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Willys M Jeeps Forums


willysmjeeps.com :: View topic - Low compression
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Low compression

 
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Shakinboxcarjoe
Member


Joined: Aug 17, 2010
Posts: 34
Location: Easton, md

PostPosted: Wed Dec 24, 2014 10:25 am    Post subject: Low compression Reply with quote

Finally wired up motor to crank it over. Checked compression between 40-60 in all cylinders. Do you guys find a valve lapping and honing, new rings usually do the trick? Also this is a 51 m38 but I suspect it's a civvy motor. It's 24 volts but it came withe civvy carb and fuel pump...how can I confirm? Thanks
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buzzk
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Joined: Dec 03, 2013
Posts: 197
Location: Saint Augustine , Florida

PostPosted: Wed Dec 24, 2014 1:22 pm    Post subject: motor Reply with quote

I think it should say on top of water pump the block boss there is a serial # starting w/ MC 123456 etc the motor mount supports are opposite one facing forward and one backwards buzzzzz
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wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 16262
Location: Wisconsin

PostPosted: Wed Dec 24, 2014 9:17 pm    Post subject: Reply with quote

The only way to ascertain for certain what chassis Willys originally installed an engine in is the serial number prefix stamped on the boss above the water pump.

MB = Willys MB
V = CJV35
MC or RMC + Willys M38
CJ2A or J = CJ2A
3A = CJ3A & DJ3A
P = Pickup
U = Utility
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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