valve seats
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Senior User
Joined: Nov 2002
Posts: 316
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From: ca
valve seats
i just finished doing a 3 angle valve grind on my intakes and I looked down and saw that one of my exhaust seats was tore up prettyt badly probably the seat where the burned exhaust valve resided, i was wondering if I go and have a new seat put in it should I just go ahead and get new seats for all 16 or just the one?
Laughing Gas
Joined: Nov 2002
Posts: 1,198
Likes: 9
From: Fairmont
valve seats
First thing is to have the head checked for cracks. Many times when you have a burnt valve, that also causes a crack. If everything is OK,at the most install 8 ex. seats. There is no need to do intakes.
Senior User
Joined: Jan 2003
Posts: 217
Likes: 0
From: Saraland AL
valve seats
The only real way to check for cracks is with either red dye and developer or to use MagnaFlux. MagnaFlux is the best.
Any good engine shop can do this. Shouldn't cost much and you'll need them to do the seats anyway.
Any good engine shop can do this. Shouldn't cost much and you'll need them to do the seats anyway.
Laughing Gas
Joined: Nov 2002
Posts: 1,198
Likes: 9
From: Fairmont
valve seats
Sometime if the cracks are small, installing a seat insert will cut out the crack, if larger than that find different heads. Trying to install a seat with a very tiny crack remaining will only be trouble down the road. The press fit of the seat will put pressure on the crack and besides I've never seen a crack shrink.
Good luck, check the seat with the burnt valve real good.
Good luck, check the seat with the burnt valve real good.
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