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Registered:
October 2004
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1g-gteu tri turbo ? Why not ?
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Sat, 16 October 2004 15:22
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I have a GA70 with a 1ggteu from 1989, turbos are putting 13.5-14psi on the engine from six months ago, stock was around 7 psi(I am not sure). Above 4000rpm the car feel quickly and my clutch slips in fourth at 5000rpm (this never happened with stock or at 11psi).
What do You think about putting a thirth ct12 on it ? The full boost could become to start at 3000-3500rpm and have a better air flow efficiency that just having two turbos at the same pressure ? (like a single turbo upgrade)
Full 3" exhaust, 2.5" down pipe, no cats, 3" muffler, custom intercooler 60x30x7, water alcohol injection (premium gas is not frecuently available and there is hot days in my country 36°c --Bolivia), electrical 14" fan, 17" wheels, lower suspension (35mm), bomex body kit and several aesthetics modifications to look better this black Supra.
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Location:
Brisbane
Registered:
May 2002
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Re: 1g-gteu tri turbo ? Why not ?
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Sat, 16 October 2004 15:36
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Getting a turbo to spool up well when fed by just two cylinders is tricky... it can be done but you'll have to put a lot of thought into manifold design, otherwise it will be laggy as hell and just plain suck. Frankly I can see this being a lot more trouble than it's worth... think of all the piping you'll need! Surely you can get a cheap second-hand single turbo from somewhere? A well-matched single turbo is likely to work a lot better than a bodged-up triple-turbo contraption.
Having said that, it would be pretty funny to have a triple-turbo Supra. And think of the bragging rights! 
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Registered:
October 2004
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Re: 1g-gteu tri turbo ? Why not ?
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Sat, 16 October 2004 16:45
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Ok, tri turbo is just a dream...nice dream..., so if I want to the turbos reach quickly your full boost using NOS with a 25 HP kit by example, do You think that this can help the response and power for this engine ?.
Another black Supra in England has a 75HP shoot in his standard 2TT GA70. I don not know if with my mods (~14psi) already have reached this point (~270HP) or if still is safe, with the stock internal, the adding of the 25HP shoot ?
Of course, a bigger single turbo is the best choose but I do not have the money, for the moment, and there is a second hand NOS wet kit single fogger around $100 on ebay...
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1g-gteu tri turbo ? Why not ?
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Sat, 16 October 2004 22:00
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from what I have been told in the past, adding NO2 increases the speed the turbines have to spin at greatly and the faster they spin the more heat they produce. I was highly recommended not to use it with standard turbos on my 1jz-gte. Although, my turbos have ceramic rear wheels and I think 1g's have steel wheels.
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Location:
wangaratta
Registered:
May 2004
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Re: 1g-gteu tri turbo ? Why not ?
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Sun, 17 October 2004 00:55
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using N20 is kind of a band-aid approach to it.
its fine for drag cars etc, but for a street car, it seems like a poor way to go about it. add to this the cost of constantly refilling the bottle, and the added strain to the engine, it is not something that i would recommend.
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