134 L-head differences

hndrsonj · Nov 3, 2016

So my M38 needs a motor. It has a GPW motor currently in it. As far as a long block, what are the differences between MB/GPW, CJ2A, and M38 engines? I know of the timing chain/timing gear changes; what else is there. All I have found are CJ2A engines.....

Tinwoodsman · Nov 3, 2016

The M38 originally used the Go-Devil 60 HP engine but do to weight issues they upgraded it to a Hurricane 72 HP engine.

hndrsonj · Nov 4, 2016

To my knowledge the Hurricane was never put in the M38 only the M38A1.

Tinwoodsman · Nov 4, 2016

I found the information on the Internet so it must be true. :roll:

68t · Nov 4, 2016

The Mb, gpw , m38 and cj2 had the flat head engine. The m38a1 had the over head valves, If you use a overhead, you will had to cut a hole in the hood.. Use the flat head engine for your m38.

hndrsonj · Nov 4, 2016

68t said:
The Mb, gpw , m38 and cj2 had the flat head engine. The m38a1 had the over head valves, If you use a overhead, you will had to cut a hole in the hood.. Use the flat head engine for your m38.

Right, but what are the differences in the flat head variations?

68t · Nov 4, 2016

Well , there is not a lot of difference. You know about the timing chain and the cj is gears, But to me I like the cj2 better than the ww2 engine, I think they were build better, I know folks who has the cj in there ww2 jeep and they having less problem. I,m working on a m38a1, but will use the cj f head and 12 volt system. I got 4 cj flat heads engine . I don,t know about the m38 engine, never had one. I would sell the gpw engine , use that money for a later cj engine or m38. Also try g503 they know there jeeps. Try to find engine local , shipping nowday is out of sight. I got 3 halftracks, a ww2 5 ton tractor and jeeps and cckw ,

too much junk

hndrsonj · Nov 4, 2016

68t said:
Well , there is not a lot of difference. You know about the timing chain and the cj is gears, But to me I like the cj2 better than the ww2 engine, I think they were build better, I know folks who has the cj in there ww2 jeep and they having less problem. I,m working on a m38a1, but will use the cj f head and 12 volt system. I got 4 cj flat heads engine . I don,t know about the m38 engine, never had one. I would sell the gpw engine , use that money for a later cj engine or m38. Also try g503 they know there jeeps. Try to find engine local , shipping nowday is out of sight. I got 3 halftracks, a ww2 5 ton tractor and jeeps and cckw , too much junk

My GPW engine is junk. I know of a CJ motor in Denver, I just want to make sure all the accessories and the engine will bolt in with no problem if I were to get it.

68t · Nov 4, 2016

Your m38 should have the T90 tran, so it should bolt up, but some have flywheel and starter problems, like the number of teeth on flywheel and starter, who know some one may have modified your m38. You need to go on g503 and ask if anyone has made the change over on the m38. and hopefully some one on here my have done a change. I don,t think you will have any big problems. I would say go , but check all out first.

134 L-head differences

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