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MG MGB Technical - suspension bushing

Hello all, any one used superpro polyurethane blue suspension bushes, are they easy to fit and do you grease the outside inside of the bush thanks for your time.
jay lewis

I have only used Superflex bushes which come with a sachet of white "lubricant". I used it inside & outside -wherever bush contacted metal. Oil/grease is not good with rubber but should be ok with poly. Afraid I don't know what the white lubricant was-perhaps others do
M
Michael Beswick

Jay-
Superflex and Superpro are the same bushing, made by the same company, just marketed under different names in different markets. They do not produce them in molds (a sure sign of an El Cheapo bushing), instead they start life as a solid rod that is actually precision machined to size and shape on computerized machines. As a result, they will slip-fit into place. This is not often the case with molded bushings. Sometimes you have to pound them into place with a mallet, which will result in their bores being distorted or compressed, which in turn will cause them to squeak. SuperFlex bushings are self-lubricating once installed. They even include stainless steel sleeves so that rust cannot abrade them. If you want to purchase a softer set (like rubber) for use in a daily driver, go to http://www.racecar.co.uk/SuperFlex/ and specify 80 Shore-A bushing material for the A-arm (wishbone) bushings (Original Equipment Part# AHH 7933 *, BHH 1123 **, SuperFlex Part# SPF0012) and 90 Shore-A bushing material when you order the trunnion (Original Equipment Part# 8G 621, SuperFlex Part# SPF0282), leaf spring (Front- Original Equipment Part# AHH 644, SuperFlex Part# SPF0181: Rear- Original Equipment Part# 2A 5176, SuperFlex Part# SPF0014 ), and stabilizer bar bushings. SuperFlex makes a product line that even includes stabilizer bar bushings for 1” (SuperFlex Part# SPF0063/25), 7/8” (SuperFlex Part# SPF0063/22), 3/4” (Original Equipment Part# AHH 7927, SuperFlex Part# SPF0063/19), 11/16” (Original Equipment Part# AHH 7921, SuperFlex Part# SPF0063/17.5), 5/8” (Original Equipment Part# IB 4526, SuperFlex Part# SPF0063/16), and 9/16” (Original Equipment Part# AHH 6541, SuperFlex Part# SPF0063/14). I would recommend 70 Shore-A material for both the lipped upper and flat lower crossmember pads (Original Equipment Part# AHH 6204, AHH 6206, respectively; SuperFlex Part# SPF0015A, SPF0015, respectively) and stabilizer bars.
*(MGB bushing) **(V8 bushing)

Michael-
The white grease is a special Lithium Grease.
Steve S.

Thanks very much stev.Should the crossmember pads be replaced ?does it mean removing c/m from the car to install .
jay lewis

Jay-
Chances are that the crossmember pads are original, in which case they will be as hard as bricks. No vibration damping there, then. Yes, you will have to remove the four bolts that attach the crossmember to the car, detach the steering column from the steering rack, and disconnect the exhaust system in order to lower the crossmember enough to replace the pads, but this need not be a traumatic challange to an owner-mechanic's ablities if kept that simple. Use a pair of hydraulic jacks to lower the crossmember just enough, swap the pads, then just jack it back up and reassemble. An easy saturday afternoon's work. Less if you've already got the car up to work on the front suspension.
Steve S.

I don't recall having to touch with the exhaust system when I completely removed my front cross member.

Otherwise typically detailed and informative post, Steve! :)
Curtis Walker

You can use Waxoyl with rubber or the poly bushings.
Paul Hunt 2

This thread was discussed between 24/06/2007 and 25/06/2007

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