RB25 'box into S13?

[Cool Hand Luke]

After thinking it would be a good idea to boot it coming onto the highway yesterday and my gearbox destroyed itself in a big way, im deciding on which box to choose from. Obviously the 25 box is much stronger and larger, but will it still fit in the standard tunnell of an S13? Anyone who has a whining RB20 gearbox, pay attention to what its trying to say! I think the new clutch didnt make it too happy either.... The box is that bad that you cant even let the clutch out in neutral. Also what would be ballpark figure for the 2 boxes?

[sn00p]

I have an rb25 box in my s13 (with rb25det)and it fits in the tunnel except you will need customgearbox mount and possibly modified tailshaft.

[Mase]

I didn't think u will need a modified tailshaft as all the boxes tend to fit fine but i may be wrong.

[S13 Silvia]

Yeah if you are going from rb20 box to rb25 I'm pretty sure you don't need to modify tailshaft. It's only if you go from auto ca18 or auto sr20 to manual rb.

[2rismo]

Turning the standard mount around may help a bit. Just keep it in mind.

Adrian

[Clint32]

No you need a new tailshaft even from the rb20 box as the yoke is diff in the 33 box. Also the std gearbox mount cant be turned around as its height is different on each side. The gearbox mount is easy and anyone could make in 30mins with the right tools.

[dabigbolf]

heres my one. pretty solid.

[dkonig]

I have seen people having to hammer out the transmission tunnel slightly to make it fit

[dabigbolf]

it is a very close fit.

[sn00p]

yeh fits for me all sweet. Just a bit of work to get it in connected to motor