• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!

    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

Front End Vibrations

wooolffy

Member
Offline
On my first outing since buying my six, I am noticing vibration, or wheel balance is off. It feels like it is from both wheels as car seems too vibrate up front. Rear end and wheels feel okay for vibration. This happens after fifty miles per hour and up. I have a 76 TR6 with no special work done to her, other than a header and monza exhaust. Any suggestions for possible areas to look at?
 
6. Tires out of round or interior belts parted due the car having sat in the tires for years?
7. rims out of true? Remove tires and spin the rims up on a wheel balancer to see if they are wobblers
 
Good suggestions so far!

A few other possibilities:

8. The easiest one to fix... Incorrect tire pressure in any tire on the car - front or rear - particularly if one tire is significantly different than the others. (Note, TR6 original tire pressure info may still be current, but older car tire pressure info was often for bias ply tires and modern radials will likely need different pressure than the original tires, so owner's manuals and repair manual info might be incorrect).
9. Mismatched tires.
10a. Rack & pinion mountings worn out/loose.
10b. Wear within the R&P unit.
11. Steering column flex joints worn/loose.
12. Occasionally, unbalanced drive shafts and/or rear axles show up in the steering (but I think this is unusual for a TR).

Personally, I'd check #3, 4, 10 & 11 on a car that's had out of balance tires (or any of the other issues) on it for a while... Seems to me vibrations you can feel wiil often cause other parts to wear faster.

/ubbthreads/images/graemlins/cheers.gif
 
[ QUOTE ]
...Occasionally, unbalanced drive shafts and/or rear axles show up in the steering (but I think this is unusual for a TR)....

[/ QUOTE ]Somewhat parallel to that, I had what I thought was a pretty serious vibration problem in the rear end of my Herald. Went on for a couple months until I happened to be checking something else up front and discovered a bad front wheel bearing. Fixed that, and the vibration went away!
 
D'oh!

Andy is right, front wheel bearing looseness - either due to mis-adjustment or wear - is also another possible cause and might be a really easy fix.

One possible cause of this, replacement grease seals available today way too thick, and that can cause mis-adjustment. The thicker seal can fool you into thinking the hub is properly tightened, when it's really not. (I trim the thickness of the seals with a razor blade, removing about half so that the seal stands just slightly proud of the edge of the metal carrier/shell.)

/ubbthreads/images/graemlins/cheers.gif
 
Back
Top