Thread: Lucas vacuum advance DIY repair

I did this repair on several vac advance units probably 12-15 years ago- I'm sure I would have posted it on here but it's a long while ago- anyway I think I did 3 units and on two of them the diaphragm had no holes but had pulled away from the rim. I'd recommend using some kind of adhesive at the rim.

Originally Posted by POD

I did this repair on several vac advance units probably 12-15 years ago- I'm sure I would have posted it on here but it's a long while ago- anyway I think I did 3 units and on two of them the diaphragm had no holes but had pulled away from the rim. I'd recommend using some kind of adhesive at the rim.

Like I said with the plasti dip repair you could see in 1 or 2 spots it didn't seal to the rim properly and I found a pinhole afterwards, the paint was still pretty tacky when I reinstalled it and I went overboard causing a couple of drips but I think with a bit more care and lighter coats plasti dip would work brilliantly. When I reassembled it the 1st time round I didn't hammer it shut as well as I did the 2nd.
With the nitrile rubber it's a nice even surface all the way around, I just spent the extra time panel beating it closed nice and tight all the way around. Also being nitrile I think a sealant won't stick either so I didn't use any. I'd like to get a vacuum gauge onto it and test it but testing with timing light showed that it was working perfectly.
Cheers Jim