Current Project: Beehive Valve Springs

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Dec 27, 2005 | 02:29 PM

#41

Jughead

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From: Just because I'm paranoid doesn't mean people aren't out to get me...

St. Jude Donor '09

How are you replacing the springs while keeping the valves from falling into the cylinders?

Dec 27, 2005 | 03:03 PM

#42

zwede

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From: Plano TX

Compressed air. I got an adapter hose from pep boys. Spark plug fitting on one side, shop air fitting on the other. I'm putting 90 PSI into the cylinder and there's no way the valve can go down.

Dec 29, 2005 | 08:25 AM

#43

Jason Staley

Melting Slicks

Joined: Dec 1999

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From: Mid West

Cruise-In III Veteran

Quote:

Originally Posted by zwede

Compressed air. I got an adapter hose from pep boys. Spark plug fitting on one side, shop air fitting on the other. I'm putting 90 PSI into the cylinder and there's no way the valve can go down.

Another way of keeping the valves up while changing springs on a fully built engine is using rope. I did this and it works great, justs takes a little more time. You insert a long piece of ~1/4" diameter rope thru the spark plug hole (make sure you leave some hanging out

), rotate the engine so that cylinder is close to top and the rope is filling the combustion chamber. Now you can take off that cylinder's springs and the valves won't drop down. After the the springs are in, rotate engine a little to loosen up the rope, slide it out and do it all over again on the next cylinder.

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