Morris Minor Owners Club

Got my diaphragms and a bit disappointed by ESMs fitting instructions so I did an online search as well as looking here on the club site.
It seems that no one has published a guide!! or I am not a very good searcher.
I understand that I will have to drill some holes but I cant even be sure if its just 2 clips fore and aft and 3 side to side ( sound logical as the old straps are 4 side to side and 3 fore and aft) to get at the frame to drill the holes I think I will have to take to seat cover off and foam out.
I think that I will send it back and make my own straps from Pirelli webbing using the existing clips and strap fittings.
Be grateful for any pointers on this though!

I use standard seat webbing. It lasts a long time and can be fitted with original clips.

When my driver's seat started to sag, some years ago, I tried the rubber diaphragm and had major issues getting it to fit.
I resorted to the original webbing.
I refurbished my front seats with new covers, padding and webbing etc., about four years ago. I think the webbing is just as good and easier to fit. I made a tool to stretch the rubber and ease fitting the clips into their respective holes in the frame.
Possibly wrong, but I'm sure I read somewhere that the diaphragms were fitted to the front seats of Police Minors?

Reluctant to spend money I re-strang (re-strung? re-string?) our seats to help support the ageing webbing. I used paracord simply because I had some.

With care this can be done without upsetting the covers too much. Don't over tighten the cord otherwise you will be sitting too high on the seat rather than settling into it a bit. Run the cords along the webs and make sure your knots hold.

Mervin wrote: ↑Wed Apr 01, 2026 10:27 am When my driver's seat started to sag, some years ago, I tried the rubber diaphragm and had major issues getting it to fit.
I resorted to the original webbing.
I refurbished my front seats with new covers, padding and webbing etc., about four years ago. I think the webbing is just as good and easier to fit. I made a tool to stretch the rubber and ease fitting the clips into their respective holes in the frame.
Possibly wrong, but I'm sure I read somewhere that the diaphragms were fitted to the front seats of Police Minors?

Yes, apparently Pandas all had diaphragm support ( Possibly the thinking was that PCs were all on the porky side? ) Reports suggest that those fitted then were of better quality.