Really tiny valve lash setting?

[bad Chad]

I was setting the lash on my 229cc  CSC ZenShong today.  Its basically a knockoff of a seventies era Honda CG 125cc motor.  Very simple, very rugged.   

Anyway it took me quite a while to get the gap just right, as its specked at 0.07 mm.   The gap can range from 0.07 -- 0.04mm, but to set the gap at 0.07 mm because as the valve wears the gap will shrink.   I get that it's a smaller motor, but I recall the big block Guzzi gap at something significantly greater?

[guzzisteve]

Did you re-torque the head too? Go like you are going big side of gap.

[pehayes]

My antique Guzzi Falcone single 500 runs nearly zero-zero.  Valve lash improves as the horizontal cylinder lengthens under heat.

Patrick Hayes
Fremont CA

[oldbike54]

My antique Guzzi Falcone single 500 runs nearly zero-zero.  Valve lash improves as the horizontal cylinder lengthens under heat.

Patrick Hayes
Fremont CA

 Yes , and the OP's little motor is OHC , and OHC engines run small valve lash settings .

 Dusty

[Arizona Wayne]

My `91 VX800 Suzuki SOHC water cooled V-twin 4 valve clearance is .004" good for at least 18K miles.  Right now it has 84.5K miles on it and it still hardly loses any dino oil between oil changes. 

[Antietam Classic Cycle]

Yes , and the OP's little motor is OHC , and OHC engines run small valve lash settings .

 Dusty

The CSC TT250 (if that's what Bad Chad's bike is) has a pushrod engine, not OHC.
https://www.cscmotorcycles.com/Articles.asp?ID=293

[oldbike54]

The CSC TT230 (if that's what Bad Chad's bike is) has pushrod engine, not OHC.
https://www.cscmotorcycles.com/Articles.asp?ID=293

 Well I stand corrected then .

 Dusty

[bad Chad]

Thanks Charlie.

[wymple]

My GS Suzuki runs about under .002 set correctly. They don't get adjusted (bucket & shim) unless I catch them around .001.  That's in inches, the factory calls for .03-.08 mm.  My Guzzis have always had many times that clearance.