Compression Release Valves

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Oct 5, 2017 | 05:29 PM

cowboybob56

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Joined: Jul 2008

Posts: 414

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From: Red Rock, Arizona

Compression Release Valves

I have a 2002 96" EVO special construction rigid bobber, with some S&S parts that I can't get a 2.0 KW starter to last more than a couple years before they burn out trying to overcome the compression. What is a good price for the machining for compression releases? Or is there another direction I should be looking?

Oct 6, 2017 | 06:52 AM

grbrown

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Joined: Jun 2007

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From: Bedford UK

My S&S engine came with auto CRs. No idea what it will cost to get the heads machined to add them, I suggest you ask around local indy shops. It is similar to adding extra spark-plug holes. You have two options: mechanical ones, which are hand-operated and obviously need to be accessible; or auto ones which can be tucked out of the way - I can't even see mine. They operate on pressing the starter button, as if by magic!

Oct 6, 2017 | 07:06 AM

98hotrodfatboy

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Joined: Mar 2010

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From: Poolville

Mistake.......

Last edited by 98hotrodfatboy; Oct 6, 2017 at 07:08 AM.

Oct 6, 2017 | 07:07 AM

98hotrodfatboy

Seasoned HDF Member

Joined: Mar 2010

Posts: 21,168

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From: Poolville

$150-200...... Plus a gasket set and you do the r&r .... What's your CCP?

Oct 6, 2017 | 09:01 AM

Mattbastard

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Joined: Nov 2009

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From: Tampa

When I had a set of heads done by NRHS they added $50/head to machine the holes for the CR's next to the spark plug. Then I bought Briggs and Stratton button CR's for like $15.