Watts linkWatts and torque arm

Discussion in 'Boss 302 and S197 Technical Forum' started by Gt500jerry, Aug 23, 2018.

  1. Gt500jerry

    Gt500jerry TMO Intermediate

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    Thinking about pulling the trigger on cortex watts link and torque arm. I only track it 3 to 4 times a year just like the stable feeling the provide. Just looking for any advice on these.
     
  2. VoodooBoss

    VoodooBoss Rick Moderator

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    I really liked the CorteX watts link on my Boss 302. Not sure if I was any faster with it but I liked how it behaved over curbs on track and bumps on the street.
     
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  3. Wingrider

    Wingrider '11 GT500, 99% Track Car. Lots of mods & I coach

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    +1 on the CorteX watts and Torque Arm. Flattens out the car and really plants the car.
     
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  4. Gt500jerry

    Gt500jerry TMO Intermediate

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    Did you install yourself? If not about what was the cost?
     
  5. Wingrider

    Wingrider '11 GT500, 99% Track Car. Lots of mods & I coach

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    I live in the bay area and had CorteX install their full system front and rear plus some other things like the FR 302r ABS so I'm sorry I don't have a figure on the labor for that section.
     
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  6. Pitt302

    Pitt302 TMO Advanced

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    Did the install of Cortex Watts link, Torque Arm, LCA's,in my garage. You need to drill two holes in Diff housing,other wise bolts right in. I also went with one piece Drive Shaft at the same time.
     
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  7. Gt500jerry

    Gt500jerry TMO Intermediate

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    Im not a great mechanic. Most shops want around 800 to 1000 to do the install. I really don't want to spend that but I don't want to mess it up.
     
  8. ArizonaBOSS

    ArizonaBOSS Because racecar. Moderator

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    The watts is a bolt-in affair. If you have a capable friend maybe you can get them to install it for beer and pizza...
    What I really like about the CorteX watts is the ease of adjustment and also each position in the roll center adjustment can be felt as an actionable change to the car's on-throttle steering and power-down characteristics.
     
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  9. Gt500jerry

    Gt500jerry TMO Intermediate

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    Thanks man. I do have some handy friends.
     
  10. ArizonaBOSS

    ArizonaBOSS Because racecar. Moderator

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    Here are the installation sheets for the Watts and Torque Arm, so you can see what you are getting in to. I haven't installed a torque arm before, but other than the drilling the ears of the differential housing it looks very simple; and the way they have you set everything else up first makes it seem like that drilling activity will be fairly foolproof (but will take some time to get through all the material).
     
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  11. Gt500jerry

    Gt500jerry TMO Intermediate

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    Thank you
     
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  12. Coz

    Coz TMO Race

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    With the Torque Arm, what consideration must be made if using a one-piece driveshaft?

    I've heard that the pinion angle is more important with the 1pc. With a lowered car, I think the only way to adjust it with a TA is to cut down the mounts on the TA that attach to the rear diff housing.
     
  13. Pitt302

    Pitt302 TMO Advanced

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    Cortex preset my LCA length for Torque Arm/ T spring, everything bolted up, no adjustment for Pinion angle, was told Torque Arm set this right. I suppose you could adjust by shimming the ears where it bolts to Diff. The stock UCA/third link is a little difficult to remove , you need a very large wrench with cheater bar to loosen the bolt under the rear seat.
     
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  14. Fabman

    Fabman Project: "Frankenstang"

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    It's not that hard really, especially if it's done on a lift. Just follow the directions and you are good to go. Pinion angle is pre set in the geometry of the torque arm. Again, follow the directions are you will be fine.
     
  15. Wingrider

    Wingrider '11 GT500, 99% Track Car. Lots of mods & I coach

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    CorteX did a great job setting up mine because a year or so later when I had the 2pc removed and Driveshaft Shop CF driveshaft put on- the angles were perfect and the spacing was perfect. Bolted right up and has been great.
     
  16. Wingrider

    Wingrider '11 GT500, 99% Track Car. Lots of mods & I coach

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    I'd sure like to learn more about how to explore those watts adjustments, but I'm fortunate enough to be able to have CorteX test/drive the car around Sonoma and I just assume I should leave it how they adjust it.
     
  17. Fabman

    Fabman Project: "Frankenstang"

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    Lower the pivot to tighten the car up, raise it to loosen it up. That's it in a nutshell.
    Of course there's more to it, but that requires a bigger nutshell.
     
    Last edited: Aug 24, 2018
  18. ArizonaBOSS

    ArizonaBOSS Because racecar. Moderator

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    Agreed with Fabman with the very important aspect that in the lower settings on the watts, the car was more responsive to throttle steering. Depending on your driving style you could get the car pointed towards the exit and unwind the wheel earlier than you thought, provided you got on the throttle early enough and aggressive enough. Somewhat counter-intuitive but it can work very well depending on driving style. Lower settings could actually be very useful for shorter tracks with tighter turns.
     
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  19. Wingrider

    Wingrider '11 GT500, 99% Track Car. Lots of mods & I coach

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    These have been informative, thank you. Wait- So if I want less oversteer moving up one hole could improve that? I'm reading a contradiction in the two opinions. I must be misreading these... Oh wait- got it.
     
    Last edited: Aug 28, 2018
  20. Grant 302

    Grant 302 OPM Spent: $587,402 Moderator

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    Down for less oversteer and more grip in the rear.
     

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