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06-23-2016, 06:32 AM | #1 |
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Join Date: May 2010
Location: Northeast Penna
Posts: 2,108
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Correct fillet radius for Model A crank journals ?
I seem to remember reading / hearing that when having a Model A crank re-ground, it is essential to maintain Ford's original spec for the fillet-radius on the rod and main bearing journals.
Can someone provide that specification ? ( I can't seem to find it... ) Thanks ! Frank |
06-23-2016, 06:58 AM | #2 |
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Join Date: May 2010
Location: on the Littlefield
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Re: Correct fillet radius for Model A crank journals ?
from the print---5/64 -- 1/8
stroke and index within .005 the flywheel pilot(rim of flywheel flange) and timing gear shoulder must not runout more than .001, face of flywheel flange less than .0005 within .00025 round, .0005 taper |
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06-23-2016, 07:18 AM | #3 | |
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Location: NC
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Re: Correct fillet radius for Model A crank journals ?
Quote:
In the old days when we ground cranks in my Dads garage we had wheels with differnt radius on them, we just changed wheels. I could not find any one in our area than wanted to do it right, so I set up the portable grinder we had in my Dads garage to grind rod journals in the car. I put the crank in my engine lathe and used the portable grinder. Last edited by George Miller; 06-23-2016 at 01:13 PM. |
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06-23-2016, 12:17 PM | #4 | |
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Join Date: May 2010
Location: South California
Posts: 6,188
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Re: Correct fillet radius for Model A crank journals ?
Quote:
The machinist who put the 'correct' radii on my C crank, said the same words that George has warned about. Remedy was expensive, IMO, but how much is your peace of mind worth I had him prepare a 'stone' with the proper radius to do it 'right'. |
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06-23-2016, 11:26 PM | #5 |
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Re: Correct fillet radius for Model A crank journals ?
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