Check end play with flywheel seal in? |
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Check end play with flywheel seal in? |
bbrock |
Apr 1 2019, 03:59 PM
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#1
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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 |
rvanderpyl |
Apr 1 2019, 04:10 PM
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#2
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Newbie Group: Members Posts: 9 Joined: 28-July 12 From: Priddis Alberta Member No.: 14,726 Region Association: Canada |
I hate to say it, but a seal that has been sitting dry for thirty years is probably just going to split and leak as soon as you start running the car. You might as well replace it and do so with a new one.
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