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Drivin home last night, snail went pop, emo deep inside me came out.. anyway, Im thinking of rebuilding the 3037s and putting a t3 .82 rear on it (currently running .73 t2) or should i just fork out the bigger bucks and go for a gt35r with a .63 rear? Either way ive got to buy a 6boost and f**k the t2 mani off. So whats your thorts? Its a redtop rb2.2 with tomei poncams.

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Hmmm...so many options...what kind of power are you after and how much response do you wanna lose down low? i'd lean towards a gt3076 with a 0.63 exhaust housing...or maybe a 0.82 but that might be quite large for a 2.2L...

Red top is an R31 engine isn't it ?

You can answer you rebuild question by asking yourself if you liked the performance you had before the puff of smoke .

I would be very wary of GT3582Rs on an RB20 based engine , pretty big turbine and compressor for an engine with small cylinders ie 2L based six cylinder .

If you hold high hopes of generating and using 320Kw then a turbo like that may have some value , I can't see it ...

Even GT30 based turbos are pretty healthy sized things on an RB20 (+10%) , people tell me it's the limited valve and port area in them that dictates gas flow and therefore power ceilings .

Anyhow you need to identify which 3037 you have to know what can be done with it . If it's same one as the GT3076R then you can order cartridges for them and fit whichever sized GT30 turbine housing you like in gated or non gated form .

If your 3037 has a ported comp cover try to reuse that , could save you some money .

If you can post the ID tags numbers I can identify which one it is and then its a case of seeing which parts need to be replaced if you want to go that way .

Your call , cheers A .

I dont mind the 3037, but it will still be really hard to break 400 @ the wheels with it, the gt35 on the other hand will produce more power with lower boost which id much rather have. My main concern is how laggy it will be, i dont mind abit of lag aslong as its on before 5.5kish.

Edited by Justa32

A loose water line won't cook it, thats more of an additional safety thing - so long as it had a good oil feed/drain it should have been fine.

Either way, a GT3076R will crack 400hp @ wheels fine... if you are struggling to with a 56-trim full GT3076R then its the engine moreso than the turbo which isn't flowing enough.

400rwhp with a 3076r isnt really the easiest thing to achieve with an rb20... sry but i dont agree with your post.

What you said above is not disagreeing with my post - a GT3076R is FINE for 400rwhp, and as you said above its not the easiest thing to do on an RB20. Thats not because of the RB20 + GT3076R combination, its because of the RB20 part of it. You have to spend the money to make an RB20 making >400whp, or push it that hard. GT3076Rs are making >400whp left right and centre on better motors - you could upgrade to an RB25 when you change your turbo then the 400whp will be easy >_<

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