Group: Just for the record, the TR6 suspension will bolt directly onto the
TR3. You can lower the car by inverting the lower A arms, or cutting the
aluminum spacer if you are using it (as Larry did similarly). This gives you
much needed camber by using the TR6 trunnions and the TR6 upper A arms give
you positive caster that you can adjust if you use XJ6 upper ball joints. They
are narrower than the "6" uppers and adjust the caster using small shims ahead
of or behind the ball joint. This is how I built Randy Williams car, and just
did the mod on a street TR3 this past weekend. I should of snapped some
photos. Perhaps my son did.
Thanks - Ed -
--- On Wed, 6/3/09, Kramer, Robert <RKramer@rdoequipment.com> wrote:
From: Kramer, Robert <RKramer@rdoequipment.com>
Subject: Re: [Fot] TR3 suspension question
To: "Larry Young" <cartravel@pobox.com>, "Fot@autox.team.net"
<Fot@autox.team.net>
Date: Wednesday, June 3, 2009, 11:02 AM
Graham Davies here in Austin came up with the idea to shorten the a-arms in
this simple fashion (He had also shortened the upper a-arms for me when I
owned your car). It is the easiest way to address camber and looks pretty
stock to most everybody. I flipped the lower a-arms and got rid of the spring
spacers altogether with 550 lb Triumphtune front springs and the car was
about
as low as it could get.
Bob Kramer
Sales Manager
RDO Equipment Company
16415 N. IH 35
Pflugerville, TX 78660
512-272-4141
-----Original Message-----
From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On
Behalf
Of Larry Young
Sent: Wednesday, June 03, 2009 9:44 AM
To: Fot@autox.team.net
Subject: Re: [Fot] TR3 suspension question
I don't know the answer about the TR6 trunnion or flipping the trunnions
over. The easiest was to lower a TR3 is to take material off the donuts
on top of the springs. Remember, you are dealing with a lever ratio.
If I remember correctly, if you want to lower it an inch, take about 1/2
inch off the donut. I lowered my car a little bit at a time with this
method.
We've discussed suspension a lot in the past, so check the archives.
When I was playing with my suspension, I wrote this little report.
http://home.swbell.net/cartrip/TRsuspension.PDF
There are many different ways to change the camber. I think all of them
are technically illegal in CVAR. If you shorten A arms, here is a photo
of a neat way to do it. I'll call this the Kramer method, since they
were done that way on Bob Kramer's previous car. Two short pieces of
pipe are welded in where the inside hole is off the flat.
http://home.swbell.net/cartrip/AArms02a.JPG
Larry Young
Dlhogye@aol.com wrote:
> Hello Fot,
> I'm beginning to set up the front suspension of my TR3 for racing. Is it
> possible to use a TR6 trunnion and bushing kit on TR3 lower control arms.
> It is my understanding that the TR6 trunnion lowers the front about an
inch.
> Of course the upper arms from TR4A-TR6 would be used. Also, does anyone
know
> if it's possible to flip the TR3 lower control arms to lower the front. I
> can see that doing so would lower the front, about a half inch, this also
> lowers the spring pan. Does anyone have any tips for this type of set up?
> Thanks,
> Dave H.
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