RB20 gearbox

[Andy083]

Hi all, need some knowledge on what gearbox would fit on my S13 CA18DET ,ie RB20 would that fit if I changed over bellhousing? Or any other option on gearbox..answers greatly appreciated... Andy

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[Andy083]

Can't believe no one has given advice yet ,I've searched internet all confusing it would be easier if mods were catalogue under heading gearbox options model,engine ect.. Thanks any way...

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[pointz]

The forum is relatively quiet over the weekend and it has been less than 24hrs to be fair! SR20det gearbox fits just swap the bellhousing over.

From a quick google search

http://www.nissansilvia.com/forums/i...owtopic=484710

http://www.nissansilvia.com/forums/i...owtopic=364382

http://www.driftworks.com/forum/engi...t-fit-s13.html

[arry]

I'm near 99% certain the box is identical ex the bell housing

[CNHSS1]

As Arry says its no stronger, essejtially tye same internals as SR box. You have to step up to the RB25/Z32 boxes. They are beefier than SR/RB2O but you need maxworks bellhousing conversion or similar.

[Andy083]

Thanks guys,yeah I would like the maxworks conversion just don't have that amount of cash spare.

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[Andy083]

Well I'll have to find a CA or SR box with low miles big ask I know lol...

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[arry]

The gears themselves and the selector fork (of the CA box, the SR one is weaker) are pretty strong anyway. What tends to go is the input shaft bearing and make a whirring noise. But you can change that:
http://www.subituned.com.au/forums/i...owtopic=519917

A lower mileage box won't necessarily make it better for handling bigger power outputs

[Andy083]

Mine don't wine but when cold 1 nd 2 bit stiff,would the plastic bush on the bottom of gear stick make and difference if worn..I have a new one just got to buy circlip pliers..

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[Andy083]

Thanks Arry ,good read on input shaft summer job I think...

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[pointz]

Mine don't wine but when cold 1 nd 2 bit stiff,would the plastic bush on the bottom of gear stick make and difference if worn..I have a new one just got to buy circlip pliers..

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Yes the plastic bush can wear and cause issues selecting gears i need to replace mine and was thinking of getting a metal one as i think gktech do them!

[alanjuggler]

Yes the plastic bush can wear and cause issues selecting gears i need to replace mine and was thinking of getting a metal one as i think gktech do them!

if you want a gktech brass one, let me know, I took mine out and replaced it with a plastic one due the noise at high rpm.

might be OK with a standard shifter but with my short shift, it's a pain.