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engine knock
Posted: Thu Jul 07, 2016 2:16 pm
by MIKE DAVIS
anyone have experience with a loud,heavy,knock. Sounds like it's coming from the bottom end. Not a double-knock like a con-rod.Oil pressure light not on. Seems to run fine otherwise.
Re: engine knock
Posted: Thu Jul 07, 2016 4:30 pm
by FalldownPhil
Not a good noise :-(
Could be a bent rod with the piston skirt hitting the crank.
Best,
Phil
Re: engine knock
Posted: Thu Jul 07, 2016 5:16 pm
by MIKE DAVIS
the odd thing is that it ran just fine on an outing. Then I parked it and when I started it back up it was making this noise. I hadn't ridden it hard at all maybe 6000rpm on the first outing.
Re: engine knock
Posted: Thu Jul 07, 2016 5:19 pm
by MIKE DAVIS
I'm putting an MTC balanced crank and rod setup in it since I have to tear it down anyway. Just wondering?
Re: engine knock
Posted: Thu Jul 07, 2016 7:47 pm
by steve murdoch icoa #5322
If i had an MTC crank and rod set-up on the shelf i would be hearing non-existent engine noises.
Please report back when you do get into the engine.
Re: engine knock
Posted: Thu Jul 07, 2016 11:58 pm
by NobleHops
steve murdoch icoa #5322 wrote:If i had an MTC crank and rod set-up on the shelf i would be hearing non-existent engine noises.
Please report back when you do get into the engine.
Steve made me spit out my Scotch!
Sorry about your bike, but it sounds like you have your solution in hand.
N.
Re: engine knock
Posted: Fri Jul 08, 2016 5:16 pm
by daves79x
That's how many hydro locks happen. Did you turn off your gas when you parked it? Remove 1 & 6 plugs and measure distance to each piston. Bent rod will show up very obviously.
Dave