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White exhaust valves??


CO54

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Pulled the head off yesterday,  manually turned the crank and verified everything is moving with pistons and valves.  That was great news for a truck that was parked in '73.  Otherwise engine history is unknown.

All the exhaust valves are white with a chalk like substance. 

Input please? 

20190519_171845.jpg

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On 5/21/2019 at 8:19 AM, CO54 said:

So not necessarily something to be overly concerned about?...

 

unless you are gonna lick 'em!  ?

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