The Ford Barn

MikeK · 05-23-2015, 01:44 PM

If you are doing this with the engine in place did you use a jack to exert upward pressure at each individual bearing when taking your plastigauge measurements? That crank can flex a few thou and give some strange readings if you do not forcibly push it up against the block babbitt while measuring from 'down under'.

My1930ModelA · 05-23-2015, 08:22 PM

Mike, that makes perfect sense, an no, I didn't do this or even think of this when I adjusted mine. Would have been easy to do too as I have a 2 post lift and tripod in my shop. Thanks for the tip! This is my first Model A.

Mark

norcalal · 05-29-2015, 11:15 PM

I put back some shims after the crankshaft seemed to turn too tight. Was a bit nervous, but ran the engine at a fast idle for 30 minutes, and think I'll be OK. Any thoughts? Thanks for your replies!

Mike V. Florida · 05-30-2015, 12:56 AM

I use the aluminum foil method.

05-23-2015, 01:44 PM	#21
MikeK Senior Member Join Date: May 2010 Location: Windy City Posts: 2,890	Re: shimming engine bearings If you are doing this with the engine in place did you use a jack to exert upward pressure at each individual bearing when taking your plastigauge measurements? That crank can flex a few thou and give some strange readings if you do not forcibly push it up against the block babbitt while measuring from 'down under'. __________________ Mechanical engineering 101: If you put an adjustment knob, screw, bolt, or tolerance specs on something, some people will immediately fiddle with it. If you mark it DO NOT TOUCH everyone will mess with it.

05-23-2015, 08:22 PM	#22
My1930ModelA Member Join Date: Feb 2015 Location: New Philadelphia, Ohio Posts: 32	Re: shimming engine bearings Mike, that makes perfect sense, an no, I didn't do this or even think of this when I adjusted mine. Would have been easy to do too as I have a 2 post lift and tripod in my shop. Thanks for the tip! This is my first Model A. Mark

05-29-2015, 11:15 PM	#23
norcalal Member Join Date: May 2010 Posts: 59	Re: shimming engine bearings I put back some shims after the crankshaft seemed to turn too tight. Was a bit nervous, but ran the engine at a fast idle for 30 minutes, and think I'll be OK. Any thoughts? Thanks for your replies!

05-30-2015, 12:56 AM	#24
Mike V. Florida Senior Member Join Date: May 2010 Location: South Florida Posts: 14,052	Re: shimming engine bearings I use the aluminum foil method. __________________ What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II

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