Exhaust valve guide replacement.
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Exhaust valve guide replacement.
Had lousy compression so I took the head off to do a valve job. 5 of the exhaust valve stems have a bit of play in them, and one of them has a ton of play in them. The 5 that are slightly loose wiggle around a bit but are tight at the top, and the sixth, really loose one is worn to more of an oval, rather then the circle. So obviously I need to replace the valve guides.
My question is, do I need to get the old guides machined out, and then have the machinist punch the new guides in. Or are the guides removable with an air hammer after warming up the head? It looks to me like they are removable guides, looking up from the bottom of the head I can see a ring at the bottom of the guides where they meet the head.
My question is, do I need to get the old guides machined out, and then have the machinist punch the new guides in. Or are the guides removable with an air hammer after warming up the head? It looks to me like they are removable guides, looking up from the bottom of the head I can see a ring at the bottom of the guides where they meet the head.
Post Fiend
Joined: Dec 2007
Posts: 8,521
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From: Lost
I would advise taking the head to a machine shop, and see if they reccomend new guides, or putting bronze guides into the head. Bronze guides can be a bit pricier, but should never need replaced again.
I can't recall if this head had guides that could be knocked out and replaced, or if they have to be cut out with special tools.
I can't recall if this head had guides that could be knocked out and replaced, or if they have to be cut out with special tools.
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The one guide definitely needs replaced, like I said it is more of an oval then the round shape it should. Tons of play at the top. Anyone know if the old guides can be hammered out and replaced at home?
Elder User
Joined: Jun 2010
Posts: 509
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From: Casper, Wyoming
Take it to a machine shop like Rouge advises. You'll be happy you did.
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