JBB

Hey,

Im about to replace the valve seals on my redtop, I have the head on the block and the motor is on an engine stand. Im really not looking to take the head back off so I was reading that I can use an air compressor attached to the spark plug holes (already have the adapter) to keep the valves from dropping into the combustion chamber. I dont have a compressor so I was going to go to home depot and rent one...I read that anywhere around 70-90 psi should be enough to hold them up, but my question is: what size tank do you all think would be sufficient? I believe the normal size compressor that they rent out is the pancake style 6 gallon, is that enough to get through 1 seal before running out of air or would that be pushing it? Thanks