I have been trying to decide between a solid subframe set in development, and 95 Rockwell hardness bushings from Ronnie K. I plan on making my Supra really handling focused so I am not concerned with road/diff noise. Also plan on heavily reinforcing the subframe as well.
Solid Aluminium or Ronnie K Bushings ?
- Thread starter ochocinco5k
- Start date
ochocinco5k;1967886 said:
In addition to the NVH issues ,solid SubFrame bushings could result in chassis damage(s) and other complications . I personally never found any need to run anything more than nylon subFrame isolators ,and IIRC the other Road Racing competition supra on this forum ( SupraGuru's) still uses rubber bushings and isolators - FIY both cars are cornering as fast or faster than highly competitive Honda S2000 TTC prepared cars!
Lord Digital : I pressume your talking about ones like BIC's subframe spacers ? I was also entertaining the idea of the Ronnie K bushings and these spacers in the back.
ochocinco5k;1968099 said:
That is correct ,Isolators = nylon subframe spacers = pic. I did some very extensive work on the subframe ,but could not really justify the cost of replacing the bushing becouse most of stabilization will come from the spacers. IMO Control arms and alignment are far more important...
The rear subframe was designed to have that play in the rear. but both ronniek and solid spacers will pick up that slack and make the rear more firm. With the alum spacers your going to get a lot of vibrations through the car.
Ronniek you wont. He also has different harness to choose from.
Ronniek you wont. He also has different harness to choose from.
I was planning on going with ronnie k bushings, as they are the superior product, but i did not want to wait for them to come here from Australia, so I went with the aluminum spacers. They work well, and are a very nice product, but out of the two i would choose ronnie k bushings for obvious reasons.
I can say that there are no harsh vibrations with the aluminum spacers. I can hear my diff at times, but it is not very noticeable or loud.
I can say that there are no harsh vibrations with the aluminum spacers. I can hear my diff at times, but it is not very noticeable or loud.
BIC makes nylon spacers....
http://www.supramania.com/forums/sh...w-Product-Solid-rear-subframe-bushing-inserts
http://www.supramania.com/forums/sh...w-Product-Solid-rear-subframe-bushing-inserts
I am actually still on stock subframe bushings all the way around. Probably something I need to change out at some point but I am still getting fast by just working on the driver mod. I do have experience with a friend cracking his rear subframe a couple of drag weekends after he decided to swap to solid subframe bushings. Not sure if it was related but it wasnt a modification I was to fond of.