About 2 months ago I replaced the diffy in my spitfire and I replaced
all the u-joints around july. In my case the noise was definately from
the diffy and my car has about 55K on the odometer. From what I
understand a diffy noise will be heard under load. Mine became audible
around 40 mph with moderate acceleration. Keep stomping the go pedal
after that and it just got louder and louder (I'm talking REALLY loud).
Take your foot off the gas, boom, no noise. Apparently the pinion wore
a groove in the ring outside of the normal tooth. U-joints by
comparison traditionally make more of a bang or repetative "wump".
hope that helps
Ryan Smith
72 Emerald Green Spitfire
Date: 7 Jan 99 08:01:07 EST
From: Brian Furgalus <mowog@usa.net>
To: spitfires@Autox.Team.Net
Subject: Spitfire Diff. Noise Question
Reply-To: Brian Furgalus <mowog@usa.net>
I am going to be making a gentleman an offer on a 1980 Spitfire. The
car is
in nice mechanical condition, but the rear end concerns me. At speed,
something from the rear tends to make an intermitant whining noise (like
gears
in a gearbox, but it's definitely NOT that!).With the clutch disengaged,
the
noise disappears. The car only has 34,000 genuine miles, so I really
don't
see how there could be a diff. problem, but I could be wrong! I'm
inclined to
think it's a diff. problem, because if it were anything else, the noise
would
be evident on decel., regardless of whether or not the clutch was
disengaged.
I don't know how to describe the noise. It is, I think, most definitely
from
the diff, but I know the diff is noisy in the spitfire. What is
considered
normal? It's not so loud as to not be able to talk over it, but it sure
is
annoying after a while, top up!
Thanks!
Brian Furgalus
(BTW- This list is the greatest thing since sliced bread! I happily
read
people's stories. They're fun!)
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