changing valve springs without pulling a head

[MattStrike]

Where can I find the adapter for the spark plug hole to use the air compressor to hold the valve up, and what PSI does it need to be set to? I couldn't find the write-up (maybe I'm being lazy).

[bs009]

you could just use the pistons to keep the valves from falling. When I changed the valve stem seals on the Regal that's what I did. I just rotated the crank until the cylinder I was working on was at TDC.

[Zeik75]

I shoved some like 4 gauge power wire in and rotated up to hold the valves up. like the old rope trick without all the little frayed bits left in the cylinder.

[Luxrain]

just thought of maybe a balloon may work too

[1oldman]

Personally, I'd rather rotate the piston in each cylinder to TDC as I did each valve set fr that cylinder than take a chance on loosing the compressed air out of the cylinder. Me, with my luck, I'd loose the air and the valve would drop into the cylinder. - BC

[95naSTA]

When I did this without rotating the crank, I remember using a compression tester fitting with maybe an adapter fitting to a male air line fitting? I used about 100 psi.

[Archon]

I used the adapter from the leak down tester from Harbor Freight.
http://www.harborfreight.com/cylinder-l ... 94190.html