We were all ready to put the transmission back together when we had a scary realization: the LSD isn't going to fit. After doing a little research we discovered that the S80/Y80 transmissions had slightly different guts depending on whether they were bolted to a B18B (non-vtec) or a B18C (vtec). The B18C transmissions got a different final drive gear, pinion shaft and different bearings. The final drive gear is on a different bolt pattern than the B18B version, so we can't swap our final drive gear onto the B18C LSD.
We were basically left with three choices:
1) Put it all back together with the old diff and give up on our dream of LSD.
2) Buy a final drive gear and pinion shaft (~$800) and turn our transmission into a B18C version.
3) Get an OBX LSD (~$350) for the B18B and sell our B18C OEM LSD.
#1 is unacceptable after all this effort. #2 blows our budget. That leaves #3. We heard enough scary stuff about the OBX during our research that we went with the used OEM unit in the first place, but now it's looking like the only option.
Friday, January 22, 2010
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