12 Valve Engine and Drivetrain Talk about the 12V engine and drivetrain here. This is for 1994-1998.5 engine and drivetrain discussion only.

Flywheel Question?

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Old Feb 16, 2008 | 06:38 PM
  #1  
dieselpwrRam's Avatar
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From: Ohio
Flywheel Question?

I'm building myself up to do a clutch job on my 12v 5 speed. The shop manual states :

"Flywheel machining is not recommended. The flywheel
clutch surface is machined to a unique contour
and machining will negate this feature. However,
minor flywheel scoring can be cleaned up by hand with
180 grit emery, or with surface grinding equipment"

My question is go ahead and have my existing flywheel resurfaced, contrary to the manual, get a new flywheel or just do as the manual recommends? By the way, anyone know what size the flywheel/crankshaft bolts are? Thanks..
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Old Feb 16, 2008 | 09:36 PM
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dozer12216's Avatar
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From: North Carolina or Kentucky. Take your pick
Many flywheels have been resurfaced with no unpleasant results. Some flywheels are cut with a very small angle. Inside is lower than outside. Perhaps 1/8 degree.
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Old Feb 16, 2008 | 09:54 PM
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Box5's Avatar
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From: Bellingham, Wa
Most clutch installation instructions say to get ur flywheel resurfaced.
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Old Feb 16, 2008 | 10:54 PM
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Fueling around's Avatar
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Get a flywheel mated to your new clutch. Check into South Bend Clutch
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Old Feb 16, 2008 | 11:48 PM
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From: Calgary, Alberta
I've machined many for these trucks. Never had a problem.
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Old Feb 17, 2008 | 03:08 AM
  #6  
MikeR's Avatar
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I get the best and smoothest results by having the flywheels machined. The clutches really prefer a perfect flat .000" surface...the factory taper is a joke.
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Old Feb 17, 2008 | 09:30 AM
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From: East Jordan, MI
yeah I replaced my clutch per the manual like u have using a DA with 180. Put it together and it slips worse than before. Take it back out get the flywheel turned and ta da.. works great. Get it machined.
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Old Feb 17, 2008 | 01:26 PM
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dieselpwrRam's Avatar
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Thanks guys for your input. I'll go with the machining.
You read these repair manuals and have to wonder if it was written for the real world.
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Old Feb 17, 2008 | 03:27 PM
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From: South Arkansas
I turned mine on a lathe and all is o.k.
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