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Anyone Ever Used A Supra Ic In An R33 ?

discopotato03
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discopotato03 Grand Master

discopotato03

Posted
Posted

The time has come to get the GTRS into my GTS25T and I don't think the R34 GTt SMIC is going to cut it soo I need something a bit better .

Last trip to SKs I noticed a black Toyota looking IC on a shelf with its barb fittings on the same end so I asked the question and its looking for a new home .

At this point I should add that I'm not doing great feats of re-engineering with this S2 Coupe so any updates now will be adequate and thats all meaning no overkill . I'm looking for an OE type intercooler that needs minimul work to fit , no cutting , and using as much of the factory plumbing as possible . I want the engine bay to look as std as possible and to date it does bar an Apexi boost control valve and Z32 wiring at the AFM .

Anyway I suspect this intercooler is either from a 7MGTE powered MA70 Supra or possibly , or hopefully , from a slightly later JZA70 one . Modified with straight inlet/outlet .

Anyhow this IC last saw use in Garys race R32GTST when it had the RB20DET in it a while back . He thinks it was originally from a Celica GT4 Group A Rally model roadie but I cant find pics of their std intercooler .

Anyway whatever all the IC has to do is be about twice as good as a GTt SMIC and it will be good enough for my roadie with maybe 240-250 Kws .

ATM she has a ported head with Poncams and a Nismo catback with a 3" cat . The usual PFC/Z32/740 Nismo injectors .

Fingers crossed I'll have a torquey responsive low to mid 200s car that looks about as factory as possible provided you don't look too close to the HKS turbo .

Thoughts ?

Cheers A .

ARTZ Grand Master

ARTZ

Posted
Posted

I reckon it would work fine as I was considering the same at one stage..You dont strike me as the sort of guy to be getting your turbo super hot sitting on redline for any extended periods of time (or am I mistaken) so it shouldn't have to much trouble keeping your intake temps under control..If you were sliding it around a track all day I'd consider something bigger though. Although remembering efficiency is just as important as size, those little GKtech coolers seem to do a good job on the 2lts and its not very big at all..I would think a stock supra cooler would be fairly efficient.

jet_r31 Mentor

jet_r31

Posted
Posted

going back in my mind, the old supra stuff, while being a good size, has a bad pressure drop, i had one in

my corrolla 10yrs ago, made 110rwkw on 20psi on a toyota 5K , i picked up to 140 rwkw on 20psi going to a decent core, from memory the pressure drop was 6 ish psi. Whilst not first hand also saw the same thing with a dyno test on a vl turbo in a magazine at 180-200rwkw ish.

I'd go china return flow in flat black myself

cheers

darren

discopotato03 Grand Master

discopotato03

Posted
  • Author
Posted

Yes I've been searching and most people say the same thing , poor internal flow . Maybe ok for stdish RB20 but thats about it . The 2JZGTE powered ones I think used a really thick side mount but debatable if it would fit and work in an R33 .

Does anyone know if anything is available that has the inlet and outlet at the same end like the Supra ones that would fit in the nose of an R33 ?

I'm a bit reluctant to use a cheap return flow front mount but I don't think the aftermarket caters for much that doesn't need cutting to fit and is well made .

A .

jet_r31 Mentor

jet_r31

Posted
Posted

Those toyota ones also split the tanks easy, makes it hard to trace that boost leak. I don't get your reluctance to run china?,

why overcomplicate something so simple? they are cheap and work better than anything anyone is proposing or the toyota one you where

contemplating

cheers

darren

GTSBoy Grand Master

GTSBoy

Posted
Posted

The layout of the Supra cores should be good for two things. 1) Low pressure drop. 2) Low thermal efficiency.

This is because they have a larger number of shorter tubes, giving a lower velocity and less length to flow through. That causes both the lower pressure drop and the reduced efficiency.

Sadly, because they are a shit design (the tanks are basically just constant diameter pipe leading to high velocity at one wnd and low at the other and hence poor distribution across the core) they instead exhibit low thermal efficiency AND high pressure drop, so they suck badly. Perfectly good for a low power 7M-GTE, but little else.

limpus Mentor

limpus

Posted
Posted

I haven't used one on a skyline but my old JZA80 sidemount now resides in a mates S13...needed some custom piping to fit it as its a chunky mofo...but it was thick for a side mount...almost a cube shape...

FYI the standard jza80 sidemounts are as decent as sidemounts get...many guys with supras are pushing upwards of 260rwkw with the stock units...they flow and cool extremely well but being small they are more prone to heatsoak so probably not suitable for trackwork or drifting...but if you can get it to fit in a daily you can't go wrong...decent ducting to the cooler is also as important as the cooler itself...

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