Pwnypower
CB750 Member
Hey Guys,
I finally got around and started the valve clearance job. But here comes a vague situation.
I got a micrometer and also a feeler gauge. When i measure the feeler gauge with the micrometer it gets to the appropriate measurement( so 0,05mm is 0,05mm+-0,01mm)
I started measuring my valve clearances and here are the results:
cyl 1:
left(with you sitting in the seat of the bike)
In: 0,08mm Shim 2,94
ex: 0,10-0,15mm
Right:
in: 0,08mm 2,93
ex: 0,15-0,25
cyl 2:
left:
in: 0,12mm
ex: 0,12mm
right:
in:0,15-0,20 shim 2,78
ex: 0,12mm
cyl 3:
left:
in: 0,10-0,15(about 0,12)
ex: 0,12mm
Right
in: 0,08 shim: 2,85
ex:0,12
cyl 4:
left:
in: less then 0,05mm shim 2,90
ex: 0,17 shim 2,86
right:
in: less then 0,05mm shim 2,90
ex: 0,25+mm shim 2,85
But here it goes:
The shim sizes are sometimes printed on the shim itself(factory print)
But when it says 275 i measure 2,80, when i then measure my own feeler gauge(newly bought) it still says 0,05mm when i put a 0,05mm in it.
Is it possible that shims widen up during use??
I wanna hit the clearance of 0,12-0,17 on every valve.
My bike runned like crap in the high rpm range, these clearances can verify these issues. I thought the carbs were buggered but nevertheless the valves needed adjustment.
But back to the wider shim sizes, is it possible that i measured wrong? I measured them with cleaned surfaces and multiple times with cleaning in between.
My meter has about a 0,02+- tolerance in MM.
but is my aiming that 0,12-0,17 is good enough for the bike to run like the rocket that it used to be, and do i need to buy new shims or can i exchange them between eachother(especially in a scenario of cyl 4?
I want to ride the beast again this summer.
Measured everything with an ambient of +-10 celsius outside temp.
I finally got around and started the valve clearance job. But here comes a vague situation.
I got a micrometer and also a feeler gauge. When i measure the feeler gauge with the micrometer it gets to the appropriate measurement( so 0,05mm is 0,05mm+-0,01mm)
I started measuring my valve clearances and here are the results:
cyl 1:
left(with you sitting in the seat of the bike)
In: 0,08mm Shim 2,94
ex: 0,10-0,15mm
Right:
in: 0,08mm 2,93
ex: 0,15-0,25
cyl 2:
left:
in: 0,12mm
ex: 0,12mm
right:
in:0,15-0,20 shim 2,78
ex: 0,12mm
cyl 3:
left:
in: 0,10-0,15(about 0,12)
ex: 0,12mm
Right
in: 0,08 shim: 2,85
ex:0,12
cyl 4:
left:
in: less then 0,05mm shim 2,90
ex: 0,17 shim 2,86
right:
in: less then 0,05mm shim 2,90
ex: 0,25+mm shim 2,85
But here it goes:
The shim sizes are sometimes printed on the shim itself(factory print)
But when it says 275 i measure 2,80, when i then measure my own feeler gauge(newly bought) it still says 0,05mm when i put a 0,05mm in it.
Is it possible that shims widen up during use??
I wanna hit the clearance of 0,12-0,17 on every valve.
My bike runned like crap in the high rpm range, these clearances can verify these issues. I thought the carbs were buggered but nevertheless the valves needed adjustment.
But back to the wider shim sizes, is it possible that i measured wrong? I measured them with cleaned surfaces and multiple times with cleaning in between.
My meter has about a 0,02+- tolerance in MM.
but is my aiming that 0,12-0,17 is good enough for the bike to run like the rocket that it used to be, and do i need to buy new shims or can i exchange them between eachother(especially in a scenario of cyl 4?
I want to ride the beast again this summer.
Measured everything with an ambient of +-10 celsius outside temp.