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440's necessary
10-18-2005, 09:06 PM
I was wondering what the valve clearances were for a 450r with a hrc kit. My quad is starting to run funny.
WOracing
10-19-2005, 11:41 AM
valve clearences should be in your manual..
depotman19
10-21-2005, 11:28 AM
I believe it is .006 inches on the intake side and .011 inches for the exhaust side. Decompressor is .011 inches on the exhaust side + .010 for the decompressor for a total of .021 inches.

Good luck

Jake.....
44oEX
10-21-2005, 11:36 AM
well I can see it being that big..it's on .004 I and .005 E on a EX...the R should be even tigher with the cam riding right on the intake valves
depotman19
10-21-2005, 12:05 PM
Yea these are the specs for the Hrc cam. The stock cam is going to have different specs. I dont believe they list the Hrc cam specs in the manual. The manual only lists the specs for the stock cam.
440's necessary
10-22-2005, 06:16 AM
Thanks for all your help guys/girls.
ATC350X 85
10-22-2005, 04:52 PM
the valve clearances are even on the little sticker on the front of the frame. It is .006 intake and .011 exhaust and decompresspr clearance is the measured clearance of the right side exhaust valve plus .006
StuckInTheMud
10-22-2005, 09:02 PM
sorry for stealing your thread but does anyone know what the stock valve shim sizes are
TampaBoy813
10-23-2005, 10:02 AM
Originally posted by StuckInTheMud
sorry for stealing your thread but does anyone know what the stock valve shim sizes are you have to take it out and check it...they might not all be the same from honda...
TampaBoy813
10-23-2005, 10:03 AM
Originally posted by depotman19
Yea these are the specs for the Hrc cam. The stock cam is going to have different specs. I dont believe they list the Hrc cam specs in the manual. The manual only lists the specs for the stock cam. hMmmm I have a stock cam but would think the specs are the same you just have to shim to get the same tolerances..