Re: slight vibration

[Glenn Merrell <gmerrel@domain.elided>]

Hello Richard,
    This vibration, do you feel it in the steering wheel, seat-of-the-pants,
or through the pedals?  Steering wheel will be something out of alignment,
seat of the pants is giong to be drivetrain, pedals...well, anywhere.  If
the vibration only occurs from rest to 5 -10 mph and is very slight, that
tells me engine/transmission source. You might want to check the easy things
first, like the fan and torquatrol for any noticable play, then take a hard
look at motor and transmission mounts, then drive shaft and axle shaft
u-joints.  If you see a u-joint throwing any grease or wear, could be a sign
of trouble.
Judder:  When you did all of this suspension work, did you have the brake
rotors and drums turned before you replaced the brake pads and shoes?  The
"judder" is usually out of round rotors and drums.  Solution is to replace
the pads and shoes AND have the Rotors and drums turned.  Also, if the rear
brake slave cylinder is not pushing out of both sides (ie, one piston side
is seized), the shoes are not being expanded equally and will cause a
"judder", as might be happening when you release and reapply the brake.

Regards,
Glenn Merrell
"Keep Your Stag Cool, Install a NEW Composite Cowl Today"

See it at the site below:
http://pw1.netcom.com/~gmerrel/stagcowl001.html

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membership inquiry's to:
Mike Wattam <101714.1343@domain.elided>



Richard Hudson wrote:

> Dear All
>
> 1. My Stag suffers from a very slight vibration when moving from rest.
> It only occurs for 3-4 seconds and is very subtle.. The vibration only
> occurs at this point and otherwise the car is exceptionally smooth.
>
> My car is standard and fitted with a BW35. I rebuilt all the suspension
> last winter and used mainly polyurethane ?? bushes.. uprated spax
> shockers.
>
> Are my engine/gearbox mounts on the way out...?
>
> 2. The reason for me rebuilding my suspension was to cure the violent
> judder whenever I touched the brakes. I diagnosed the judder to be
> coming from the back of the car because I could also do it using the
> handbrake.
>
> Back suspension was rebushed and fitted with new shocks, springs and
> wheel bearings. Oh and a new diff nose. The brake shoes and drums looked
> ok so I left them alone. In the 1,500 ish miles that I have covered
> since the rebuild the car has generally behaved itself. However now and
> again I get the judder back but only when braking hard (down from 70mph)
> and it is no where near as bad. I can solve the judder almost every time
> by letting go of the brakes and re-applying them..
>
> Before I go out and start replacing drums etc anyone got any ideas, ???
>
> Thanks in advance
>
> Richard Hudson
> 73 Auto White Stag