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05-20-2015, 03:45 PM
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#1 |
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Junior Member
Join Date: May 2015
Location: So. IL
Posts: 3
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Need to know the standard bore size of '28 Model A 4 Banger
Hey everyone! Newest member of the Ford Barn! I'm working on a friend's '28 Model A- engine was locked up so I removed the head and oil pan. Had a broken piston. He wants to get it running fast so I'm looking for a piston. This one measures 3.885" Cylinder bore size is 3.900" Is this stock? Also will need a head if anyone can help with that.
Thanks! |
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05-20-2015, 03:55 PM
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#2 |
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Senior Member
Join Date: May 2010
Location: Eastern Tennessee
Posts: 11,508
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Re: Need to know the standard bore size of '28 Model A 4 Banger
3.8750 is Standard bore. 3.9050 would be .030" oversized. Hone it a tad over the .005" and you should be close if the cylinder is round. Otherwise you need a .010 piston.
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05-20-2015, 03:58 PM
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#3 |
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Senior Member
Join Date: May 2010
Location: Eastern Tennessee
Posts: 11,508
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Re: Need to know the standard bore size of '28 Model A 4 Banger
BTW, welcome to Fordbarn!!
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05-20-2015, 05:55 PM
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#4 |
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Senior Member
Join Date: Mar 2013
Location: Australa Melbourne
Posts: 878
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Re: Need to know the standard bore size of '28 Model A 4 Banger
Brent is correct 3.8750 is std bore common piston over sizes today from most parts house are 0.020" 0.030 0.040" 0.060" 0.080" 0.100" 0.125"
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05-20-2015, 07:43 PM
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#5 |
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Senior Member
Join Date: May 2010
Location: Asheville,NC
Posts: 3,104
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Re: Need to know the standard bore size of '28 Model A 4 Banger
Where are you located? It would help on the head issue.
__________________
http://www.model-a-ford-4bangers.com/ |
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05-20-2015, 11:28 PM
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#6 |
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Senior Member
Join Date: May 2010
Location: on the Littlefield
Posts: 6,156
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Re: Need to know the standard bore size of '28 Model A 4 Banger
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05-21-2015, 08:48 AM
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#7 |
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Senior Member
Join Date: May 2010
Location: South Florida
Posts: 14,054
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Re: Need to know the standard bore size of '28 Model A 4 Banger
Good luck and welcome!!
__________________
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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05-29-2015, 01:57 PM
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#8 |
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Junior Member
Join Date: May 2015
Location: So. IL
Posts: 3
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Re: Need to know the standard bore size of '28 Model A 4 Banger
Thank you everyone for the warm welcomes! And I will take more measurements in the cylinder to make sure it is true. I am located in Southern Illinois- brought the head to a machine shop, but they said it had too many hairline cracks to repair..
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05-29-2015, 10:04 PM
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#9 | |
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Senior Member
Join Date: May 2010
Location: South Florida
Posts: 14,054
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Re: Need to know the standard bore size of '28 Model A 4 Banger
Quote:
They are plentiful and not expensive. I would suggest Berts in Denver for a used head that I'm sure would be in good shape. It would be a crap shoot from most other sources.
__________________
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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05-30-2015, 06:29 AM
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#10 |
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Member
Join Date: Jul 2014
Posts: 43
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Re: Need to know the standard bore size of '28 Model A 4 Banger
I have a head I took off to install a hi-comp head. Ran good. $40.00 plus shipping from Minnesota
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