Noise After Cam Chain Tensioner Replacement
#11
08-13-2014, 04:16 PM
Do a quick search on this forum and you will see pics from people with it happening on same year bikes at less mileage. This is a very common issue and seems to happen at around 30k+ miles on the bikes with the upgraded tensioners.
#12
08-13-2014, 04:24 PM
Seasoned HDF Member
#14
08-13-2014, 04:42 PM
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#15
08-13-2014, 06:46 PM
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#16
08-13-2014, 08:15 PM
made me laugh another clown that knows **** all about motors, ive know off variable cam shaft timing,,,, BUT never variable crankshaft timing ,, MUST be only only on **** puppets bikes
:icon_ banana:
#17
08-14-2014, 11:52 PM
#18
08-15-2014, 07:54 AM
The hydraulic ones fail too, mine did. It started cracking and breaking up so same deal as the pre-2007 ones. My mechanic buddy said they just don't fail as much but they still do so you have to replace them every 30k or so and if you have the old style check at least every 10k because those things can and will fail without any warning at all then clog up your oil pump.
#19
08-15-2014, 08:01 AM
Seasoned HDF Member
No they just replace them with hydraulic ones that fail later, like every 30k miles instead of sooner. To get gears you have to check the crank runout and if it is outside some insanely tight value then you have to send it off to get it machined down to the correct value.
The hydraulic ones fail too, mine did. It started cracking and breaking up so same deal as the pre-2007 ones. My mechanic buddy said they just don't fail as much but they still do so you have to replace them every 30k or so and if you have the old style check at least every 10k because those things can and will fail without any warning at all then clog up your oil pump.
The hydraulic ones fail too, mine did. It started cracking and breaking up so same deal as the pre-2007 ones. My mechanic buddy said they just don't fail as much but they still do so you have to replace them every 30k or so and if you have the old style check at least every 10k because those things can and will fail without any warning at all then clog up your oil pump.
#20
08-15-2014, 08:04 AM
Ultimate HDF Member
I was thinking the same thing myself, but I emailed a buddy last night about it who owns a bike shop. His reply was that it can happen and has to him before. Pardon my over simplifying here, I don't know enough about it to get into specifics so am explaining it how he explained it to me.
Apparently if there are other issues particularly in the cam chain then replacing the tensioners (and the other parts in there like I had done) and fixing the tension on those chains can adjust the angle of the piston in the cylinder very slightly. Apparently with the shitty run out (still reading up on this part) on these engines that tiny of a change combined can cause the "piston slap" which will start scoring the insides of the cylinders. He said he has seen it on a few bikes after doing the tensioner replacement or upgrade and is usually associated with people abusing their bikes like the previous owner did to mine.
Apparently if there are other issues particularly in the cam chain then replacing the tensioners (and the other parts in there like I had done) and fixing the tension on those chains can adjust the angle of the piston in the cylinder very slightly. Apparently with the shitty run out (still reading up on this part) on these engines that tiny of a change combined can cause the "piston slap" which will start scoring the insides of the cylinders. He said he has seen it on a few bikes after doing the tensioner replacement or upgrade and is usually associated with people abusing their bikes like the previous owner did to mine.
So let me get this straight....This guy says replacing the cam tensioners caused piston slap?
And, You believe him?
My recommendation is that you find a shop that isn't trying to rip you off!