Rich, thanks for your thoughts on this. Converting the uprights sounds likes
like a bear. Anybody else have any ideas on modifications?
I think having the uprights crack tested is a good idea, particularly after
the car has been purchased, sat unused for some time, or hit a curb.
Stephen
> ----------
> From: Rikrock@aol.com[SMTP:Rikrock@aol.com]
> Sent: Monday, June 18, 2001 7:25 PM
> To: Hill, Stephen M EDUC:EX
> Cc: usa-tvr@yahoogroups.com; tvr@autox.team.net
> Subject: TVR upright upgrade
>
> In a message dated 01-06-18 19:09:07 EDT, Stephen.Hill@gems7.gov.bc.ca
> writes:
>
> << now these are a classic weakness in
> the 2500's, if not the whole Vixen line. I know the 2500M's have TR6
> trunnions and that they are much more robust. How difficult is it to swap
> these over?? >>
>
> Hello,
>
> I thought about that and did some comparing. The first thing you notice
> is
> that the TR6 uprights are a few inches taller than the Herald/Spit unit.
> I
> can't remember the exact measurement, but it's 3 or 4 inches longer.
> Looks
> to me like you would have to relocate the upper a-arm mounts on the car or
>
> cut the appropriate amount out of the TR6 upright and weld it back
> together.
> The diameter of the trunnion stud is larger than the Herald/Spit so you
> need
> to adapt the TR6 trunnion assembly to the lower a-arm. And the upper
> balljoint to the upper a-arm. The upper should be easier to do if you use
>
> the a-arm from an M-chassis. Looked like so much work that I gave up on
> the
> idea......until now ;-)
>
> Hmmmmmm.......... if you use the upright and a-arms from an
> M-chassis.......well, you would still need to relocate the upper a-arm
> mounts, probably by welding a new tube on top of the Vixen main tube. The
>
> lower a-arm mounts might also need to be relocated. I think the distance
> between the bushings is different from the Vixen. We still have shocks
> and
> steering arms to consider. I'm not sure what that might involve.
>
> I will be looking at an M-chassis this week. I'll let you know what else
> I
> see
>
> There must be an upright from SOMETHING that would be "easier" to fit. I
> wonder what the street-rod guys use?
>
> Rich Rock
> Pottstown, PA
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