Valve shims conundrum

[trophied]

Shim and bucket is a load of c**p that excuses a lack of interest in innovation in valvetrains in motorcycles.  Imagine the hand wringing that would occur if automobiles had to go in for service every 20K miles to have the valves checked, OMG soccer moms would go ballistic!

[STJIM]

Originally Posted by MidnightSE

My bad, I mixed up SAE and Metric.
It is not .10 mm it is .10 inches which is .254mm. Which is still below min spec of .275mm
So to bring it back up to max clearance of .325 I will need -070mm shim. (.325-.254)
Given existing shim is 2.30mm, I need to subtract .070mm from it. So the shim of 2.25 mm would bring the clearance closer to .325mm clearance.

Does it sound plausible?

NO !!  You had it right the first time.   .10 inch is a ridiculously wide clearance for any engine.  Sorry to be so blunt.

BTW, Cheers...

I bought my shims at  https://www.rockymountainatvmc.com/parts/pro-x-valve-shim-p?v=11648

They don't have a listing for a Triumph Trophy but the Kawasaki shims are the same diameter( 9.48 mm )  and that's what I used when I did my valve adjust.  Less than 2 bucks each and they come in .025 mm increments.

I have to emphasize they end result of this whole adjustment procedure depends on besides picking the correct new shim thickness AND how accurate the original clearance measurements is done before pulling the cams.  The feeler gauges I used included a .0005 feeler gauge and I use a "GO'  and "NO GO" method to measure the clearances.  I calculated the estimated actual measurement as the average of the "GO" and "NO GO" thicknesses.

I set my exhaust clearances at the high end of the range and the intakes in the middle.  Worked out pretty good and I measured the clearances after I re-installed the cams just to be on the safe side.

[trophied]

Exactly.  Takes a bit of time.  Good source for the shims, the .025 increment is very helpful.  Anywhere else they're only in .05 increments and if you buy the Trophy shims they're $9 each and the local to me Kawasaki dealer charges $16 each, and when I asked if they stocked them I was told they never stock valve shims.  Neither did the dealer that did the valves on my '13 the first time they were done.  Precisely why it took 4 days to get my major service done, I was even told they had to wait for shims.  So if dealers don't want to stock a butt load of shims, then your service work will always take longer than you think. 

[MidnightSE]

Originally Posted by STJIM

I bought my shims at  https://www.rockymountainatvmc.com/parts/pro-x-valve-shim-p?v=11648

They don't have a listing for a Triumph Trophy but the Kawasaki shims are the same diameter( 9.48 mm )  and that's what I used when I did my valve adjust.  Less than 2 bucks each and they come in .025 mm increments.

I have to emphasize they end result of this whole adjustment procedure depends on besides picking the correct new shim thickness AND how accurate the original clearance measurements is done before pulling the cams.  The feeler gauges I used included a .0005 feeler gauge and I use a "GO'  and "NO GO" method to measure the clearances.  I calculated the estimated actual measurement as the average of the "GO" and "NO GO" thicknesses.

I set my exhaust clearances at the high end of the range and the intakes in the middle.  Worked out pretty good and I measured the clearances after I re-installed the cams just to be on the safe side.

SAE system sucks.
It was not .10inch, rather .010 inch which is .254mm.

Jeremy Clarkson was right where he once said. In Europe everything measured in mm, but in America everything measured in feet.

Big thanks for the link where to get shims. I've searched hi and low for smaller increments shims to no avail.