CJ supersonic head

1941 - 1945, MB, GPW Technical questions and discussions, regarding anything related to the WWII jeep.
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2305johnt
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CJ supersonic head

Post by 2305johnt » Thu May 12, 2022 12:36 am

Hi

Quick question please.

We have a 1943 GPW with a CJ engine with a ‘supersonic’ head.

Would a replacement original GPW head fit the existing engine?

Thanks


slatgrille
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Re: CJ supersonic head

Post by slatgrille » Thu May 12, 2022 3:28 am

Yes. I had the exact same thing in my '42 MB. Just swapped heads and off I went!

Craig

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Klaas
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Re: CJ supersonic head

Post by Klaas » Thu May 12, 2022 7:11 am

It will work.
Only thing is that you won't be "supersonic" anymore and have to potter along at low subsonic speeds like the rest of us...
Klaas
GPW17331 - April 21 1942 - Dallas, "J-dot"
BSA Airborne Bicycle R49171 - 1944

2305johnt
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Re: CJ supersonic head

Post by 2305johnt » Sun May 15, 2022 9:06 am

Thanks for the help. Is it much of a job to change - we are not good mechanics unfortunately!

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dpcd67
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Re: CJ supersonic head

Post by dpcd67 » Sun May 15, 2022 9:59 am

Child's play. Any 14 year old girl can do it, after she studies her engine TM for a week and gets all the tools and parts needed first. And a torque wrench. Get TM 9-1803A and study it.
You really need some skills to own these old vehicles. Either that, or pay the $100 per hour to have it done. I do have friends in the latter category; they refuse to learn. But this is your big chance. Hopefully someone near you can teach you.
Come over and I will.
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2305johnt
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Re: CJ supersonic head

Post by 2305johnt » Mon May 16, 2022 10:45 am

Thanks. - we will step up now!!


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