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Old 11-14-2012, 04:00 PM   #1
YOUNZ OP
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Important Harley twin cam info

I was over at the J&P Cycles web site, checking on a sprocket and saw an important article regarding the twin cam bikes.
Primarily, about the cam chain tensioners failing way to soon and trashing the engine.
Mostly, not covered under warranty, according to the owners comments!
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Old 11-14-2012, 04:06 PM   #2
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Quote:
Originally Posted by YOUNZ View Post
I was over at the J&P Cycles web site, checking on a sprocket and saw an important article regarding the twin cam bikes.
Primarily, about the cam chain tensioners failing way to soon and trashing the engine.
Mostly, not covered under warranty, according to the owners comments!
You're at least 5 years late on the news bud
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Old 11-14-2012, 04:35 PM   #3
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I don't own a Harley, it was posted on the site today. Apparently it's still a problem, dude.
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Old 11-14-2012, 04:50 PM   #4
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I'm not 100% sure but I think it mainly a problem for Twin-Cam motors prior to 08,
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Old 11-14-2012, 05:06 PM   #5
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THAT IS SO 2006. Late to the party again.
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Old 11-14-2012, 05:09 PM   #6
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Quote:
Originally Posted by EricD10563 View Post
I'm not 100% sure but I think it mainly a problem for Twin-Cam motors prior to 08,
I'm sorry to say the cam chain problem has been going on since the early 90's.
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Old 11-14-2012, 05:22 PM   #7
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Originally Posted by mitchxout View Post
I'm sorry to say the cam chain problem has been going on since the early 90's.
They didn't have chains in the early nineties.....'99 was the first year for the modern twin cam.
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Old 11-14-2012, 05:29 PM   #8
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They didn't have chains in the early nineties.....'99 was the first year for the modern twin cam.
Evo's had chains.
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Old 11-14-2012, 05:47 PM   #9
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Originally Posted by mitchxout View Post
Evo's had chains.
haha, cam chains? not
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Old 11-14-2012, 05:49 PM   #10
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Just so you can be all caught up, there is also a whole lot of inner cam bearings that go bad. This usually destroys the engine. (not re-buildable). Loose rollers inside the case is a bad thing, for sure.

A gear drive cam set up eliminates the chain tensioner thing but it must be difficult to fit up correctly because a lot of those have a loud whine which may be from the fit of the gears, I'm not sure. There is a much better bearing available for the inner end of the cams too.

A good practice is to pop off the timing cover and have a real close look at around 25000 miles.
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Old 11-14-2012, 07:25 PM   #11
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Crank run out is the problem with gear drive. Word is 09 up hyd tensioners are the way to go.
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Old 11-14-2012, 07:35 PM   #12
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Originally Posted by scapegoat View Post
Crank run out is the problem with gear drive. Word is 09 up hyd tensioners are the way to go.
06 on the Dyna's 07 on all the twin cams.

If you warmed the bike up, never got on it hard until completely warmed up and did not lug the engine (the engineers want you to cruise at 2900 to 3100 rpm's) then the old tensioners would last 80k plus miles.

The ones that ran into problems were the throttle blippers and those that thought they should be cruising down the highway at 2200 RPM's. They were having issues at around 25k miles.
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Old 11-14-2012, 07:40 PM   #13
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So,I guess I'll keep my Honda.
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Old 11-14-2012, 08:26 PM   #14
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Old 11-14-2012, 08:30 PM   #15
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Originally Posted by DAKEZ View Post
THAT IS SO 2006. Late to the party again.


When a manufacturer's biggest efforts go into "nostalgia", there's no surprise in that.




What could have been, and never got a fair chance.
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