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Gts-4 Engine/gearbox Conversion

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20SIX Community Regular

20SIX

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Posted

Hey guys, I've just got myself an r32 gts-4)(T), and its automatic.

Got a few questions, as I'm deciding which path to go down atm.

Basically I'm contemplating freshening up a rb25det and dropping it in. (The rb25 was out of a gts4 r33, so has the right block for the drivetrain)

Now I'm thinking I should probably convert to manual, as even if wanted to stay auto, the box Prob wouldn't be too happy? ( not that I'd be putting much power through the 25 anyway)

My thoughts were if I do go to manual, I'd be looking at running at stagea box from 25det.

Wondering if this will be a straight drop in bolt up with the 25 and the gts4 shafts etc. and is it like a gtr box where needs the computer to run 4wd or not?

Also just so I'm aware of what it will involve, what's exactly is involved in the manual conversion..

Assuming just need some different gear surrounds, and the clutch line and master with the box. And of course the pedals. Am I missing anything, and how much stuffing around is the pedal part?

Thanks guys

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blind_elk Grand Master

blind_elk

Posted
Posted

First up, the RB25 from a 33 GTS4 is N/A - Nissan didn't ever install a turbo engine. Probably because a RB25DET is closer in power to the RB26 than the RB20DET is.

Second - the vast majority of Stageas are autos; manuals are few and far between.

I have swapped the RB25DET from a Stagea into my R32 GTS4 (manual), which runs up to 180 awKw, and the original RB20 gearbox is still fine.

So if you want to go RB25DET + manual, I would suggest a Stagea engine and R32 GTS4 manual gearbox.

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

If you go to the DIY section in the Stagea forum you will find a manual conversion guide most of which should apply. Manual Stagea gearboxes are very rare - I have a GTR box from an R33GTR in mine. The Atessa computer is separate so should be no problem .

20SIX Community Regular

20SIX

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Posted

Ok thanks for your replies.

I'm aware the 33's were only n/a, and the one I have, needs bottom end build anyway so that's not an issue.

As for the gearbox, I possibly have access to a manual stagea box, so that's why I'm asking the question.

Also if I drop the 25 in using the auto box in the end, (running mostly standard 25 power) should I expect it to hold up in your opinions?

Thanks guys, I will also have a look through conversion guide you mentioned

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