MG-Cars.info

Welcome to our Site for MG, Triumph and Austin-Healey Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGB Technical - SU damper keeps unscrewing!

One of the black damper caps keeps unscrewing on my GT, its just the one and the thread looks OK, it also screws in pretty tight and solid.
However no matter what I do the next time I check it is always loose and has unscrewed all the way.
Its only the one but I can't see anything wrong with it, anybody came across this before?
Neckieman

Get a new damper. I had that same problem a number of years ago. I tried everything, including cleaning the threads and putting Locktite on the threads - no joy. I finally bit the bullet and purchased new caps and have not had any problems since.
Cheers,
DW DuBois

This paper may give you the answer!
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19950018571.pdf
Mike Ellsmore

A pal's did the same: replacement solved it!
Michael Beswick

Are you using the fibre washer, often supplied with rebuild kits. DON'T.
Allan Reeling

Can get blown off on hard acceleration as the damper cap is what is resisting the rise of the piston. Probably damaged threads, as said replace it. Metro turbos had a clip screwed to the neck of the piston cover to retain the cap.
paulh4

In the interest of science, try swapping the dampers with each other to see if the problem follows to the other carb.
Steven Rechter


I did swop them and it follows the one cap around. It isn't loose as it will screw in very tight without issue. However the next time I open the bonnet its there laughing and loose............
Neckieman

Allan is correct. Caused by overly thick fibre washer. Get rid of it and the original threads stay put.
D mckellar

This thread was discussed between 28/02/2017 and 02/03/2017

MG MGB Technical index

This thread is from the archives. Join the live MG MGB Technical BBS now