Con rod side clearance.

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Model T Ford Forum: Forum 2012: Con rod side clearance.
Top of pagePrevious messageNext messageBottom of page Link to this message  By Anthony Bennett on Saturday, April 21, 2012 - 05:02 am:

G'day blokes,

I'm just putting the engine together for the roadster and have struck a minor problem. I had the 'old' bearings bored from •010“ back out to standard to accommodate a new Scat crank. I have sorted the end float by facing the main cap in the lathe and a dose of timesaver is proving very helpful in freeing things up otherwise, however the rods are also too wide. I know it's not as critical as some engine tolerances but what sort of clearance would you run?

Cheers

Anthony


Top of pagePrevious messageNext messageBottom of page Link to this message  By David Dare - Victoria Australia on Saturday, April 21, 2012 - 06:07 am:

The clearance on a standard cam is pretty darn close too.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kerry van Ekeren (Australia) on Saturday, April 21, 2012 - 06:57 am:

Some one had posted on this not so long ago and the answer was max 18thou, but I've never found any specs in writing, my repco digest on engine rebuilding covers every thing you can think of but no mention of the side clearance on dip feed poured bearing rods, also go's for any on Ford rebuild books I have.
I set mine at a few thou but any over I don't stress out about.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kohnke Rebabbitting on Saturday, April 21, 2012 - 03:36 pm:

Ford Factory rods are 1.500 wide. .005 thousandths is about right for side play, make sure they are checked for twist, bend, and off set.

Never over .010, side play, as it gets harder on the flanges, or the thrust, and you have way more Rod movement then needed, or desired. Herm.


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