[6pack] Reply from Vance Navarette on Sway Bar Thread F/up - Good info

[Bruce Simms]

Thank you for this Vance.   This will go on my to-do (sometimes wish) list.   
A good old fashion Merry Christmas to all.
 
Bruce Simms

----- Original Message ----
From: "Navarrette, Vance" <vance.navarrette at intel.com>
To: Bruce Simms <brucesimms2003 at yahoo.ca>
Sent: Wednesday, December 19, 2007 10:20:09 AM
Subject: RE: f/up on sway bar thread


    Bruce:
 
    Either one will work, as they are both a reasonable size. I tend to be on the conservative side as I have done many upgrades that I later found harsh or objectionable for some reason. I had a Pontiac Fiero with a factory front bar but no rear bar. I installed the rear bar (Addco recommended upgrading the front bar at the same time, which I did not do) and found it to be very sweet indeed. A friend who had a stock Fiero was amazed at the change in cornering forces a simple change like that made.
    Given your upgrades already, I would go with the 3/4" bar. If you find it tends toward over steer you can remove it, or simply replace the stock front with the Addco bar. My feeling is that it will be very close to neutral with the 3/4". A car with a low center of gravity and neutral handling should generate 1G of lateral force, so normally you run out of courage before the car does.
    If your suspension were stock, I would be inclined towards the 5/8" bar for the TR4A, assuming it can be made to fit (it should as the differences are minor indeed). Remember that you want 1/2 of your roll stiffness to come from the springs, and 1/2 from the bar. Given your upgraded springs the larger bar will probably be the one that works best. Get ready for an awesome change in handling.
 
    Vance
 




From: Bruce Simms [mailto:brucesimms2003 at yahoo.ca] 
Sent: December 18, 2007 2:27 PM
To: Navarrette, Vance; 6pack at autox.team.net
Subject: f/up on sway bar thread


Hi Vince:  I'm following up on your detailed email to Bob Danielson re sway bars.   Surprised it didn't generate any responses.   
 
Okay, the vendors advise upgrading front bar at same time you add a rear bar to keep a balance, so I never got too ambitious about it.   You're recommending something different, add a rear bar and keep the stock front bar.  Go for neutral handling, but understand what that means.   Addco has 3/4 bar for TR6 and TR250 and 5/8 bar for TR4A, not sure if Tr4A rear bar will fit the 6.     I have Spax adjustable up front, Munroe conversion in rear and TRF semi-comp springs and poly bushes all round.   Stock front bar.    Recommendation for rear bar?
 
Bruce Simms
73 TR6
Daily driver sometimes used for spirited fun.


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