Wow - I'm surprised at the actual cost of the stainless! I take it aluminium is then even more?

[tommyzoom99]

Wow - I'm surprised at the actual cost of the stainless! I take it aluminium is then even more?

The place i used had a minimum charge of 60 quid so it probably would cost less than 60 quid each if i got a few of them made up, i never really looked at having it made in aluminium i doubt it would cost any more aluminium is pretty cheap these days, still undecided on what to do with the stainless although harder wearing than the aluminium it might be wise to paint it or at least clear coat it as i quite like the stainless finish

cheers tommy

[jonty]

Hi Tommy, thanks for the info on the weight reduction, all those little bits add up. Brace looks cool!

[tommyzoom99]

Hi Tommy, thanks for the info on the weight reduction, all those little bits add up. Brace looks cool!

HI Jonty

no problem i was quite surprised at the weight TBH, thanks, not a bad edition to the car for something i knocked up on CAD on my lunch, really tidy's up that area of our cars, although i probably should add 2kg to the overall weight now   s:D s:D  

cheers tommy

[hachiroku]

Been a little while since the last update, car's been tucked up over the winter and has been treated to some nice upgrades while waiting for spring to arrive...

How it sits currently:


Current state of disassembly mainly due to spending a fair bit of time on these recently:


Picked these up at the back end of last year, driver's side had taken a bit of a beating, numerous cracks/broken mounting tabs/dodgy repairs that all needed sorting. Plus the mounting tabs that weren't broken needed modifying to get the panel sitting right on the car with even gaps all round. They also needed a fair bit of block-sanding to get them flat and smooth again before paint. It all took a bit longer than anticipated but was a good learning experience and quite satisfying by the end of it all.

During prep:


In primer:


They've now been sprayed in colour but (annoyingly) there was a small blister and some 'splitting' of the 2-pack paint on the nearside wing, so it's gone back to the sprayers to be sorted. Going to collect this Friday so we'll post some pics of the finished article soon.

Next on the list was some shiny new engine mounts from BRD:


Haven't driven the car since fitting them but we did fire it up the other day, just sitting on the drive revving the engine the difference is like night and day - feels so much more crisp and responsive. Can't wait to experience it on the open road.  s:) s:)

Also fitted some new silicone coolant hoses for the front end as the OEM rubber was looking a bit tired:


Last but not least, after finding out about Streetwerks through the ROC we decided to order one of their bored throttle bodies. Fully refurbished and opened out from 55mm to 59mm with a new butterfly valve to suit and all new OEM seals. Delivery is expected this week but we won't get around to fitting for a little while yet as the plan is to source some 2zz injectors and get it booked in for a remap.

The nice chap at SW sent me some pics through before he shipped them:






Hopefully we'll see a decent gain with the extra fuel/air and map, especially since it was never remapped when we made the free flow intake last year. Roll on the next track day.   s:bounce: :bounce: s:bounce:

[shnazzle]

Looking forward to see what you think of the bored out throttle body.
Not tempted to put it on before the remap? Curious to see what difference it makes to you. Takes 20 mins to fit  s:) s:)

[1979scotte]

Not surprissed you have noticed such a difference with the brd mounts.
My kirks inserts made a big difference on the turbo car.

[hachiroku]

Not tempted to put it on before the remap? Curious to see what difference it makes to you. Takes 20 mins to fit  s:) s:)

Easy to fit yes, but we're running no maf/02 sensors and the 1zz Injectors are maxed out so not really worth it until we can uprate the fuelling and get it on a dyno  s:) s:)