Ok, this has been bugging me for long enough

Have a nice little vibration around 4000 rpm and it’s gone by around 5000. Happens in gear or in neutral. Moving or not.

Stuff that i have.... Poly tranny mount, and tq arm mount.
Street Twin with a steel flywheel.


What can be causing the damn vibration? I don’t think it can be a flywheel? Everything is nice and smooth till 4k and then it vibrates and it’s gone by around 5k. What should i start checking?

The vibration began after I put the street twin in.

Marcin

 

ttt

 

Have you checked your motor mounts?

 

hmm good idea

Will i be able to tell just by looking at them?
Marcin

 

Usually if they are bad they will be distorted badly or ripped.

 

Marcin,
I have the same thing ( after the ST install), and it's been bugging me also......I have a new tranny mount, new u-joints( rotated shaft 180*), and even put in a new tail-shaft bushing in , and its still there

I'm thinking it could be the Street Twin

 

did you check the motor mounts?

i am going to check mine in few....i hope thats the problem.

 

I think when I was checking every other thing .... that was on my list .... but I'm going to double check the mounts tomorrow to be sure. ( I even took a look at the balancer, and that looked good ) I keep you posted .

 

Well, what did you come up with?

 

they look fine....What should we do?

 

Did you look at your harmonic balancer?

 

Checked the motor mounts, and they look good......I had looked at my balancer before and it looked good as well.........

 

i am fixin to call them..will post results in a min.
blah...they are closed til the 8th due to some show.

 

ok here is the solution to the problem. I finally got in touch with Mcleod and their tech told me that i should turn the pressureplate 2 bolts over to fix the problem or to take the whole assembly and get it rebalanced. He said turining the pressure plate over 2 bolts will most likely fix the problem thou.

Marcin

 

Make sure you let us know how that works for you.