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Case Tractors Discussion Forum

Case VAC head thickness

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12-09-2022 15:03:55

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I have read on this site where a VAC head (later model) can be shaved to .150. I was thinking on shaving mine when doing my head. I know the routine of putting putty in and retightening the head to show i have clearance, but it would save a step if anybody knows the thickness of the head from the base to the ridge where the valve cover sits on. I would appreciate that info. Thanks to anyone who can provide it.

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12-09-2022 17:26:54

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 Re: Case VAC head thickness in reply to kenbob, 12-09-2022 15:03:55  
Shaving the head will make no difference in the piston to head surface dimension, the head is flat except for the combustion chamber, the head gasket will provide the running clearance. If you were planning to mill the top of the block that is a different area altogether. Forget all that putty stuff, .150 seems like quite a bit, I have never taken one that far but .100 is normal for a DC, DC heads will crack if taken to far.

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12-09-2022 18:15:50

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 Re: Case VAC head thickness in reply to mEl, 12-09-2022 17:26:54  
Thanks for the advice, I wasn't going to do more than .10 to be safe.

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12-09-2022 18:19:03

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 Re: Case VAC head thickness in reply to kenbob, 12-09-2022 18:15:50  
To digress a little on a cold night, I used to have some Studebakers. I never owned the later small six, which was just an overhead valve version of the 170 flat head. Those things were prone to head cracking. Some motorhead figured out it was because the head was too thick in some places and heat could not dissipate. Shaving the head thinned them up enough cracking was less of an issue.

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