[Fot] Neg. camber on 1964 tr4

[davehogye]

Hello Jon, 
Welcome to the FoT. 
Thanks Joe, for linking me in to this topic. 
I too would scan the archives for suspension information. 
First and foremost, all TR3/4 suspension modifications involve switching to TR4A/TR6 upper A-arms and 3 degree caster trunnion. I believe the early TR4s had the 0 degree trunnion as did the TR2/3. Jon, if that's what is on your car, it has to be changed. 
Tony Drews documented this extensively on his website, tonydrews.com. Tony changes everything to TR4A/TR6, including the upright. The through bolt trunnion is one of the best aspects of this change. This trunnion makes further adjustments and servicing much easier. 
I used the RevingtonTR adjustable fulcrum pivot on my TR3. I thought it was a good compromise to the cut and shut a-arm method and adjustable rod end type. However, I do think that the adjustable rod end is the best way to go and that is what Gary has fine tuned. I know that a few others have used the rod end modification, including uncle jack. 
The Revington TR fulcrum pin spaces the a-arms outward and I had a clearance issue on the inner wheel well body work on my TR3. I trimmed the pin as much as I could beyond the Nyloc nut fastener and tweaked the body work slightly. With the outward spacing on the a-arms they use spacers on each side of the ball joint. This can cause clearance problems between the a-arm and the wheel. I experienced this on one side and made further adjustments. 
I know a TR2 and a TR3 racer that use the Revington design, they race with HMSA. Come to think of it, these guys should be in the FoT. 


Dave H. 


----- Original Message -----
From: N197TR4 at cs.com 
To: JGannaway at calstar.org, fot at autox.team.net 
Sent: Saturday, March 9, 2013 8:35:38 AM 
Subject: Re: [Fot] Neg. camber on 1964 tr4 

Jon, 

We (and several others) have sectioned the wishbones to shorten and adjust 
to about 2.5 degrees, as I remember it. On the other end of the spectrum, 
Gary Horskorta (in your neighborhood) developed fixturing to produce a fully 
adjustable upper A-arm. 

If you scroll to the bottom, you will see "Archive: 
http://www.team.net/archive". This subject has come up several times and you may be able to glean 
some information from there. 

I dont know what Dave Hogye did, but whatever it was, it would be first 
cabin. He might jump in on this The list seems a bit quiet right now with folks 
getting ready for the season. 

Welcome aboard to the FOT.. 

Hop on a plane with your son and join us at Road America in September. We 
will be all paddocked together in what seems to be the best Kastner Cup we 
have ever had. A lot of activities, track touring, notables from all over 
North America, and about 10-15 Triumph guys from Europe and the U.K. Memorable. 

Joe (A) 


> I am preparing a 1964 tr4 to vintage race in California. I am looking for 
> simple and easy ways to get negative camber in the car. Any suggestions 
> would be helpful. 
> 
> Jon Gannaway 
> 831-402-4080 
> 
> 
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