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EFV-8 Club Forum / General Ford Discussion / Flywheel Rubbing Block

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Posted By Discussion Topic: Flywheel Rubbing Block -- page: 1 2     cliftford 02-23-2021 @ 6:56 AM reply profile send p.m. Senior Posts: 845 Joined: Jan 2014 Using a 6v starter on a 12v system will shorten the life of the starter. I've seen it break the armature shaft on a Model T. 37RAGTOPMAN 02-23-2021 @ 6:18 AM reply profile send p.m. Senior Posts: 1958 Joined: Oct 2009 if you have to pull the flywheel off and reinstall a NEW RING GEAR, you can do it with using your kitchen oven, heat it up to 350 or maybe more, put the ring gear in the oven so it gets hot all the way around, have the flywheel on a table ,[use a backing to protect the table ] pack with ice, to get it to shrink, using heavy gloves put the ring gear on the flywheel and tap it down so it seats, with a hammer, you can also use a few vise grip pliers, to install , they can be used quickly, using a torch you have to keep going around and around till it gets hot, but not cherry red, make sure it it heated uniformly , not just in a few spots, hope it works out for you, my 2 cents 37Ragtopman Mr Rogers 02-22-2021 @ 10:23 AM reply profile send p.m. New Member Posts: 106 Joined: Jul 2019 You Tube has a demo on how to install a ring gear. flywheel gear ring 1931 Flamingo 02-22-2021 @ 9:37 AM reply profile send p.m. Member Posts: 386 Joined: Nov 2019 Model A's have this problem and a fix is to "pin" the ring gear to the flywheel with short allem head screws. FWIW Paul in CT TomO 02-22-2021 @ 8:36 AM reply profile send p.m. Senior Posts: 7250 Joined: Oct 2009 This is the first time that I have heard of this. I seriously doubt that the starter caused this unless there is an underlying problem. You may have a defective ring gear or the flywheel might be slightly undersized. I do not have any specifications that you could use to check them out. Is it likely that the ring gear was not installed correctly? PM Supereal, he may have some ideas about this. Tom tpenty1 02-22-2021 @ 7:44 AM reply profile send p.m. Member Posts: 25 Joined: Dec 2009 I just posted that I had found the problem you may be interested in what happened. Thanks for your response. tpenty1 02-22-2021 @ 7:38 AM reply profile send p.m. Member Posts: 25 Joined: Dec 2009 PROBLEM FOUND! The ring gear had moved a 1/4 inch on the flywheel and cut into the block casting making the sound I was hearing. Now what caused it to move as the ring gear is sweated onto the flywheel?? I recently converted to 12 volts and replaced the starter with a 12 volt and the older style bendix because the new style would not fit in the 36 hole. Could the bendix gear be pushing to hard into the ring gear....it surely sounds like it is spinning faster than the 6 volt. We had to reheat the ring gear to get it back on right. My engine is a 59 A/B 46 to 48. I am thinking if there was any wear it would be on the flywheel so mounting another ring gear may not be the solution. ANY IDEAS? carcrazy 02-19-2021 @ 10:55 PM reply profile send p.m. Senior Posts: 1651 Joined: Oct 2009 Your crankshaft end play may be too large. The end play amount is limited by the thrust surfaces of the rear main bearing insert. The end play should be between .002" and .006" with a wear limit of .008". You can measure the end play by prying back and forth on the front crankshaft pulley with a crowbar. If the amount of endplay is too great, you could have the flywheel rub the rear of the engine block. 40cpe 02-19-2021 @ 3:09 PM reply profile send p.m. Member Posts: 472 Joined: Jan 2010 My understanding is that a shoulder on the center main bearing limits crankshaft fore/aft movement. If there is a noise now, maybe it is broken. 37RAGTOPMAN 02-19-2021 @ 8:27 AM reply profile send p.m. Senior Posts: 1958 Joined: Oct 2009 this is a long shot, throw out bearing seems like this could be the problem logically I have seen loose ring gears, but maybe a broken off starter bolt? or something else, it is very unlikely that the crank is moving forward, if it is you need to check this out ASAP before running the engine, I had this noise problem in a MODEL A, to repair this , I removed the starter and packed the flywheel with wheel bearing grease and turned the engine over with a hand crank slowly and the broken piece got stuck in the grease, so I wiped off the excess grease off and it was fixed, my 2 cents 37 Ragtopman, Maine

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