Just had a quick question on which compound to use. Napa sells an oil base and a water base, is there any difference? Also I have never manually seated a valve so if any one has any advice/reccomendations I would greatly appreciate it.

Thanks

 

It's also referred to as "lapping". Get a valve lapping tool. When you were a kid do you remeber playing with those guns that shot out the suction cup darts? That's what the tool looks like(not the gun, the dart).
As far as the compound goes I would probably buy the oil based lapping compound, I've never heard of a water based.

 

thanks

 

Get both course and fine compound. Start with the course until you get the valves seated like you want and then use the fine to "polish" the seat.

 

This is what I have done in the past with automotive cylinder heads. Coarse compound until you have an even grind, contact area. When you think you have a good seal and are ready to check it I use water to test for seapage/leaks. Hold the valve in in it's place firmly and put a couple of teaspoons worth of water in the valve port. You shouldn't see any leaks. If you do continue with the fine compound, be carefull not to remove too much material.

 

hmmm,.
I have heard of fine and course compounds coming in a double sided can but napa did not have it. They only had the water based and the oil based. Maybe I will try other auto parts stores. I did check the valves by spraying carb cleaner in the port and none of it leaked but you could see the area around the valve seat starting to get moist.
Thanks again