Red head TXC 310 engine noise

...did I call that or what?

Was there a conclusion? I have the same noise and cam tensioner is tight, cam bearings look OK and it just sounds like cam chain slap. I am scared to rip into the motor for no reason. I have a 2011 TE 250. Struggled with it from day 1. JD Tuner, 12 hole injector and power up. Still runs like crap.

Anything else for the slap noise? I just thought the engine noise drowned out the "cam chain" noise.

Thanks

No response I guess.

I can tell you that setting these motors with a sub-2000 rpm idle makes them stall like crazy.

Your 2011 TE250 runs like crap with a 12pt?

My 2010 TE250 runs great with a 4pt and a 2100 rpm idle.
Runs just as good as my 2012 TXC310 with 12pt. A little less snap on the bottom but I can ride them back to back and the 310 stalls more than the 250.

hey there, ive got a 2011 te310 and ive got a similar timing chain slap noise. just got a new factory timing chain tensioner on the way. have you tried replacing yours yet? if so, did it work?

Giving this thread a bump. My 2012 TE250 is making this noise as well. The bike runs great, but the sound is disconcerting.

I gave up and let it idle high. Higher idle than most bikes. Maybe every other bike I have experience with including most Japanese 250 MXers. I've put a ton of time on it this summer and it's still the same and works great. These just have a crappy decompression system. I'm convinced it's from the decompressor.

I have no tach so never know the revs. My bike doesn't make that noise (and I have owned many inline 4's with slapping cam chains). I would concur that probably the decompressor. I idle mine seemingly like any other bike which usually idle about 1,200 rpms. I idle more at elevation is all to keep from flame out. Maybe I idle higher. If they gave me a tach I might know

Thanks for the response. I'll bump the idle and see what happens. Really enjoying the bike so far. Reputation is that the bike is problematic or at least fussy, but so far it's been reliable.

I put in the updated starter gears and it has been great. Get used to high idle and have fun!

Just for grins, I looked up the idle speed of a small handful of modern race bikes (RM-Z 250, CRF450R, KTM 250 SX-F, CRF150R!) and they were all around 2000rpms. The 250 SX-F was the highest at 2150-2250rpms.

The 1950rpm idle spec for the husky is actually a bit on the low side for bikes in this category. I thought I read somewhere that the TC is 2150rpms but I couldn't find the reference. 2000rpms or a little more is fine... ...and perfectly normal.