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MG MGB Technical - Rear Suspension Considerations

Hello. I have a 1969 mgb roadster. I am looking at the different options for the rear suspension. I found on www.mgbmga.com a few otpions, but I just wanted to know what you guys suggested? Composite springs, panhard bar, none...????

Also, I have found on a few sites that people install "tophats" to strengthen the rear section of the MGB. Anyone know eher I can find the dimensions to these so I can build them myself? Thanks everyone!

Mark
M.D. Djerrahian

Mark-
The most cost-effective improvements that you can make to the rear suspension are:
1) New rear springs
2) New rear spring bushings (preferably from Superlight)
3) A Panhard Rod

Uprating the front dampers by 25% will compliment the above combination. If you want to go beyond this, the next step would be to install a rear stabilizer bar, then uprate the front one. 7/8" front / 5/8" rear is good, but this should be done only if you drive very hard on twisty roads.

If you choose to install Doug Jackson's composite rear springs be aware that you also have to install his Panhard rod. If you choose to not use a Panhard rod, use the parabolic rear springs from the MGOC.
Steve S.

Where would be the best place to find the panhard bar? I have seen a few out there, but was wondering if any of you had suggestions. Thanks guys!

Mark
M.D. Djerrahian

If you have the cash, then add this Hoyle rear to the Hoyle front setup as on mgbmga site

http://www.hawkcars.co.uk/parts/mgbrsusp.html

Paul
Paul

Steve:

The requirement to put a panhard rod on with the composites spring is something new to me. Can you elaborate on your requirements? Is it because the composites are too flexible?

Bryan






Bryan Prindle

Mark-
The best Panhard rod that I've seen is the one sold by Doug Jackson of British Automotive.

Bryan-
If you comb through Doug Jackson's articles on his composite leaf springs you'll find that he makes this recommendation himself. Composite leaf springs will tend to delaminate and fracture when twisted under heavy side loads, hence the need for the Panhard rod.
Steve S.

I have been using composite springs with my own panhard rod for 3 years now and must say how impressed I am.
I find the ride is a lot smoother and wet traction has also improved.
Mark
Mark

This thread was discussed between 29/10/2003 and 30/10/2003

MG MGB Technical index

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