Quote:
Originally Posted by jeepguy1948
When looking at replacement valve sets online I see that they are supplied with different angles for intake and exhaust. The motor That I took apart had both intake and exhaust at 45 degrees.
I’m going to be grinding the seats so I can change the angles if that is the thing to do.
Are “3 angle” valve seats a good thing on a flathead or not?
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Using 30 degree on both will gain you some flow but with no other mods, you may not notice in the seat of pants.
3 angle is definitely good for more flow.
Knocking the cobs and corners off the inside of the ports helps also.