Cam chain tensioners

Ernest Montague afm199 at
Sun May 17 16:44:38 PDT 2009

not really making a defense here, just used them both.  The OEM keeps 
the chain really really taut, the manual does not.  And if the entire 
length of the cam chain follower is bathed in oil it's not going to 
really get much hotter at all.  However I know from experience that a 
too tight rear chain will make it harder to turn the rear wheel than a 
loose one.
On May 17, 2009, at 3:49 PM, Beth wrote:

> On Sun, May 17, 2009 at 3:33 PM, Ernest Montague 
> <afm199 at> wrote:
>> Not when the heat is carried off in steel and oil and dissipated by 
>> the
>> radiator
> It's a given that there is friction generated by the cam chain rubbing
> against the teeth of the cam chain sprockets and guides. The question
> is how much and is there a significant difference between the tension
> the OEM automatic cam chain tensioner puts on the chain versus a
> properly configured manual cam chain tensioner. We're not talking
> about a complicated part of the engine.
> It's an interesting thought experiment, barring credible empirical
> evidence. And, yes, I question the evidence seeing that the person who
> is trying to sell you the part is making the HP claims w/o conclusive
> proof. No offense intended toward all parties involved. I'm interested
> in what's the truth, not what other people say.
> -Beth

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