To grind or not to grind... Valve stem tips
- missionkz
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Some of the measured lash gaps at .002", some at .006" and one is a fat .007" ... all with using the hand full of #215 shims I have.
So, I'm thinking two 225s to close the big gaps up.
But .002" feels a little tight to me. I'd rather they were all .003" but maybe that's too anal...
I have two others at .004" with 235s ... not sure if I should take a chance on these with 240s and also grind the tips a .001"- .0015".
Been very careful over the many years of valve lash adjustments, with my shim gaps never under .002" and some as much as .003"-.004".
I'd prefer a tad loose then tight, but, .004" to .007" seems too loose
The only way to get in between those standard shim, thicknesses, where the sizes change .00197" (.002") up and down from number to number, is to remove all the valves and have the stem tips ground a thousands of an inch....???
What is the general consensus?
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- bountyhunter
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On my 750 twin, I run them .003 - .005". The original FSM said .002 - .004" but later many places said Kawi had opened it up to .002 - .006".missionkz wrote: I'd prefer a tad loose then tight, but, .004" to .007" seems too loose
1979 KZ-750 Twin
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- missionkz
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I've read two or three, totally different, answers to these shims being hardened all the way through or just a few thou's case hardened.
I've also heard of a few guys doing it with zero consequence.
I have access to surface grinder and a large handful of "close but no cigar" shims.... I don't know what to believe.
I could trim a couple of my 235's down to 230 and two of my 230's down to 225 with only a .001" grind from each side. ETC>>>>
I read somewhere that they are slightly doomed too.... my micrometer does not back that up.
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- missionkz
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Anyone??
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- TexasKZ
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1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
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- missionkz
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Probably dumb....
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- Tyrell Corp
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I was going to offer you some free, i have a box of 60, just not in your shim over bucket size.
Is this nearly what you need? vendor claims z power uk have them in stock....good luck anyway.
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces
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- missionkz
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Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- Tyrell Corp
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Seems like a difficult way to solve an easy problem
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces
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- SWest
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Steve
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- 650ed
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missionkz wrote: Yes, the 29mm shims.... they run anywhere from $7 to $10 plus around $4-$6 shipping here in the States
Rather than risk messing up your engine trying to avoid buying shims that are over-priced I suggest you simply find shims that are more reasonably priced.
For example - Z1E sells the 29mm shims for $4.82 each (rather than the $7-$10 ones you found). Ed
www.z1enterprises.com/ListItems.aspx?keywords=12037-001
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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