So, I ordered a stage 1 South Bend clutch for a 6 cylinder ZF Car so I can run the E34 530i transmission... I'm running a E39 M62 flywheel... the dusk hits the flange on the flywheel and the friction material doesn't touch the flywheel face... wtf is going on here? Do I have to run a different disk? I thought the E36/E39 6cyl ZF clutches are what you have to use with the E39 flywheel?
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Originally posted by Italian_Tuneup View PostSo, I ordered a stage 1 South Bend clutch for a 6 cylinder ZF Car so I can run the E34 530i transmission... I'm running a E39 M62 flywheel... the dusk hits the flange on the flywheel and the friction material doesn't touch the flywheel face... wtf is going on here? Do I have to run a different disk? I thought the E36/E39 6cyl ZF clutches are what you have to use with the E39 flywheel?1985 325e -> M60 swap project
1983 GTV6
1974 X1/9
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Originally posted by The Dark Side of Will View PostI thought the E34 540i used a 260mm clutch. The E39 V8s went back to a 240mm clutch.
Did South Bend use the 260mm disk for their ZF performance clutch? The 320Z and 420G transmissions don't have the same input spline, do they?1985 325e -> M60 swap project
1983 GTV6
1974 X1/9
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Originally posted by Italian_Tuneup View Post
Well, so now evidently when I search, I can find the threads that say that the M62 flywheel, while the correct diameter disk, has that stupid GD lip on it, so you can't run the correct clutch. So I guess now I have to figure out whats the best option. Buy a B30 clutch and canibalize the disk, or fork out $$$ for a flywheel. The clutch I got is for a E36 non M... rated at 295 torque.... if I get the TTV flywheel, can I use that clutch, or did I waste that money too?
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Originally posted by Italian_Tuneup View Post
I don't really want a lightweight flywheel on this, my wife will drive it occasionanny too, and she'd never be able to deal with a stall-happy mill like that.
I have a Northstar Fiero, which is similar engine size, weight and gearing to a V8 E30. The stock V6 flywheel that I adapted is 14#. It was never an issue.
I'm not familiar with the "lip" you're talking about. Pics? Can you have a machine shop modify the flywheel?
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Originally posted by The Dark Side of Will View Post
Do you have a B40 engine? As long as you stick with an organic disk and have good low RPM torque (which is the whole reason for a V8 swap, right?) it'll be fine with a lightweight flywheel.
I have a Northstar Fiero, which is similar engine size, weight and gearing to a V8 E30. The stock V6 flywheel that I adapted is 14#. It was never an issue.
I'm not familiar with the "lip" you're talking about. Pics? Can you have a machine shop modify the flywheel?1985 325e -> M60 swap project
1983 GTV6
1974 X1/9
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I went through this like 8 years ago and posted about it here. I ended up going with a UUC flywheel.
Your cheapest option is probably the b30 disc. As far as I know, the organic material on the "stage 1" clutch discs from most manufacturers is basically the same material as stock. The increased torque rating comes from the clamping force of the pressure plate.
Hopefully you have better luck than I did. With a Clutchmasters stage 1 e36 328i kit, it started slipping after a few thousand miles. I switched to a Spec stage 1, but ended up swapping to 6 speed before I could put any serious miles on it.
If you go the lightweight flywheel route, make sure you tell the clutch manufacturer you want a sprung hub disc. They all make them, even if they don't have them listed on their website.
FYI, the m62 lightweight flywheels are ~18lbs... That's as heavy as an m20 single mass. It doesn't drive like a car with a lightweight flywheel at all. I can take off from a stop without touching the gas pedal. Funny story, I had to do this once on a steep hill. My throttle cable broke, and I was stopped at a traffic light in a busy intersection, of course on a hill. Light turned green, I slowly let out the clutch in first gear, and the car idled up the hill and through the intersection... slowly haha.
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Originally posted by JGood View PostI went through this like 8 years ago and posted about it here. I ended up going with a UUC flywheel.
Your cheapest option is probably the b30 disc. As far as I know, the organic material on the "stage 1" clutch discs from most manufacturers is basically the same material as stock. The increased torque rating comes from the clamping force of the pressure plate.
Hopefully you have better luck than I did. With a Clutchmasters stage 1 e36 328i kit, it started slipping after a few thousand miles. I switched to a Spec stage 1, but ended up swapping to 6 speed before I could put any serious miles on it.
If you go the lightweight flywheel route, make sure you tell the clutch manufacturer you want a sprung hub disc. They all make them, even if they don't have them listed on their website.
FYI, the m62 lightweight flywheels are ~18lbs... That's as heavy as an m20 single mass. It doesn't drive like a car with a lightweight flywheel at all. I can take off from a stop without touching the gas pedal. Funny story, I had to do this once on a steep hill. My throttle cable broke, and I was stopped at a traffic light in a busy intersection, of course on a hill. Light turned green, I slowly let out the clutch in first gear, and the car idled up the hill and through the intersection... slowly haha.1985 325e -> M60 swap project
1983 GTV6
1974 X1/9
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Update on this, South Bend sent the M60B30 clutch disk, fits like a glove and clears the B44 flywheel perfectly. M50 stage 2 pressure plate is bolted up and the trans is ready to mate. Have to finish some brake line nonsense in the engine bay and then this hog is going in.1985 325e -> M60 swap project
1983 GTV6
1974 X1/9
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