Does anyone know the limits of the stock JZA intercooler?

I'm getting concerned that in a few months time when everything is et up right, that i'll be let down by the intercooler. I hope to run around 18 psi on the hybrids (i could go more but i think that with correct fuelling etc that should be plenty for me ).

Will the stock IC be okay ?

adi
1992 JZA70 - Decat, hybrids.
440's, 3bar map and SAFC coming soon!

http://www.hedgehogsandwich.com

The JZA70 cooler is better than the MA70 cooler, but not by much - and it's well known that the MA70 cooler becomes a bottleneck after even modest upgrades. If you want to run 18psi, you should definitely upgrade to something better.

Norbie!
http://www.norbie.net

I agree, also where did u get those hybrid turbos?

Turbo Technics in the UK. They were being developed for a couple of people on the UK lexus soarer club (which im a member of for engine info). My old ones went at just the right time and i jumped the que and got the hybrids.








The plan is to possibly fit a skyline R33 intercooler...but im not sure yet.
[This message was edited by adi on September 05, 2002 at 04:32 AM.]

[This message was edited by adi on September 05, 2002 at 04:34 AM.]

This is an interesting thread. In the States there have been at least three companies machine in larger wheels and use a 360 degree thrust bearing. The issue with those done in the States was longevity and overall robustness of the modified turbos.

Do you have any input in regards to robustness and do you have any dyno sheets showing 500rwhp on those turbos in a Supra of any kind? That would be very helpful information for the Supra community.

Mark Tozer
94 Supra 915HP
RPS T72
AEM Stand Alone
Black 6 Speed

nope...like i say they're a completely new design..i was the first to have them.

The longevity is certainly interesting... (i've got a two year warranty though so it doesnt matter i guess).

Turbo Technics have a good reputation. They're probably THE best turbo company in the UK and have been going for years. The guy there was very confident when he was building them.. apparently the shafts are from a sunny GTI-R ( ?? ). I have yet to sort out fuelling etc so wont be doing anything for a while.

A pair have also now been fitted to a Soarer in the UK...hes getting them dynoed at the mo, but he will only be running them at around 18-20 psi max, hence the dyno of 500 bhp will probably never appear..as i certainly dont want to run that amount of power as i'll be happy with 400 bhp (flywheel).

I'll obviously keep you all informed about my findings and also that of the soarer owner.

adi

adi
1992 JZA70 - Decat, hybrids.
440's, 3bar map and SAFC coming soon!

http://www.hedgehogsandwich.com

Hi Adi,

Just to let you know the latest on the hybrid install;

The wastegates where too small for the free flow exhaust so we have had the turbine housings re-worked and bigger wastegates fitted by Turbo Technics. Still waiting for ramp time to fit the new housings, at the same time a Wideband Lamda will be fitted in the downpipe so we can get good A/F readings.

Currently running with a 2" restricter in the downpipe to prevent runaway boost (which should be sorted when the new wastegates go on), still on 15psi boost (manifold), the exhaust restricter is causing turbo lag you can feel the boost come in around 3,250rpm, without the restricter it was around 2,500rpm but I feel the power being generated is higher with the hybrid units (loads of rear spin-up on dry straight roads), only the dyno will reveal what is really going on.

After that is sorted out, FMIC, bigger injectors (possibly 600cc high impedance), S-AFC, 3Bar MAP, Fuel Reg, maybe the UK spec MKiv Supra fuel pump and we should be pushing the 440bhp mark around 20/22psi.

At this time I have no aims to run 28/30psi, it is going to cost big money to get from 440bhp too 500bhp, why would I need that extra little power, OK maybe, (I hope the autobox can really tolerate 500bhp).

London Bill.
SoarerTT

Mark;

It took me eighteen months to convince Turbo Technics to build the CT12a Hybrids as a direct replacement for worn ceramics and as an upgrade for anyone wanting to get a bit more from the 1JZ, Giles Rose the turbo designer spent about three months on the project (obviously not just on the CT12a's).

Turbo Technics are the UK's leading turbo development company, they have a long track record working with many of the large car manufacturers and in motorsports, their work is exacting (and suitably expensive), Giles discussed many of the build aspects with me during the design stages so I know he was taking longevity into account and not just improved flow/power outputs.

Take a look at their site;

Turbo Technics

London Bill.
SoarerTT

quote:

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Originally posted by Mark Tozer:
This is an interesting thread. In the States there have been at least three companies machine in larger wheels and use a 360 degree thrust bearing. The issue with those done in the States was longevity and overall robustness of the modified turbos.

Do you have any input in regards to robustness and do you have any dyno sheets showing 500rwhp on those turbos in a Supra of any kind? That would be very helpful information for the Supra community.


That's what innovative,t'netics,and another shop has told me when I've asked about having mine done here in the US-no one wants to touch them. I don't understand why it is harder to rebuild/upgrade the ct12 than the ct26, which are rebuilt by all shops. The 1j dosen't work in seq., which might be a benifit-

Mark Tozer
94 Supra 915HP
RPS T72
AEM Stand Alone
Black 6 Speed

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1989 Supra TT

ahh.. i see bill has now joined the list..hence he can update you the info himself (Bill is the Soarer owner i was previously referring to.. and the one i have to thank for me having my hybrids in the first place ).

adi

adi
1992 JZA70 - Decat, hybrids.
440's, 3bar map and SAFC coming soon!

http://www.hedgehogsandwich.com