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Valve seal?

Wilford Brimley

Wilford Brimley

Is posting from the grave
Joined
Jun 26, 2008
Location
Marysville, wa
I've never dealt with this before but I get a good amount of blue smoke after about 1m of running then it will eventually devolve into small poofs of smoke sooo since I have covid(feel fine but still off work) thought I'd tear down the motor and clean and inspect everything upon which I found what I think is the culprit of my smoke? Is this a valve seal issue usually?

 
Exhaust guide doesn't use a seal from the factory, and the stock guide isn't machined for a seal.
Aftermarket bronze guides are the same for intake/exhaust (not all, but most are), and you can run those with or without a seal.
 
culberro said:
Exhaust guide doesn't use a seal from the factory, and the stock guide isn't machined for a seal.
Aftermarket bronze guides are the same for intake/exhaust (not all, but most are), and you can run those with or without a seal.
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Ok didn't know i just don't know why oil would be there
 
Exh valve guides definitely wear on badly beat to **** 'ridden hard & put away wet' 240T non-IC higher mile cars, but not that much, commonly, on most of the rest of the Volvo SOHC, tho I don't bother much with 7/9s & did a bunch of HGs/dealt with a bunch of over-heats on those?

IDK what happens to them on overboosted TBed-ed out redblock time-bombs when the owner coulda just had a V8 or 3.0 B280 recombine?

If the crankcase has excess pressure I suppose it could be an issue? :e-shrug:

Intercooled cared for cars no exh valve seal hasn't been a 'problem' with synthetic oil & ZDDP additive?
 
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I had an exhaust valve that had the seals installed seize, so I definitely would not do that again. That little trickle of oil gets burned off, I'm thinking your guides are a bit loose.
 
VB242 said:
I had an exhaust valve that had the seals installed seize, so I definitely would not do that again. That little trickle of oil gets burned off, I'm thinking your guides are a bit loose.
Click to expand...

Cost iron guide, or bronze?
 
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