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bh2285
05-16-2006, 05:36 PM
Ok, I was told that I have slop in my cam chain...But I dont know how to make sure I do before I go and put ina HD chain...Can you guys give me some tips on how i would check to see if I have to much slop in the chain there for causing a rattle right as i left of the throttle? It kind of sounds like a exhaust leak kind of...Anyone know where I could find a how-to on changing the cam chain? Also you can see my mods in my sig.
bh2285
05-16-2006, 11:31 PM
no one can help?
Chino886
05-17-2006, 10:30 AM
Originally posted by bh2285
no one can help?

Hey BH, from what you posted in another thread about your "tap" problem, it sounds like you have "slop" in the cam chain. I am guessing since you decked the head to raise compression, this also brought the cam closer to the bottom end......I would talk to whomever decked your head to find out what how much.

I hope that make sense.

I am no expert by any means, just my $.02!

That same tap I had when I rebuilt my 400EX.
underpowered
05-17-2006, 10:35 AM
Originally posted by bh2285
no one can help?

one way to check your slack is too take the bolts out of the tensioner and see how far back tehy gold pressure on it. should push the tensioner out a little bit. it it barely moves or does not move at all you need a new chain. but like chino said, your decked head could be helping this problem occur.
bh2285
05-17-2006, 02:04 PM
Its seems that the tensioner is fully retracted when I take it out while holding it. That is what your talking about right?

It has been decked .025 on the head and .025 on the jug.
Chino886
05-17-2006, 02:08 PM
Originally posted by bh2285
Its seems that the tensioner is fully retracted when I take it out while holding it. That is what your talking about right?

It has been decked .025 on the head and .025 on the jug.

Well, if you deck it .025 + .025 and the chain stretches even a little bit, then you could have that "slop" in your chain.

I would suggest trying a 02 crf450 cam chain, that is the cheapest thing you can do to try to fix the prob.
bh2285
05-17-2006, 02:12 PM
Should I just buy one of those HD chains off ebay?

That are 50 shipped?


Can you also read the post I put in the post about race gas tell me what you think?Thanks
Chino886
05-17-2006, 02:13 PM
Originally posted by bh2285
Should I just buy one of those HD chains off ebay?

That are 50 shipped?

Call Colby at C & D Racing, 402-614-2508
bh2285
05-17-2006, 02:16 PM
Is that you? I do see that you are in KC...What can he do for me?
patches85
05-17-2006, 02:16 PM
Service Honda has crf450 chains for like $35 shipped.That is what you would buy on ebay for $50! Same length, a link wider than stock. A new oem chain for a 400ex is like $60!
Chino886
05-17-2006, 02:18 PM
Originally posted by bh2285
Is that you? I do see that you are in KC...What can he do for me?

NO, I am Dave, I am in KC.

Colby is a site sponsor and also has a shop that sells part for quads. I think his price is cheaper than service honda if I remember correctly.
bh2285
05-17-2006, 02:19 PM
ah, I see well the noise is for sure coing from the right side of the motor...What did your noise sound like? Mine kind of sounds like an exhaust leak to me...but its for sure not i wish is was that simple.
Chino886
05-17-2006, 02:20 PM
Originally posted by bh2285
ah, I see well the noise is for sure coing from the right side of the motor...What did your noise sound like? Mine kind of sounds like an exhaust leak to me...but its for sure not i wish is was that simple.

It sounded like a "tapping" that varied at different RPMs.....
bh2285
05-17-2006, 02:23 PM
see my noise you can not hear it while reving olny right as you let of the throttle for a sec then it goes away and idles fine...Here i took a video of it awhile ago its hard to hear but you can hear it if you listen...

http://www.putfile.com/bh2285
bh2285
05-17-2006, 02:28 PM
If you watch my thumb in the 2nd video right as i let off you can hear it....
Chino886
05-17-2006, 02:31 PM
I will listen to it later and see if I can hear it.
bh2285
05-17-2006, 06:45 PM
Can I use any year 450 chain? Let me know what you guys think after you listen to that, Thanks.
bh2285
05-17-2006, 08:37 PM
Up anyone? Please watch the video I posted and tell me what you think.
Chino886
05-18-2006, 06:04 AM
You need a 2002 CRF450 Cam Chain......other years will not work.

I watched it last night and forgot to post, I still think it might be the cam chain. If that does not fix it, it was only $35 and some time in your motor, a lot cheaper then a lot of other things.