Bad valve seats?

  • Cyrussaurusrex
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Re: Bad valve seats?

01 Oct 2016 11:15
#744166
swest wrote: The Dyna S is set at full advance.

I'm not sure what you mean, is that a bad thing? Or is it supposed to be?

Also, besides doing the above suggestions, some guys around my area told me to use light duty metal polish with a q-tip for the float needle seats, stating it would work wonders for keeping the seats slick. Has anyone else had experience with this?
1978 KZ1000
20K miles
The fun isn't riding the thing, it's getting it to be road worthy that's the exciting part!..Kinda

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  • missionkz
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Re: Bad valve seats?

01 Oct 2016 14:59
#744181
Cyrussaurusrex wrote:
swest wrote: The Dyna S is set at full advance.

I'm not sure what you mean, is that a bad thing? Or is it supposed to be?

Also, besides doing the above suggestions, some guys around my area told me to use light duty metal polish with a q-tip for the float needle seats, stating it would work wonders for keeping the seats slick. Has anyone else had experience with this?
i would say, just about all of us do that. I use half a Q tip with the stick stuck in my battery drill and spin it in place for a few seconds with a couple drops of fine polishing paste on it.
Just clean the brass really well when done.
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado

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Re: Bad valve seats?

01 Oct 2016 15:25
#744185
I do the q-tip in the drill thing with some fine grit valve lapping compound.
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

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  • SWest
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Re: Bad valve seats?

01 Oct 2016 17:05
#744192
You set the Dyna S with the full advance line on the rotor not the F mark then lower the idle. Dip the q tip in metal polish, put it in a drill and use it to clean the seats. Mine were so bad I whittled a pencil so the tip would fit in then used fine valve grinding compound to reshape the seats. I also put the needles in a piece of tubing put it in the drill while using a flat stick and grinding compound to take the grooves out. It works. B)
Steve

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Re: Bad valve seats?

04 Oct 2016 08:24
#744444
Much appreciated Swest, although I did exactly what the pdf informed but my idle was popping like crazy afterward. Should I tune everything else around this new timing?
1978 KZ1000
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The fun isn't riding the thing, it's getting it to be road worthy that's the exciting part!..Kinda

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Re: Bad valve seats?

04 Oct 2016 12:37
#744465
Popping could be lean, carbs way out of sync, etc. Pics of plugs?
Steve

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