what is the best one to change the springs and did you use the air to hold the valves from dropping?

 

Planning on doing this myself in the next couple of weeks. The spring tool I will be borrowing from a friend is the one capable of doing two at once (intake and exhaust). I'm thinking a simple compression tester kit can be rented from an Autozone-type place, which would include the air compressor fitting I believe. From what I remember, 60-80psi of pressure is what you want to use. Hopefully, this is a straight forward swap. I'm planning on it being a 5~6 hour job.

 

I think that the only ones that'll work under the cowl are the bolton and screw it down style. On the outer valves a standard lever type is much much faster. And it is best to use compressed air to hold the valves up.

 

crane dual valve spring compressor - you can do 2 at a time