Hey guys...I just received my M38 engine back from the Speed Shop getting new main and rod bearings installed. I have the engine completely back in the jeep and have a question.
First background info....the speed shop removed, checked, and reinstalled the oil pump using the documentation from Wes where the large side of the oil pump drive shaft is at 2 o'clock position and the engine at 5 degrees before top dead center.
This jeep is also running 12 volts with civvy distributor....not 24 v original.
For the initial startup, what would be the proper position of the distributor to get an initial start. Should the points just start to open? Or on the lobe completely? Understanding that the rotor turns counter-clockwise as facing it.
Thanks in advance!
Mark
Initial run and distributor setting
- MarkR1951M38
- Contributor

- Posts: 117
- Joined: Sun Aug 21, 2016 6:00 pm
- Location: Huntsville, AL
Initial run and distributor setting
1951 M38 MC 22731
(Converted 12v, Carter WO carb, single action fuel pump, electric wipers)
http://www.willysmjeeps.com/v2/modules. ... _album.php
(Converted 12v, Carter WO carb, single action fuel pump, electric wipers)
http://www.willysmjeeps.com/v2/modules. ... _album.php
- wesk
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- Location: Wisconsin
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With the the oil pump installed correctly.
The engine crank positioned with #1 At 5 deg's BTDC.
Then the civvy style distributor is installed using the directions in the civvy manual SM-1002:

Link to larger view file: http://willysmjeeps.com/v2/modules/gall ... str_sm.jpg
The engine crank positioned with #1 At 5 deg's BTDC.
Then the civvy style distributor is installed using the directions in the civvy manual SM-1002:

Link to larger view file: http://willysmjeeps.com/v2/modules/gall ... str_sm.jpg
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. ... _album.php
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. ... _album.php
- MarkR1951M38
- Contributor

- Posts: 117
- Joined: Sun Aug 21, 2016 6:00 pm
- Location: Huntsville, AL
Awesome Wes, I knew you'd come thru. THANKS! I'll try it tomorrow.
1951 M38 MC 22731
(Converted 12v, Carter WO carb, single action fuel pump, electric wipers)
http://www.willysmjeeps.com/v2/modules. ... _album.php
(Converted 12v, Carter WO carb, single action fuel pump, electric wipers)
http://www.willysmjeeps.com/v2/modules. ... _album.php