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J2 valve guide
Posted: Fri Apr 07, 2017 10:53 am
by jackdog
Hi Folks, I have just replaced the exhaust valve guide: does anyone know what size reamer I need to use to allow the valve to fit? And were can I get one from? Thanks.
J2 valve guide
Posted: Fri Apr 07, 2017 2:38 pm
by Revband
A correctly made guide should not need to be reaming.
J2 valve guide
Posted: Fri Apr 07, 2017 2:42 pm
by Revband
Not need to be reaming? Danrn spool checker. Reamed, also the required clearance will vary depending on whether bronze or cast.
J2 valve guide
Posted: Fri Apr 07, 2017 2:49 pm
by Mark M
Try Tracytools.com for a reamer but I don't know what size you'd need. If you know the stem size I'd guess about 3 thou more? Maybe more for an exhaust valve? Anyone? Guides are usually sized so that when shrunk in they are correct though...
REgards, Mark
J2 valve guide
Posted: Fri Apr 07, 2017 5:43 pm
by Revband
Air cooled engine inlet 2thou, exhaust 3thou, with pb guides, if they are cast guides you need an exhaust valve with a plated stem as they are now made of stainless and will pick up and jam open in cast iron. Also allow another 1/2 thou.