Depending on what you hit on the curb, it could be an engine mount. I
have the smae problem from 55 to 60mph. Mine ended up being that my
rostyles aren't true anymore. Just because you had them balanced etc
doesn't mean yours are. I had mine balanced rotated twice, new tires put
on, then when I went in to have them balanced/rotated 5k later I was told
that they are all untrue. I haven't replaced them yet so I don't know it
this is the fix, but just cause they balanced them doesn't mean they are
good wheels.
James Nazarian
'71 B roadster
'71 BGT rust free and burnt orange
'74 BGT going by-by soon
'63 Buick 215
On Wed, 27 Oct 1999, Eric wrote:
> After getting a little rough treatment (skidding over a low kerb) the
> other day I now have vibration from the front wheels through a speed
> band from about 50 to 55mph - after this it goes away.
>
> No problems, re-balance wheels and check alignment.
>
> BUT... sitting dead on 60mph for quite a few miles the other day I
> noticed that I could barely see anything out of the rearview mirror (the
> one on the door was fine) because of vibration and when I rested my hand
> on my gearstick I found there was a really quite intense but very high
> frequency vibration. I could not 'feel' it through the wheel (or my
> seat).
>
> The more worrying aspect of this is that I have a feeling that this may
> not just be occurring at high speed but at high 'revs' in other gears
> (other than 4th) - say up above 3,500rpm. Seeing as I don't rev the
> thing like this (for any amount of time) whilst commuting I hadn't
> really picked up on it. I will try this out over the weekend.
>
> Any thoughts?
>
>
> Eric
> '68MGB MkII
>
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