How much clearance?

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michaelb2296
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How much clearance?

Post by michaelb2296 » Wed Jun 19, 2024 7:00 pm

How much clearance should there be between the rod cap and the crankshaft lobe? Skat crank has tight tolerances!!! Old cranks dont have this issue… lots of slop between journal lobes.
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Kerry
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Re: How much clearance?

Post by Kerry » Wed Jun 19, 2024 7:16 pm

Ford specs are the crank is 1.505" and rod is 1.5" wide.


Topic author
michaelb2296
Posts: 205
Joined: Tue Sep 13, 2022 4:01 pm
First Name: Michael
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Location: Cary, NC
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Re: How much clearance?

Post by michaelb2296 » Wed Jun 19, 2024 7:21 pm

How do i sand .0025 off each end? Ford used a big damn file on the caps!
Last edited by michaelb2296 on Wed Jun 19, 2024 7:26 pm, edited 1 time in total.


Kerry
Posts: 1447
Joined: Mon Jan 07, 2019 2:42 pm
First Name: Frank
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Re: How much clearance?

Post by Kerry » Wed Jun 19, 2024 7:24 pm

Is the rod turning or binding?


Topic author
michaelb2296
Posts: 205
Joined: Tue Sep 13, 2022 4:01 pm
First Name: Michael
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Location: Cary, NC
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Re: How much clearance?

Post by michaelb2296 » Wed Jun 19, 2024 7:27 pm

Nope! New babbit. Not turning… super tight but does fit around the journal


Kerry
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First Name: Frank
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Re: How much clearance?

Post by Kerry » Wed Jun 19, 2024 7:58 pm

OK, usually it is the fillet cut that is tight, not cut deep enough to clear the fillet on the edge of the crank journal, but if you think it is too wide then rub the rod on a flat piece of glass with a sheet of about 320 sand paper. Run the rod bearing in with time saver.


Joe Bell
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Re: How much clearance?

Post by Joe Bell » Wed Jun 19, 2024 8:32 pm

I would rather have a large radius than a small one, less chance of breakage.

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JTT3
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Re: How much clearance?

Post by JTT3 » Wed Jun 19, 2024 9:28 pm

Amen Joe. As stated time saver will be your friend in fitting the rods on the journal, yellow 60 grit

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