I've got a problem with my '04 Cavalier's transaxle, pretty sure it's the synchros (it's fine if I double clutch). Whatever it is, I'm going to buy a salvaged unit and rebuild it. That way I can use a hoist at work over the weekend and be sure that I can swap them and be all done in the time I have. My question is, what are the differences between the F23 M86 and the F23 MG3? I know the MG3 used in the Saturn Vue is rated for about 400 lbs more GVWR (and presumably can handle a bit more torque), but is it even worth upgrading? I've got a supercharger on my car now, and plan on adding more power once I upgrade to forged internals, so there is a need for more strength wherever I can get it. I researched a bit on Wikipedia, and it says the Getrag F23 is rated at 155 ft-lbs torque!? That's barely above the stock Ecotec, is that number right? If it is worth upgrading, are they interchangeable with no modification? I live 15 miles from work, and can't be without my car while I'm trying to fabricate something, so I really do need it to be nearly identical.
Also, I'm an automotive technician by trade, but have absolutely no experience with rebuilding any kind of transmission. I've read quite a bit about the rebuild, and most people say it's fairly easy. I know nobody can answer this with any degree of accuracy, but given my above average mechanical ability, should I be able to do it without too much difficulty?
While I've got the transaxle out, I'm going to install some sort of performance clutch, but since I drive this car every day, I need one that isn't too grabby. Any first hand experience with "easy to drive" performance clutches? Is there really any reason to switch to a lightweight flywheel like so many manufacturers recommend?
Thanks,
Jason
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'04 Cavalier
2.2 Ecotec Supercharged w/ 2.9" pulley
Charge air cooler
Poly bushings - lower control arm and engine/trans
I am a tech by trade as well and rebuilt 2 or 3 manual trans in school ( never dyno'ed them so not sure if they worked afterword lol was only given 1 day for manual trans vs the 9 weeks for auto trans) It was not that hard but keeping the gears lined but while I drooped the case back on was frustrating. Get the trans specific manual, read, take your time and keep your cool it should not be that hard. You can prob talk to a tranny shop and they can help you find the manual for the trans.
Build it, Beat the wee out of it, brake it so you have a reason to put more one into it =P
I ran 108 in the 1/4 with the stock speed limiter....
my s/c 2.2 getrag ate the spider gear thats on the pin 160.00 cost looking to but a Quaife lsd but 900.00
