Paul:
Judging from your description, I'd say it is not:
A broken crank. (Really, now!)
A driveshaft imbalance. This would cause the car to shake violently from
40mph on up. (Sort of the way I feel emotionally at 70 mph in a Spitfire.
;-)
If it's a misfiring cylinder, this is obviously very easy to check.
Where are you feeling the shake? In the steering wheel? If so, double
check the obvious cause first, before you go looking for zebras ... wheel
balance, bearings, steering column bushings, brakes sticking, stuff like
that. It could be one or all of these things, IMHO.
===
Martin Secrest
73 GT6 (driver)
72 TR6 (weekender)
Arlington, VA
"She's got a carburetor tied to the moon."
----- Original Message -----
From: Ptegler <ptegler@gouldfo.com>
To: <triumphs@autox.team.net>; CARS Spitfires@Autox. Team. Net (E-mail)
<spitfires@autox.team.net>; <SPIT6CGT6@yahoogroups.com>;
<spitfire-enthusiast@egroups.com>; <nass@egroups.com>
Sent: Tuesday, October 16, 2001 11:36 AM
Subject: STRANGE vibration!
> ...on a rather solid '75 Spitfire with O/D.....
>
> Can anyone describe... what a failing CV driveshaft
> joint feels like?
>
> Just yesterday I noticed a rather weird vibration.....
> almost felt/sounded like a cylinder not firing (load on the engine)
> between 1500 - 3000 rpm. Third gear seemed the worse.
> Decelerating... I was waiting for the 'clang' of something breaking.
> Accelerating and cruising at say... 45 mph it really isn't that
> noticeable....and yes... is seems engine speed dependent.
>
> Ujoints, bearing, etc. on suspension components all appear
> to be snug. (fairly new all the way around)
>
> Driveshaft balance??? gearbox? broken crank? ??????????
>
> any WAGs accepted!!
>
> Paul Tegler ptegler@gouldfo.com www.teglerizer.com
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