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Fwd: RE: [FOT] Shocks and Springs

Subject: Fwd: RE: [FOT] Shocks and Springs
From: Jim Cun <>
Date: Mon, 13 Nov 2006 06:10:42 +1100 (EST)
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Date: Mon, 13 Nov 2006 06:07:03 +1100 (EST)
From: Jim Cun <>
Subject: RE: [FOT] Shocks and Springs
To: Mark York <>
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         That is a big improvement on your lap times! Thanks for the help it is 
  Regards Jim

Mark York <> wrote:
        v\:* {behavior:url(#default#VML);}  o\:* {behavior:url(#default#VML);}  
w\:* {behavior:url(#default#VML);}  .shape {behavior:url(#default#VML);}        
st1\:*{behavior:url(#default#ieooui) }                Jim
  The MGB GT springs are around 475 # and are shorter than the standard Triumph 
spring by almost 2 inches. They fit inside the shock tower without any 
modification although the diameter of the spring is a bit smaller than the TR. 
I wasnt able to use the rubber packing on the top of the spring, but its a 
race car so if it squeaks a bit who cares. The MG springs were cheap I think I 
paid under $30 each from TRF p/n BHH-1077, (Moss Motors also has them).
  The car was originally set up with Spax shocks but they were pretty worn out 
when I bought the car. I couldnt get any adjustment out of them. The Roadster 
Factory had a sale on Koni (about $95 each). They are definitely harder to set 
up so if you like to fiddle with shock stiffness be prepared to remove the 
shock completely to make proper adjustments.
  I rebuilt the front end using 3 deg castor trunnions, springs, shocks, Delrin 
bushings, Panasport wheels with Hoosier Vintage TD tires. Its hard to say what 
made the biggest difference but my lap times came down by around 6-7 seconds at 
Pacific Raceways in Seattle and Portland International Raceway. I think the new 
tires made the biggest difference (I was running Dunlops) and more seat time 
  Good luck
  From: Jim Cun [] 
Sent: Sunday, November 12, 2006 1:36 AM
To: Mark York
Subject: RE: [FOT] Shocks and Springs


            The application is for track use. I currently have Spax shocks and 
450lbs springs on the front.


Mark York <> wrote:

Street or track application?
On my TR3 race car I use Koni shocks set at 1/2 turn from full stiff with
MGB-GT springs (lowers the car about an inch).

-----Original Message-----
From: [] On Behalf
Of Jim Cun
Sent: Saturday, November 11, 2006 11:54 PM
Subject: [FOT] Shocks and Springs

Hi all just wanted to find out your thoughts on the best type of shocks and
spring rates for a TR3/TR4. 

Regards Jim

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