Quote: Some good info here..But how the heck did you get 2.25 valves into an rpm head? Thanks!! Ted (Sorry,Randy,for the Hi-jack)
Well, I used big intake seats.
As I remember, the seat's already large enough for the 2.250 valve.
On all the RPM heads I have seen, the original intake insert is not big enough to contain the entire 2.25 valve. Therefore, you have to grind the seat for the intake valve into the exhaust seat insert, unless, you replace the intake insert with a larger one. The new intake insert does not interfere, with the exhaust valve seat area in the exhaust insert. Whew!
