Pettit Rubber Diff Bushings vs SuperPro Bushings
Thread Starter
Joined: Sep 2008
Posts: 1,881
Likes: 2
From: Miami, FL
Pettit Rubber Diff Bushings vs SuperPro Bushings
hey guys
i have to replace my diff bushings and i have both of these in the garage
for the street/track, what would be the better choice to go with??
Pettit Rubber Diff Bushings vs SuperPro Bushings
thanks,
VJ
i have to replace my diff bushings and i have both of these in the garage
for the street/track, what would be the better choice to go with??
Pettit Rubber Diff Bushings vs SuperPro Bushings
thanks,
VJ
Hey VJ,
I can't comment on the SuperPro's - but I have the Pettit ones in the RX-7 and I notice zero squeaking / vibration with them.
SuperPro's will probably give you some added stiffness (do you need it?) but you might get some residual squeaks.
IMO - either one will be a good upgrade if you have the stock bushings still in there.
-M
I can't comment on the SuperPro's - but I have the Pettit ones in the RX-7 and I notice zero squeaking / vibration with them.
SuperPro's will probably give you some added stiffness (do you need it?) but you might get some residual squeaks.
IMO - either one will be a good upgrade if you have the stock bushings still in there.
-M
For the diff I think you can use either, but rubber deteriorates quickly, especially when subjected to track abuse
From the Superpro website:
From the Superpro website:
Rubber has traditionally been used for automotive suspension bushes. It has the advantages of low cost, is easy to work with, it can be used a wide variety of applications and is able to provide a level of insulation between steel components. However, it has some significant disadvantages:
Rubber is vulnerable to abrasion
Rubber will deteriorate when exposed to ultra violet light and water
Rubber will deteriorate when exposed to chemicals such as oil, petrol, salt, antifreeze, and other solvents and airborne contaminants.
Over a period of time, when compressed, rubber will acquire a ‘Set’ in the position it has moved to.
The consequence is that the bush will quickly cease to function as it was originally intended – even if the car is not used. The driver will experience reductions in quality of handling, steering responsiveness & ride quality, plus a reduction in the life expectancy of tyres & suspension components.
By comparison, Polyurethane as a bushing material is not vulnerable to abrasion, does not deteriorate when exposed to air, light or chemicals and retains a perfect memory of its original shape. Fitting polyurethane bushes will therefore ensure that the suspension components retain their designed geometry giving better handling & steering response, longer component & tyre life and an improved ride quality over worn rubber bushes.
It will also last significantly longer than the equivalent rubber component.
The significant disadvantage of traditional polyurethane bushes, where the original rubber bush is replicated using standard industrial grade material, is an increase in the transmission of Noise, Vibration & Harshness through the vehicle suspension – when compared with NEW rubber.
Rubber is vulnerable to abrasion
Rubber will deteriorate when exposed to ultra violet light and water
Rubber will deteriorate when exposed to chemicals such as oil, petrol, salt, antifreeze, and other solvents and airborne contaminants.
Over a period of time, when compressed, rubber will acquire a ‘Set’ in the position it has moved to.
The consequence is that the bush will quickly cease to function as it was originally intended – even if the car is not used. The driver will experience reductions in quality of handling, steering responsiveness & ride quality, plus a reduction in the life expectancy of tyres & suspension components.
By comparison, Polyurethane as a bushing material is not vulnerable to abrasion, does not deteriorate when exposed to air, light or chemicals and retains a perfect memory of its original shape. Fitting polyurethane bushes will therefore ensure that the suspension components retain their designed geometry giving better handling & steering response, longer component & tyre life and an improved ride quality over worn rubber bushes.
It will also last significantly longer than the equivalent rubber component.
The significant disadvantage of traditional polyurethane bushes, where the original rubber bush is replicated using standard industrial grade material, is an increase in the transmission of Noise, Vibration & Harshness through the vehicle suspension – when compared with NEW rubber.
Last edited by yzf-r1; Apr 11, 2011 at 11:24 PM.
