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bbrock |
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914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains ![]() ![]() |
I think I already know the answer to this, but before I ruin an unused seal, I thought I'd get a ruling from the judges about whether you can get a good end play reading with the seal in place.
Thirty years ago I rebuilt the bottom end on my 2L engine and checked the end play with a feeler gauge. Then the project was put into deep sleep for decades before I finished the rebuild. Now I'm finally doing it and would like to recheck my work with a dial indicator just to be sure. So I set up my indicator on the flywheel and pulled the flywheel away from the case followed by a few very gentle taps on the impeller end of the crank shaft with a plastic mallet until it stopped moving. Zero the gauge and then squeeze the flywheel into the case with my hands. When I squeeze hard, the gauge reads about .0035" and when I let go, it moves back to about .002". I'm assuming the spring back is the seal pushing the crank back out a little. Would it be stupid to think I'm okay here? I actually have a spare NOS seal I bought back when I started the rebuild. All I can find stamped on it is the size and FPM/ACM which I believe tells the inner and outer rubber material. TIA |
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BeatNavy |
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Certified Professional Scapegoat ![]() ![]() ![]() ![]() Group: Members Posts: 2,926 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region ![]() ![]() |
FWIW, I was recently checking flywheel endplay on my rebuild, without a seal, a month or two ago and saw similar results: end play at around .04 and would "spring" back to like .02 when I removed pressure.
So, I'm also interested in hearing what the sages have to say. |
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