Harsh vibration between 5/5.5 rpm


robthedoc

civic disobedience
Joined
Feb 14, 2013
Messages
1,533
Guys I've started to get a harsh vibration when going up and down the revs. It's between 5000 and 5500 rpm. Can feel it through the whole car.

I'm going to check all mounts etc are tight but worries this might be the beginning of the end for my box.

Anyone had similar issues?
 
is it the same rev range in all gears that it happens or just 5th. could be down to wheel balance or the driveshafts? engine mounts good?
 
You still on stock shafts Rob? As above, if it's happening at a certain speed and not every gear could be a shaft.
 
I'm on insane shafts 500 guys. Less than a year old. Does happen in every gear at any speed. Just when I pass through that rev range it's very noticeable. Will get a better look later on at mounts and stuff but knowing my luck...
 
Possibly jesse, i cant test stationary as my launch control can't be turned off however managed to roll down a hill in neutral and it's still there when no gear is engauged. tried again in neutral at about 70 and again still there. Only thing I didn't do was try with clutch down. I have been getting a tiny squeal from the clutch/bearing when pulling away slowly. Will try with clutch down when rolling to see if it is still there tomorrow.
 
Lesser evil is the clutch isn't it.
It being dependant on engine speed rather than road speed would suggest it's bolted to the engine or input shaft in the box
 
Definitely man but... if the box is out I'd be tempted to do a refresh on it. New bearings, syncros, seals. Would also be good to find out what diff is actually in there. I've got the rpc stage 5 to go in if needs be.
 
Yeah I'm hoping 1 or more of the little "fingers" has bust on your pressure plate or something.
Oil pressure etc is ok the whole time?
 
Oil pressures good. Gonna spend some time tomorrow and see if I can nail it down. Got a few other things needing doing so will spend a few hours on it. Then I've got another ek9 in for engine rebuild :))
 
Back
Top