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kb228
4/13/2018 3:28am
4/13/2018 3:28am
Have a question on the specified valve clearance for my hotcams. My bike is an 09 kx450f.
Hotcams specifies .15mm for my exhaust valves. My service manual is .17-.22mm.
There wasnt this kind of conflict on the kx250 i built. Just wondering if anyone else has had this issue and how they dealt with it. Is hotcams spec good? My bike starts in 3 kicks cold and seems to run fine.
Hotcams specifies .15mm for my exhaust valves. My service manual is .17-.22mm.
There wasnt this kind of conflict on the kx250 i built. Just wondering if anyone else has had this issue and how they dealt with it. Is hotcams spec good? My bike starts in 3 kicks cold and seems to run fine.
Paw Paw
The Shop
The intakes are the worst , but the exhaust can do the same thing.
Paw Paw
Paw Paw
Spec on the exhaust cams: .006” and thats the clearance i have.
Spec on intakes is .004” and i have .0035” on both. Going down 1 shim size(.05mm) will give me .006” clearance.
Did you also install a new cam chain?
Paw Paw
Intake clearance from hotcams should be .10mm.
Ill go back to .006”(.15mm) clearance on the intakes and see how that goes. If i still hear noise ill make a video of it
Went ahead and moved the intakes back to .006” clearance. I left the exhaust cams alone after the adjustment from .008 to .006.
Bike runs good. No noises. Ill know for sure on saturday when i ride.
All ive got left now is to rebuild the fuel pump and will be on my way i think. Thanks for the help pawpaw. Always killin it
Paw Paw
Im going to adjust again and see what happens.
Paw Paw
Pit Row
I replaced the fuel pump with a spare i had. Intake valves were tight so i adjusted those.
Got the bike running but it only ran woth the high idle knob out.
I think its electrical. Probably coolant temp sensor.
FYI: Room temp feel is not that same as a good 24 hour cool down.
Paw Paw
Too bad harbor freight was out of ultrasonic cleaners
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