Starter shims
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Le Mans Master
Joined: Oct 2007
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From: Richmond Kentucky
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Starter shims
How many is too many????????????????
I replaced the L-88 flywheel on my ZL-1 engine with a stock 327 flywheel in order to make it more drivable. Now the starter drive doesn't want to mesh properly. NOTHING else was changed. Starter is a Powermaster. I have added .140 total thickness of shims........then removed ALL shims...................all to no avail.
Any suggestions?
Thanks,
Rex
I replaced the L-88 flywheel on my ZL-1 engine with a stock 327 flywheel in order to make it more drivable. Now the starter drive doesn't want to mesh properly. NOTHING else was changed. Starter is a Powermaster. I have added .140 total thickness of shims........then removed ALL shims...................all to no avail.
Any suggestions?
Thanks,
Rex
Race Director
Joined: May 2006
Posts: 18,756
Likes: 2,589
is the tooth count and diameter of the flywheels the same? How do you go from a BB flywheel to a SB flywheel? Did you check the clearance between the pinion gear tooth point and the flywheel tooth valley, should be able to fit a paper clip in there.
Thread Starter
Le Mans Master
Joined: Oct 2007
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From: Richmond Kentucky
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The L-88 flywheel IS the SAME diameter as the 327 stock flywheels, they use the same type of starter.
Thread Starter
Le Mans Master
Joined: Oct 2007
Posts: 6,014
Likes: 1,761
From: Richmond Kentucky
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I'm beginning to think that there is something within the bellhousing that is binding and not allowing the engine to turn. Only items changed were flywheel, a stock 153 tooth, new Sachs clutch disc and diaphragm pressure plate.
Will pull trans and bell tomorrow.........................
Looking forward to it!!!!!!!
Will pull trans and bell tomorrow.........................
Looking forward to it!!!!!!!
Melting Slicks
Joined: Oct 2008
Posts: 2,154
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From: Regina Sk Canada
Get under the car, and pry the bendix, or starter gear back with a screw driver, and mesh it with the flywheel. use a paperclip as distance between where the teeth mesh. Add shimms accordingly. i did this on my 468 with an MSD starter took an hour . its a pain in the ***, but there is no magic number. each situation is different.
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Le Mans Master
Joined: Oct 2007
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From: Richmond Kentucky
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The problem is that I used an early flywheel (62-67 type, casting # 3791021), which is too thick and thus rubbed againts the cam tunnel plate on the back of the ZL-1 block. I need the later design, thinner flywheel. I'm not sure when GM changed flywheel designs and went with the thinner one, I'm thinking around 1968 or 69.
Anybody got one?
Anybody got one?
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Safety Car
Joined: Mar 2007
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From: Bridgewater nj
The problem is that I used an early flywheel (62-67 type, casting # 3791021), which is too thick and thus rubbed againts the cam tunnel plate on the back of the ZL-1 block. I need the later design, thinner flywheel. I'm not sure when GM changed flywheel designs and went with the thinner one, I'm thinking around 1968 or 69.
Anybody got one?
Anybody got one?
Melting Slicks
Joined: Aug 2008
Posts: 2,200
Likes: 3
From: Lehigh county Pennsylvania
Especially since the BB is externally weighted and the SB is internally weighted.
