Quote:
Originally Posted by tsk94
I'd just look into getting springs for the STR kit you already have. I believe berns fixed most (maybe all?) of his knockback issues after installing them on his STR kit - hopefully he can confirm.
For how much you track it, seems like a waste to swap it out entirely.
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New pads, new rotor rings, 6# kb springs, AND, run the top and bottom edges of the pads (the metal part, not the pad material) on a grinder to shave off enough material that'll let the pad slide into the caliper without any force. Typically the tolerances are so tight that the pad requires some wiggling and pushing to get it into place. Let that lil fella sit freely.
Following this, it's also helpful to think about WHERE you're getting knocback and what the car is doing at that time. Usually, you're experiencing high side-to-side g loads and dealing with a ton of weight transfer. Now ask yourself if there's a way you can cause the car to have less of this by a) adjusting your line or b) adjusting what your feet are doing, c) all of the above?
I found that by adjusting my line and finding the confidence and grip to stay on throttle more consistently, rather than lift off throttle and toss the car into the left kink leading to Bus Stop at Buttonwillow, the car was experiencing way less weight transfer. I was running much quicker AND my knockback was gone.
TLDR -- the STR40 trophy kit is awesome, and clearly has lasted you a while. For how little you're tracking, I don't see the point in dumping money into an AP kit. The kockback can be fixed and driven around, and you're not talking about a lot of "real money" because this kit hasn't costed you much at all if you've never changed rotors or pads... Even being older than your kid, it's costed you much less than the kid! Enjoy.