 Crank end play |
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| jmargush |
 Aug 19 2013, 06:08 PM
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#1
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Member  Group: Members Posts: 460 Joined: 8-June 04 From: Goshen, IN Member No.: 2,176  |
I am at the point of checking end play on the Crank.
When I first put the case together there was plenty of end play. Now there is not very much. Is this normal as pistons and cylinders are added things tighten up? when I push the flywheel in I set the dial indicator to 0 and then grab the fly wheel and pull it back. I get a .006" while pulling but when I let go it settles at.005". What is the correct measuring point under pressure or relaxed? Should the flywheel just be pulled by hand or pried lightly with screw driver? |
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Replies(1 - 7)
| r_towle |
Aug 19 2013, 06:21 PM
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#2
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Custom Member Group: Members Posts: 24,588 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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Hit with a RUBBER mallet on the other end.
Read it at the max movement, use three shims, no more, no less to make it work. |
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| mrbubblehead |
Aug 19 2013, 07:10 PM
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#3
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Twodollardoug Group: Members Posts: 1,155 Joined: 17-December 10 From: calimesa ca. Member No.: 12,492 Region Association: Southern California |
relaxed. .004 is the middle of the spec. do you have access to an assortment of shims?
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| r_towle |
Aug 19 2013, 07:15 PM
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#4
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Custom Member Group: Members Posts: 24,588 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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The crank shaft under load will move the maximum amoun that it can move.
You need to know how much it will move prior to putting shims in place. 003 is the goal. You setup the dial indicator tap the flywheel towards the center of the engine with a rubber mallet, then zero out the gauge. Hit the crank from the other side, fan end, to see how far it moves. Use three shims to get the overall movement to 003 If you use more or less than three, they will get damaged. Rich |
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| jmargush |
Aug 19 2013, 07:23 PM
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#5
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Member Group: Members Posts: 460 Joined: 8-June 04 From: Goshen, IN Member No.: 2,176 |
I don't have a great assortment of shims. just what was in the engines I have which all seem to bee .011 - .014 and I seem to need thinner shims as I am close to .006 with one shim.
I will try the mallet method and Hopefully my FLAPS can get shims pretty quickly. I would like to run the car on Sunday. |
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| r_towle |
Aug 19 2013, 07:30 PM
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#6
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Custom Member Group: Members Posts: 24,588 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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Shims are to be found at specialty parts shops for our cars, a flaps store won't have them.
The measurement is pretty important and makes the difference between a long life motor and a one day motor. Take the time to do it right. 914 limited in Peoria Illinois will have everything you need. Rich |
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| jmargush |
Aug 19 2013, 07:32 PM
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#7
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Member Group: Members Posts: 460 Joined: 8-June 04 From: Goshen, IN Member No.: 2,176 |
Awesome
Brad isn't too far form me maybe he can ship them to me priority. Thanks |
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| jmargush |
Aug 20 2013, 04:45 AM
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#8
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Member Group: Members Posts: 460 Joined: 8-June 04 From: Goshen, IN Member No.: 2,176 |
anyone know what size shims come in?
I measured last night with no shims and I get .023" end play. So .023 - .004=.019"/3 =.0063" Do they make shims that thin? Is it a concern that there is so little movement without any shims? |
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