swaping the guts

[Guest500]

i was wondering if i could change the guts on two of the trannys that i have. seeing as the main shaft bearing (maybe it's the input shaft bearing)is making a not-so-pleasant noise in my si tranny, and my 4 speed manual tranny is in primo shape, would this be a worthwhile move? if not, i guess i can sacrifice my zc trans.

[rkcarguySI]

Hi, tried this, it doesn't work. The 1st and 2nd gear are higher in the 4sp tranny, and the linkage is different too. Get a DX trans your final drive will bolt right in. The gears are all the same except the final is 3.88 where the final SI is 4.25.

[Kwicko]

If you're willing to sacrifice the ZC tranny, just put the Si final drive and differential in it. Oh yeah - use the Si fifth gear as well. That will give you a nice, close-ratio gearbox on the first-through-fourth gears, a decent highway cruise (same as your current Si), and you'll get to use stock Si axles with it.

I'm *assuming* this is for an L3 tranny, which is what I'm basing the advice on. I'm running a hybrid tranny in my '91 CRX DX right now, and I *love* it. I'm using ZC 1-4, HF 5th, and Si final and diff. The acceleration is much better than a stock Si transmission, and the highway cruise is the same as my old DX - about 3600rpm @ 80mph in 5th gear.

Build it all into the Si case so you don't have to mess with the bigger opening on the ZC case for the intermediate shaft...

Mike