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kfx450r

450r Head Trouble

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Well, in process of installing cam, all the clearances were in check timing was on on a new hotcam stage 2 and I started it up and the engine is much louder and i hear a littl rattling noise now and it dies after idling for like 3 minutes. Could this be a bent valve? I really dont wanna take off the head right now.

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Well, in process of installing cam, all the clearances were in check timing was on on a new hotcam stage 2 and I started it up and the engine is much louder and i hear a littl rattling noise now and it dies after idling for like 3 minutes. Could this be a bent valve? I really dont wanna take off the head right now.

i would say your valve clearances are set wrong... are you sure you are checking your clearances correctly? 450r honda?

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Well, in process of installing cam, all the clearances were in check timing was on on a new hotcam stage 2 and I started it up and the engine is much louder and i hear a littl rattling noise now and it dies after idling for like 3 minutes. Could this be a bent valve? I really dont wanna take off the head right now.

Sounds like your valves are rattling around. Check those clearances.

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thanks for the responses, yeah i checked them right and they were in spec the first time i checked them and i just checked them again today though and 2 are off by .001 away from the .001 tolerence, which im saying is .002 tighter than spec so Im going to reshim, my cam sprocket bolts were loose and 1 was hanging half way out even tho i loctited them.

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where've you been?

Where? Workin on my bike for the last few weeks and school and work Im usually always on the 450r.org site getting answers to all my engine problems. Going pick up the shims i need tomorrow and see if it all goes together good.

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