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1980 KZ750 LTD H valve shim question
- braddlesnake
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I've just had my valve seats machined and I have bought all new exhaust and intake valve stems, my question is what size shims do I start with? I had a baseline before disassembly but with new valve stems and new seats will the original valve clearance values even be relevant?
Thanks for the help.
Brad
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- Nessism
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- braddlesnake
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Cheers
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- Nessism
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- braddlesnake
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thanks
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- SWest
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- 10 22 2014
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Steve
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- missionkz
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CORRECT! I wish I would have thought to ask my machine shop to grind a few thousandths off my valve stem tips. Why? Because I have dozens and dozens of #270 through #300 shims and after the valve job, I had none thin enough to make it work and I ended up sourcing lots of #220 through #250 to get the head back in spec.swest wrote: You may have to have the valves "tipped".
Steve
What a pain ....in the middle of riding season!!
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- Nessism
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braddlesnake wrote: I'm in Canada with an English wife, hence the cheers, I have a US post box though cuz I live right on the border.
thanks
Checked the spares box and found some thin shims my good friend Koolaid Kid (George) passed my way. Got 4-2.30's, 3-2.25's, and 1-2.20. Install those and then you should be able to measure some clearance at your valves and calculate what actual shims you need. I'll trade you these things for something fatter shims in the 2.40 - 2.70 range. PM me if you want to discuss.
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- car5car
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I used my bench grinder to shorten valve stems. I was turning valves while grinding. Instead of flat tops I got cones. I adjusted valve clearances to smallest spec, considering that cone tops can wear out.missionkz wrote:
CORRECT! I wish I would have thought to ask my machine shop to grind a few thousandths off my valve stem tips. Why? Because I have dozens and dozens of #270 through #300 shims and after the valve job, I had none thin enough to make it work and I ended up sourcing lots of #220 through #250 to get the head back in spec.swest wrote: You may have to have the valves "tipped".
Steve
What a pain ....in the middle of riding season!!
96 Yamaha Royal Star
82 Yamaha Virago 920
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- SWest
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Steve
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