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Tiff's R32 Gtst Conversion To R32 Gts25t

Squishy

By Squishy,
in Engines & Forced Induction

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Squishy Experienced

Squishy

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My R32 drifter project has started.. :(

0004874zt2.jpg

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spa0503rh2.jpg

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Here is my RB25DE that we picked up yesterday.. it ended up being out of a r33 not a r32 like we thought..

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Bridgestone Potenza front coil overs and springs.. & JIC rears...

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New upper and lower nismo control arms..

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Coilovers & upper control arms intalled..

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Lower control arms installed..

I will keep this thread up to date with he conversion.

:laugh: I'm SO excited!!!

Edited by RB_turbo_bitch
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Squishy Experienced

Squishy

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so your going to turbo the NA motor?

Yes that's right!

hmmm 33 na 25 is going to make things a little harder yes?

Yes correct... i was actually wanting to get the non vvt rb25 but this is the one we ended up with...

Squishy Experienced

Squishy

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I didn't even know Bridgestone made coilovers

Are you going to leave the motor as a high comp. NA when you turbo it?

I didn't know they made them either!

We are putting a 2.4mm head gasket to lower the compresion down quite a bit.

andylaurel Community Regular

andylaurel

Posted
Posted

hey matey

im doing exactly the same conversion...

right now actually.

i've got my 25DE sump at the engineers getting the 20DET oil drain welded into it.

Other than that, im gonna rock the 10:1 CR and the 260 cc injectors with the stock RB20 ECU, stock turbo and manifold and im gonna use a 1980's apex AFC to richen things up a bit.

by they way, im gonna be running natural boost and aiming for around 160 kw at the wheels

Squishy Experienced

Squishy

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hey matey

im doing exactly the same conversion...

right now actually.

i've got my 25DE sump at the engineers getting the 20DET oil drain welded into it.

Other than that, im gonna rock the 10:1 CR and the 260 cc injectors with the stock RB20 ECU, stock turbo and manifold and im gonna use a 1980's apex AFC to richen things up a bit.

by they way, im gonna be running natural boost and aiming for around 160 kw at the wheels

That sounds interesting andy! Can i ask why you aren't using a thicker head gasket to lower the compression? I was told that is the first mistake most people make when doing this conversion.

I have a Blitz access computer going on mine and some GTR injectors..

I am using the RB20 manifold and bits of my old engine..

and an RB25 Neo turbo (for now that is) :happy:

Edited by RB_turbo_bitch
Cubes Grand Master

Cubes

Posted
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andy,

ermm... whats natural boost? :happy:

You mean standard boost, i.e no aftermarket boost control apart from the std actuator?

and yes lowering the compression via the thick headgasket works but it does increase fuel consumption and makes the motor detonate easier.

With regards to the rocker covers thing.. My R32 RB25DE (nonvct) looks identical to my RB20DET. The only way you can tell it apart is by looking at the size of the valves, combustion chamber and ports. So once its bolted on you can't tell the difference between the rb20 and rb25.

mad082 Grand Master

mad082

Posted
Posted
hey matey

im doing exactly the same conversion...

right now actually.

i've got my 25DE sump at the engineers getting the 20DET oil drain welded into it.

Other than that, im gonna rock the 10:1 CR and the 260 cc injectors with the stock RB20 ECU, stock turbo and manifold and im gonna use a 1980's apex AFC to richen things up a bit.

by they way, im gonna be running natural boost and aiming for around 160 kw at the wheels

so are you using the stock rb20, or rb25 turbo? if its the rb20 i think you would be better off with the 25 turbo, as it isn't going to be as close to maxing out... unless you don't plan reving over 5000rpm.

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