Hollow stem valves - CLASS RACER FORUM

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Hollow stem valves

07-15-2017, 02:50 PM

#11

Chris Hill

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Join Date: Jan 2002

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Re: Hollow stem valves

Quote:

Originally Posted by Rob Wright

It generally just didn't look as smooth with more deflection near the nose and a little bit of drumming at the closing point. 150 lb less spring Force cleaned it all up and made it look beautiful.

High spring force is definitely not your friend all of the time.

Would you mind posting graphs of the data if available?

Chris Hill
Old valvetrain engineer

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