18G a small turbo?

1706 Views 5 Replies 6 Participants Last post by TrboH22, Mar 9, 2002

kbrunjes

Discussion Starter · Mar 7, 2002

I see everyone talking about the greddy turbo kits as being fine only for smaller applications, and I am not sure why. Leaving aside things like not coming with an intercooler, or a blow-off valve. I am just talking about potential here. Is there something else holding it back, like the manifold? I hear that an 18G turbo can produce almost 30psi of boost all the way up to redline; well DSM redlines (7000 RPMs). I have heard about DSMs running 11s using 18G turbos producing around 400hp.

I realize that I am bringing up DSMs a great deal, but the 18G is a Mitsubishi turbo and it’s used pretty commonly on DSMs. I don’t expect an Integra in street trim to run 11s, but an 18G should have close to the same potential as a t3/t4. Anyway, the turbo can’t be a limiting factor in the Greddy kit. What is?

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MileHiGSR

· #2 · Mar 7, 2002

kbrunjes said:
I see everyone talking about the greddy turbo kits as being fine only for smaller applications, and I am not sure why. Leaving aside things like not coming with an intercooler, or a blow-off valve. I am just talking about potential here. Is there something else holding it back, like the manifold? I hear that an 18G turbo can produce almost 30psi of boost all the way up to redline; well DSM redlines (7000 RPMs). I have heard about DSMs running 11s using 18G turbos producing around 400hp.

I realize that I am bringing up DSMs a great deal, but the 18G is a Mitsubishi turbo and it’s used pretty commonly on DSMs. I don’t expect an Integra in street trim to run 11s, but an 18G should have close to the same potential as a t3/t4. Anyway, the turbo can’t be a limiting factor in the Greddy kit. What is?

I don't think most of the posts are strictly saying the turbo is 'too small'. From what I hear, you can run 300-350 whp off that turbo by cranking up the boost but that's where it maxes out. It's just that with the amount you would have to invest (engine buildup, fuel management, etc) to get that performance from that turbo, could just as easily be invested into a larger turbo and more power gotten from it (I've seen a dyno of a 500+ whp Integra with the RevHard Stage II that was street legal). Bottom line is, the potential is great, but a larger turbo could always end up making more power. Just my $.02. Thanks.

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SoFlaGS-T

· #3 · Mar 7, 2002

the size of the engine, the potential of it, the lack of intercooler, the restricting fuel system, the lack of the BOV... these are all factors in the faults of the system.... also, SOHC...

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IdLeSnAkE

· #4 · Mar 8, 2002

Greedy is a good kit and affordable, when building up a motor you need to spend money either way. If you get the rev hard kit and make 300+ HP you better build that motor to handle all that power. That beind said those cars making that much power is not running on a stock block, internals etc... Just make sure you build your motor first before even thinking about making all that power. If your motor can't handle it then no point in blowing it up and spending more money.

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BoostinGSR

· #5 · Mar 9, 2002

DRAG 3 :laughy:

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TrboH22

· #6 · Mar 9, 2002

BoostinGSR said:
DRAG 3 :laughy:

CUSTOM

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