Join Date: Nov 2001
Location: North Central Illinois
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Re: Don\'t Do It!
First off, unless it's a very expensive lathe cutter, they are not going to give the level of accuracy in resurfacing a flywheel that a grinding unit can. These flywheels are a step type, and to get an accurate grind the pins and ring gear for most machines have to be removed. The pins location isn't that important, but the ring gear's orientation is. I mark mine with a punch, then heat it slowly to expand it off the flywheel, then it just drops off. The step difference has to be cut to .095", or the clutch will not work properly. The ring gear that was on this last flywheel we used was tore up on one side, so it was reversed. However, that was before the rotating mass was balanced for the new engine, so the flywheel was rebalanced as it was assembled. When we did this, the flywheel came back with some huge holes drilled into it, mostly due to the ring gear being flipped! The cause of the whole problem started with a cheap pos starter from Auto Zone. They did warranty it, but it cost me almost $75 in extra machine work. After all that, as soon as we tried to fire the engine, the starter ground again. I took it back, they tested it and said it was fine. After a few threats of bodily injury, they gave me another different one, which works just fine, never once has it ground the teeth. A serious lesson: don't trust cheap aftermarket starters...
If it aint broke , I can still fix it...