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By Rono - 13 Years Ago
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Hi Guys; Just picked up my flywheel from the machine shop and while they were able to "clean-up" the clutch surface, I only have about 0.175" thickness above the ring gear. Is there a ball park figure for a minimum thickness here? Also, I had the ring gear flipped while it was at the shop, but as you can see in the picture, it is so badly pitted, the starter gear may miss a tooth or two if it stops on a bad spot. AND THIS WAS THE BETTER SIDE  Rono
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By paul2748 - 13 Years Ago
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As far as I know, new ring gears are available. Mac's list them in their catalog. Can't help you on the thickness issue.
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By 46yblock - 13 Years Ago
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I would definitely get a new ring gear. Free junk isnt free when shipping is $35.oo.
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By rick55 - 13 Years Ago
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If when you had the ring gear flipped, the fitted rotated it 45degrees you would have been OK.
The crank only stps in the same 4 spots when it stops. If you are missing teeth it probably needs replacing.
Regards
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By Hoosier Hurricane - 13 Years Ago
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Rono: You will have to make sure the springs in the center of the clutch disc do not hit the heads of the flywheel attaching bolts in the recessed area.
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By Rono - 13 Years Ago
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Thanks Guys; Mac's does have new ring gears so that's good! John, I never thought about the clutch spring clearance issue. I was more concerned about heat build-up and warpage if the flywheel was thinned too much.
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By Hoosier Hurricane - 13 Years Ago
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Rono: I had a flywheel that was lightened by machining material off the side facing the engine, about 3/8" as I remember. Used it in my drag '56 T-Bird, no heat or warp problems. You shouldn't have any problem with the one you have that is only resurfaced.
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By lyonroad - 13 Years Ago
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Rono, my shop manual says that the maximum that should be removed from stock when resurfacing a Flywheel is 0.045". They don't say what the stock thickness is, so if your flywheel has been or could have been resurfaced before this is not very helpful. If someone knows the specs for a stock flywheel we could mark this down in our shop manuals. I've got two flywheels that I need to get resurfaced so this would be good to know.
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By Rono - 13 Years Ago
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Mark; That's really good information! I'm just guessing here, but if I measure the backside of the flywheel from the surface of the ring gear, the thickness is about 0.250". Could it be that when they machined these flywheels they had 1/4" of thickness in front of and in back of the ring gear? Sounds logical to me, but what do I know. If that is the case, then the flywheel I have has been surfaced about 0.075" since I only have 0.175" of thickness in front of the ring gear now. Rono
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By paul2748 - 13 Years Ago
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I have a flywheel without a ring gear you can have for shippingcost. Its not an 11 inch but unsure how to measure to see what it is.
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