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Old 02-13-2021, 12:51 PM   #19
Tim Ayers
Senior Member
 
Join Date: May 2010
Location: NJ
Posts: 6,177
Default Re: Block leak help, Lending a hand!!!

Quote:
Originally Posted by flathead48 View Post
B & S , I agree with you 100% flatheads are to expensive to build. I am going to try to get the valve chamber sand blasted to get a better look. I don’t know how common it is for blocks to crack inside the valve chamber but I was surprised.
Cracks inside the valley are most likely a flaw in the casting. If you look real close, you can see a casting parting line that runs from front to back.

Sadly, I have two that did not hold pressure in that area when tested. Sure glad I found out before moving forward. From what I gather, that part of the block is really thin.

Last edited by Tim Ayers; 02-13-2021 at 12:57 PM.
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