Create an account Home  ·  ·  Forums  ·  ·  Articles  ·  ·  Downloads  ·  ·  Photo Gallery  
Login
Nickname

Password

Don't have an account yet? You can create one here.

Navigation
· Home
· Article Archive
· Article Submit
· Downloads
· FAQ
· Forums
· Members List
· Photo Gallery
· Private Messages
· Web Links
· Your Account

Search Articles



Forums

24volt Coils Again
M38a1 pics during Cuban Missile Crisis
Correct Carter YS-950S
Are these both Carter YS 637 Carbs?
Side curtin interchange?
Frame doors m38a1
Side panels and doors - M38
Strap Routing for Top Bow storage.
24v Adapter Kit For Sale - SOLD
Transfer case + Overdrive gear lube amount

Willys M Jeeps Forums


willysmjeeps.com :: View topic - M38 - MB Engine | 12V or 24V?
 Forum FAQForum FAQ   SearchSearch   UsergroupsUsergroups   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

M38 - MB Engine | 12V or 24V?

 
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base
View previous topic :: View next topic  
Author Message
JeepFregia
Member


Joined: Sep 07, 2020
Posts: 19
Location: Hardin, TX

PostPosted: Sun May 28, 2023 10:10 am    Post subject: M38 - MB Engine | 12V or 24V? Reply with quote

I have some time before I get close to this, but I want to start thinking about this and plan.

My M38 came with a MB Engine and 12V system to start up the engine. None of the gauges worked and the only lights that worked were the headlights. I havenít checked if the gauges and other lights are 12V or 24V, but I assume it would be 24V.

- Can I completely convert to a 24V with the MB engine?
- Can go 24V electrical, but convert down to 12V for the engine?

I would eventually find a MC engine, but I am just getting it back together. Just want to prepare for getting an MC engine in the future.
_________________
Ryan F
1951 M38
Back to top
View user's profile Send private message Send e-mail
JeepFregia
Member


Joined: Sep 07, 2020
Posts: 19
Location: Hardin, TX

PostPosted: Sun May 28, 2023 12:41 pm    Post subject: Reply with quote

It couldnít be this easy could it?

Truck DC 24v to 12v Step Down Converter Reducer Regulator 1.5A 18W Power Supply Adapter for Auto Car Bus Van Vehicle Boat Solar System etc.(Accept DC15-40V Inputs)

But I would need a 24V generator to keep the batteries charged.
_________________
Ryan F
1951 M38
Back to top
View user's profile Send private message Send e-mail
wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 16098
Location: Wisconsin

PostPosted: Sun May 28, 2023 4:38 pm    Post subject: Reply with quote

First determine weather your engine is still chain drive cam or gear drive modified.


Second determine which flywheel you have and which bell housing. Here are examples:

Early vs late M38. WWII is very similar to early M38.

Determine which casting number block you have:


WWII 638632 casting has serial number on side behind oil filter bracket.

Determine if your front engine mount plate is WWII Mb:

Or the postwar civvy/M38:


Find out the tooth count of your flywheel. Early WWII and CJ are 97 tooth


_________________
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
Back to top
View user's profile Send private message Send e-mail Visit poster's website
JeepFregia
Member


Joined: Sep 07, 2020
Posts: 19
Location: Hardin, TX

PostPosted: Sun May 28, 2023 5:54 pm    Post subject: Reply with quote

Here is my Engine, Casting Number is 638632 and for sure has a MB Serial Number. Although I could not tell you the rest off the top of my head. And I do have the Early M38 Bell Housing cover plate.



Also, the Transmission does not look to be the one that was used on the M38's with the vented housing cover. And the housing go up the shifter does not look like the correct one.



I will have to get the rest of the info on the timing cover drive, the flywheel tooth count and the Front mount.
_________________
Ryan F
1951 M38
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001 phpBB Group
Forums ©

 



PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.