e30 driveshaft compatibility

[theroundcow]

i have a 89' 325i coupe just put a new m20 in it and now my driveshaft u joints and CSB are giving me the ever apparent clunking underneath my e brake.

But i dont have the money for a rebuilt shaft, however i do have the driveshaft out of my old 91' 318is, but thats a m42....but somewhere i thought i maybe read it works if it has the later transmission?

please halp!

[jlevie]

Look up the prt numbers on realoem.com and see if they are the same.

[SpecM]

I'm pretty sure the 325i and 318i driveshafts are different

not 100% tho

[shiboujin]

M42 drive shaft is longer than an M20 one.

[theroundcow]

damnnn, i feel like i heard somewhere that the later m20s and m42s driveshafts were interchangeable

[shiboujin]

When you find out where, slap them.

[MR 325]

Definitely totally different.

If your CSB is bad you can buy a new one for like $30.

[theroundcow]

word thanks for the help i think im just ordering a new driveshaft.

[shiboujin]

ballin. Wish I could do that... I'm cheap.