M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

1952 - 1968, M38A1, M170, questions, discussions, regarding anything related to the M38a1 series.
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Joe Gopan » Tue Jun 29, 2010 11:55 am

Jon, ya gotta think simple :wink: The answer threw me when the Instructor asked "what is the purpose of a sparkplug," and waited for someone to speak up. Anyone else want to try?
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by M38A1 MP Jeep » Tue Jun 29, 2010 12:51 pm

To create a spark :lol:
I am seeking information on M38A1's configured for MP use from 1953-?.

I am also interested in equipment and uniforms worn and carried by MP's during this timeframe.

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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Joe Gopan » Tue Jun 29, 2010 12:57 pm

To provide an "air gap".
This trivia was part of the classroom lecture directed at new students and aimed at getting non mechanics started in the basics. As the students progressed and got hands on experience, these little bits of trivia would fall into place.
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by idiocrates » Tue Jun 29, 2010 1:10 pm

I am sooooo glad I didn't give my answer.....I thought they were to provide a congregating and excersize place for all those pesky electrons that build up around the ignition coil during operation. I was only going to say that if the answer had not been that they provide a functional plug for that annoying extra hole in the cylinder head.

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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Joe Gopan » Tue Jun 29, 2010 1:23 pm

All the student had to do was pay attention, study, work well with others, be proud of his uniform and conform to Army life.
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Joe Gopan » Tue Jun 29, 2010 6:58 pm

What are some significant items that come with the M-38A1 GI Issue Factory Engine Overhaul Gasket Set that will not be in the civilian equivalent set by Felpro or Victor?
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Warren Duchesne » Wed Jun 30, 2010 9:49 am

3 are the gasket between the rear of the engine block and the metal plate , starter to plate ,and inspection cover on bell housing . Warren Duchesne

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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Joe Gopan » Wed Jun 30, 2010 12:49 pm

You are right on. :wink:
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Dokimos » Wed Jun 30, 2010 9:28 pm

There is just one more gasket between the metal cover and the bell housing (flange "x")

so total number of 4

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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Cuz » Wed Jun 30, 2010 10:07 pm

Actually the number of extra parts is higher.
Gasket, adapter plate to block
Gasket, adapter plate to bell housing
Gasket, Bell housing inspection plate
Gasket, Copper starter bolts 2 each.
Gasket, Starter
Gasket, seal, adapter plate to bell reinforcement angle bolts 4 each.
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Joe Gopan » Thu Jul 01, 2010 3:48 am

The most important Gasket that is included with the WO-807924 Factory O.H. Gasket Set that the Civilian O.H. Gasket sets do not include is the WO 806271 Insulator installed between the Carburetor and Cylinder Head, it is the OEM thick one. The Civilian sets include a thin gasket for that location.
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Joe Gopan » Sat Jul 10, 2010 4:06 am

NEXT QUESTION:
The M-38A1 as well as the M-38 share the same Master Cylinder Brake Inspection Cover on the Floorboard, it is Willys Part No. 674882.
The CJ-5 (1955-1971) also uses the same cover, but it has a different Part Number, 689699.
Anyone know the reason for the same part, different number?
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Bob W » Sat Jul 10, 2010 10:21 am

Paint color.
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Joe Gopan » Sat Jul 10, 2010 10:46 am

You are correct. The Black paint gives it a CJ Part Number. Sometimes ordering the GI Issue M-38A1 part by correct number would still result in a black part tho.
Wouldn't it be nice if it were possible to order all those 50's-60's available CJ parts thru Jeep again. I would stock up on CJ-3A/CJ-5 Body Tubs and Fenders.
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Re: M-38A1 QUIZ-HOW WELL DO YOU KNOW THE M-38A1?

Post by Joe Gopan » Fri Mar 30, 2018 5:10 am

How well do you know your M-38A1?
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