Gear box replacement?

[Michael15200]

Needing a new gearbox for my 87 vr4, I currently have a c50ph box that's worn out, here in NZ there's heaps of w5m33s and c51ph's lying around, are these or any others direct replacements for the c50ph's?

 

[thomcasey]

a w5m33 transmission should work as long as the spline/tooth count for your transfer-case is 22 spline. LINK

 

[transparentdsm]

Get a matching t-case from whoever you get the trans from

 

[Michael15200]

So for the record, the ratios are the same between the two boxes but the splines are potentially different?

 

[fuel]

C50ph = early KM225 3.545 ratio
C51ph = later KM225 3.545 ratio
W5M33 = can come in many variants from early style with same shifter cable mounting as KM225 and 3.545 ratio through to Evo III box with 3.909 ratio. You need to make sure the W5M33 is 3.545 ratio and you may need to swap to facelift 90+ shifter cables.

Otherwise if you find a C51 box you can use in place of your C50 box.

 

[Michael15200]

Okay sweet at thanks mate, I can get a hold of a c51ph, so I might go with that