Hello,
My bet is on the pinion bearings. They're smaller,
turn faster and are preloaded (their most signifant
feature). If they're noisy, they can get surpisingly
tight and gritty feeling. You can detect this by
disconnecting the driveshaft and turning the pinion
flange with your fingers. The larger and not
preloaded carrier and wheel bearings last much longer.
Cheers,
Joe Mulqueen
'60 BT7
'56 MGA (with similar rear dif design and just
rebuilt)
Date: Tue, 30 Nov 2004 16:40:42 -0700
From: Dave & Marlene <rusd@velocitus.net>
Subject: Re: rear end growl
Hi Ken,
"growl" means different things to different folks as
do most of the
other descriptions. You need to pinpoint things a bit
further. I would
describe a whine as the noise that the transmission
makes when it is in
first gear. A growl, I don't know. A gear noise will
be constant for a
given condition & usually described as a whine. Does
the "noise"
occur
upon acceleration, steady speed, or coast, or a
combination of these.
A
pinion bearing noise will be at a higher frequency
than an axle related
noise, as in once per driveshaft revolution. A wheel
bearing noise
will
be rythmic in sound, & at a lower frequency, as in
once per wheel
revolution, sometimes described as a rumble. With no
standard
terminology, it's hard to get on the same page. Hope I
haven't confused
things more.
Dave Russell
BN2
Freese, Ken wrote:
> I have a bearing growl that improves a little bit as
I initialy drive
a
> block or so. I changed a rear wheel bearing with no
difference.
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
|