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willysmjeeps.com :: View topic - M38A1 Engine Number
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M38A1 Engine Number

 
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Z
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Joined: Mar 27, 2017
Posts: 42

PostPosted: Thu Jan 16, 2020 8:43 pm    Post subject: M38A1 Engine Number Reply with quote

1952 M38A1 Engine number is MD 95388. Also, there is a "020" before the MD 95388. Is the "020" to identify the engine has been bored to .020? Any input is appreciated. Working on getting picture of the a1 posted.
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Z
-52 M38 (Ser# 61033)
-52 M38A1 (Ser # 10047), Engine MD-95388

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wesk
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Joined: Apr 04, 2005
Posts: 14723
Location: Wisconsin

PostPosted: Thu Jan 16, 2020 9:41 pm    Post subject: Reply with quote

The Willys & Kaiser Factory practice for indicating over sizes and under sizes was to use a letter after the serial. So you can assume you have a numerical size marking preceding your serial number will mean that it was placed there in the field by someone other than Willys/Kaiser. So it could mean any of several sizes under or over, bearing sizes or piston bore sizes.
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Z
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Joined: Mar 27, 2017
Posts: 42

PostPosted: Fri Jan 17, 2020 10:21 am    Post subject: Reply with quote

Thank you sir.
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Z
-52 M38 (Ser# 61033)
-52 M38A1 (Ser # 10047), Engine MD-95388

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