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View Full Version : Hi I'm paul i have a 1984 200x with valve train noise



Paul G
08-13-2018, 09:03 PM
I have rebuilt the top end with a 67 mm piston and a

reground cam from web cams. One stage below RACING. I adjust valves to factory specs still have noise. Is it common to have noise with a bigger cam.

shortline10
08-13-2018, 09:20 PM
Your cam journals are probably worn .
You can run a straight weight 40 or 50 weight oil which should help .
Did you replace the cam chain and set the tension ?

Paul G
08-13-2018, 09:58 PM
Yes replaced chain and tensioner. Not hearing chain noise just valve tick

Paul G
08-13-2018, 10:05 PM
Cam journals are tight. runs great noisy at idle

Paul G
08-13-2018, 10:44 PM
Thanks for the information. you or anyone else think of something I'm missing thanks for the reply

knappyfeet
08-14-2018, 01:52 AM
I adjust valves to factory specs still have noise. Is it common to have noise with a bigger cam.


What kind of noise? Rocker/chain/valve/etc? Here's a video of my noise. sound anything like that?

https://youtu.be/fkXQYeZ0EH8

Paul G
08-14-2018, 07:22 PM
Thanks for the reply. Mine does sound like yours. Are you running a bigger cam and valve springs. I just ordered a new cam bearing bushing. Clean bike you have.

Paul G
08-14-2018, 07:46 PM
Oh and I do believe it is rocker noise.

knappyfeet
08-15-2018, 12:57 AM
Thanks for the reply. Mine does sound like yours. Are you running a bigger cam and valve springs. I just ordered a new cam bearing bushing. Clean bike you have.

In my case I chalked it up to the rockers being too loosey goosey.

Everything was stock. Keep in mind these 200X engines have low oil pressure so the valveline seems to suffer the most.

Paul G
08-15-2018, 09:18 PM
Ok! think I'll put the new cam bushing in. there was a tinny bit of slop in it. And start from the beginning maybe run some 20 /50 wt

Paul G
08-17-2018, 10:08 PM
254053
254054 going to paint while i wait for engine parts.

Paul G
08-17-2018, 10:16 PM
254055 i bought this atc converted to a quad. A couple years ago. Never seen or heard of any other.

Paul G
08-17-2018, 10:22 PM
254056 this is what a yamahonki looks like. Or what my Sons looks like.

350for350
08-19-2018, 06:50 PM
Well at least I can see where the mane comes from. What trike was it based off of?

Paul G
08-22-2018, 10:32 PM
Honda 200x frame with a suzuki quad racer 250 front end. Yamaha tri z 250 motor. I think the motor was built for racing it gets up and goes.

Paul G
09-02-2018, 10:59 PM
Got my 200x back together re adjusted the valves. Sounds better with the new cam bushing still have noise. But a lot smoother with the 40 wt oil. Thanks for all the information. :w00t: