Valve ticking

[trx400exrider14]

i rebuilt my fourwheeler and we adjusted the valves and everything,they stopped ticking for a little bit,but they start ticking again within a couple hours. whats the problem?

[Red_250EX_Rider]

Its just the nature of the beast...Most 400's have that noise.

[trx400exrider14]

its normal to tick pretty loud? with the hotcam i mean

[CJM]

Very normal, specially with the hotcam.

Mine was rather quiet, then I drowned it in a lake (dont ask!), now I had the topend apart and checked everything to be sure, put it back together and ticks louder.

[trx400exrider14]

alright,and im guessing with an 11:1,stage 2 hotcam,and a pipe,airlid on,i think 1000 elevation,i can run a 160 main and a 42 pilot? with 93 gas

[CJM]

Should be able too, might need to do 165-thats where I would start and go down from there.

[trx400exrider14]

im gettin both,and a 40 and a 42,trying both,will i need to adjust the fuel air mixture any you think?

[CJM]

Probably gonna have to screw the air/fuel screw in, the bigger pilots gonna richen it up for you now. Id skip the 40 and just do a 42.

[trx400exrider14]

COuld valves tick from maybe running to lean?

[CJM]

Originally posted by trx400exrider14
COuld valves tick from maybe running to lean?

Not likely. The valves on these engines tick, just the nature of thier design. Install a hotcam and the valves tick louder b/c of how much the cam lets them open/close and the duration.

Its nothing to worry about.