Valve guid/Valve stem clearance?

offroadeast said:

(05 YZF450). I know that after the new guides are installed they need to be reamed to the proper size. How much bigger should the opening in the guide be compared to the valve stem diameter????

Also, is there drawings of valve shapes available anywhere(I am going to use Kibblewhite SS valves) to cut the valve seats to?

QUOTE]


Intake. 0.010 - 0.037 mm
.0004 - .0015 in.
Wear limit. 0.08 mm .003 in.

Exhaust. 0.025 - 0.052 mm
.001 - .002 in.
Wear limit. 0.10mm .004 in.

Those figures are for a YZF426 but, should be in the ballpark.

Not sure where to find drawings of the valves but the 'stock size' Kibblewhite valves are the same shape and size as the stock valves.

Click to expand...