Valve guide size

  • bromz
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30 Mar 2016 17:05 #718348 by bromz
Valve guide size was created by bromz
I removed my worn valve guide and bought a standard to replace it. Slides right in! So I ordered a .002 and .004 oversized same thing. Where do I go from here?

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  • SWest
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30 Mar 2016 17:33 #718356 by SWest
Replied by SWest on topic Valve guide size
Did metal come out with it?
www.kzzone.com/valves.html
They have a larger size.
In the day I had a friend knerl a valve guide on his lathe. Metal came out with the old one. It worked well.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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  • bromz
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30 Mar 2016 17:55 #718368 by bromz
Replied by bromz on topic Valve guide size
I have access to a machine shop if they are willing to do it. worked ok? metal had to of come out cause I couldn't get all the carbon off.

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30 Mar 2016 17:57 #718369 by PLUMMEN
Replied by PLUMMEN on topic Valve guide size
Thats why you should glass bead the combustion chambers/ports to get all of the carbon out of there first. ;)
Still recovering,some days are better than others.

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  • bromz
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30 Mar 2016 17:58 #718370 by bromz
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also the one I see on kzzone.com is .004 that's the biggest I see

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30 Mar 2016 17:59 #718371 by PLUMMEN
Replied by PLUMMEN on topic Valve guide size

swest wrote: Did metal come out with it?
www.kzzone.com/valves.html
They have a larger size.
In the day I had a friend knerl a valve guide on his lathe. Metal came out with the old one. It worked well.
Steve

Knurling the inside of guides to take the slop out used to be a common thing,Ive never seen it done on the outside :laugh:
Still recovering,some days are better than others.

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  • SWest
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30 Mar 2016 18:05 #718374 by SWest
Replied by SWest on topic Valve guide size
It worked like a charm. Barry of Handy Cycles was old school. I learned a lot from him.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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30 Mar 2016 18:32 #718386 by Nessism
Replied by Nessism on topic Valve guide size
Look further down the page at APE. They sell some bronze guides they label as "repair" guides that are .502". I presume you use a .500 reamer for those. Call APE and ask.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
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30 Mar 2016 18:37 #718388 by SWest
Replied by SWest on topic Valve guide size
Yup, that's why I posted the link. It will have to be professionally done anyway.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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  • bromz
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30 Mar 2016 18:45 #718391 by bromz
Replied by bromz on topic Valve guide size
how much bigger is a .502 than original? why cant I just put oversized guide in and lap the vavle?

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30 Mar 2016 18:55 #718394 by SWest
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Call them and ask. I wouldn't be comfortable doing that myself.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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  • bromz
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30 Mar 2016 19:11 #718399 by bromz
Replied by bromz on topic Valve guide size
I will see tomorrow if the machinist can knurl the outside of it and see if that gets me there. If not its off to the professionals.

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