In block valve guide broke

1952 - 1968, M38A1, M170, questions, discussions, regarding anything related to the M38a1 series.
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dcartledge
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In block valve guide broke

Post by dcartledge » Mon Jun 14, 2021 6:14 am

Is this block now history or can it be fixed? Looks like its cast in to me...
D
45 MB,64 M151 Searchlight,66 M151A1,74 M151A2 Tow, 86 M1035


dcartledge
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Posts: 1589
Joined: Sun Dec 15, 2002 6:05 am
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Re: In block valve guide broke

Post by dcartledge » Mon Jun 14, 2021 6:28 am

Appears they are replaceable - how does one remove them?
D
45 MB,64 M151 Searchlight,66 M151A1,74 M151A2 Tow, 86 M1035

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dpcd67
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Re: In block valve guide broke

Post by dpcd67 » Tue Jun 15, 2021 6:01 am

Sure they are replaceable; look in your TM9-8015 and it will tell you all about how; you make a stepped punch and pound them out, or you make a puller and pull them out. Do a search of this site and you will find much more info on that. You can't work on these vehicles without a complete set of TMs/pubs; it is mandatory. Get the Civilian Jeep Universal manual too.
Of course on the F head, only the exhaust ones are in the block.
However, you might want a machine shop to do it if you aren't mechanically inclined; don't want to break something.
But the valve guides are routinely replaced on rebuild of the engine, Oh, and then you might have to ream them to fit the valve stem.
Never scrap a WW2 block; they can be fixed no matter what; mostly.
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