Thread: rear control arms

This makes me want to weigh my aluminum TurboFX arms and then check against stock weight. I'll try to remember to do it.

Ben, javier did it in the original thread for them. Stock with bushing's was 1lb 13 oz and aluminium with rod ends was 1lb 9 oz, chromoly 2-1/2 lb

post 47

http://www.sr20-forum.com/turbofx/46628-adjustable-b13-rear-lcas-gauging-interest-2.html

Oh how easily I forget.

Does anyone know if there is any advantage to that center brace that attaches to the sub frame?

I can agree that will help reduce flex between those two points. That part is the legit one in that photo, imho.

I have Truaxmotorsports sub frame braces welded in, I've also have my front sub frame welded to the body, plus front fender braces. It may be time to research welding some sort of bracing to my rear sub frame.

When Overkill Engineering Motorsports was providing these, I was not a fan. I'm not a fan of this one either. If you look at that section of the car it is clear it is not going to flex. If there is one well engineered part of the B13 chassis, it is the inner rear parallel arm mounts. They do not need help. Certainly not by what looks to be a thin sheet of metal that will easily bend outward when trying to counteract compression forces which is what it looks like it is trying to counteract.

Useless weight gain if you ask me.


Boxing in this section by welding a plate to the open bottom might provide some strength, but again, it looks up to the task as-is.

Just so everyone reads this, My car was the fastest street car on streets of willow last year at west coast. The only thing faster was the race car but that's another story. Yes it was my 1st time on a road coarse and yes I had Delgado Arms on the car.

People aren't buying these thinking to improve on the road coarse. Most are buying them "just because" or they simply like them and want it to be seen on their drag car.

That is correct.

Congratulations on having the fastest street car lap time on Willow. That is awesome!