No more difficult to fit and remove Exhausts for me..

No more difficult to fit and remove Exhausts for me..

Author
Discussion

MGJohn

Original Poster:

10,203 posts

190 months

Saturday 6th June 2015
quotequote all
EXHAUSTS ... never liked DIY working on them.

I've been working on the rear silencers of my two Rover 620ti. The steel hanger rods welded to the exhaust silencer and pipes increase in size over time with corrosion of the exposed parts. Exposure to all the filth and road muck it's surprising they last so well. However, that corrosion makes removal of those rods from the Rubber Hangers VERY difficult. I've even seen pros in workshops struggle to get them off.

Anyway I did get both off and had a brainwave. Even at my age I do suffer from the occasional good...... idea

I have a roll of coarse emery tape the type used on some yesteryear grinders. You cut lengths and fit to grinder wheels. I bought the roll back in the 1970s. It was not cheap but I've used lots of it over the years and still have half the roll left. I cut a length about 30cm from it. Using stout gloves to hold each end of the coarse tape, I used it to remove the corrosion from all the steel rods by pulling alternatively with both hands with the tape around the hanger rods. Soon down to bare bright metal and nice and smooth.

Road filth under the car will soon attack that metal so smeared all the cleaned up rod areas with Copper Grease. Also a little Copper Grease in the locating holes in the rubber hangers.

You would not believe how easy it was to slip those rods into their rubber hanger locations ! Took seconds where in the past DIYer me took many minutes to refit. I've seen pros working in far better conditions and facilities than myself also struggle to remove and refit these things.

I had to remove and refit one and it was less than two seconds to remove and about fifteen seconds to refit. In the past a refit, remove and refit would take up to thirty minutes.

I will use this technique again. Another useful self-taught "new trick" lesson learned by this old Dog .. smile

No more struggling with awkward exhaust systems for me...

Mr2Mike

20,143 posts

262 months

Saturday 6th June 2015
quotequote all
Sorry John, although I find most of your DIY posts quite entertaining, using emery strip to remove rust is hardly a novel idea.

wildoliver

8,999 posts

223 months

Saturday 6th June 2015
quotequote all
Afraid I'm the same, yet to meet a hanger I can't get off with a pry bar and a bit of whatever live is handy.

You know the copper grease will rot the rubber hanger right?

Gerradi

1,648 posts

127 months

Sunday 7th June 2015
quotequote all
Cor kick a bloke he's down guys...smile

Wipe the grease off & get some lithium grease, as for the emery cloth put to good use but forget the grease this time coat it with clear lacquer, the missus nail varnish clear coat will do, seals out the rust;)

MGJohn

Original Poster:

10,203 posts

190 months

Sunday 7th June 2015
quotequote all
Gerradi said:
Cor kick a bloke he's down guys...smile

Wipe the grease off & get some lithium grease, as for the emery cloth put to good use but forget the grease this time coat it with clear lacquer, the missus nail varnish clear coat will do, seals out the rust;)
PH negativity rules.... smile One may ask what's a pry bar. I post these things for the benefit of amateurs like me who, unlike some, no names no pack drill, do not know it all.

Once the emery cloth tape had removed the corrosion which had effectively increased the diameter and roughened the surface of the steel support rods either side of the rubber hangers to return it the the smoother near original diameter, much easier to slip off without some form or leverage such as a pry bar.

Good idea that Nail Varnish to protect the exposed metal rod supports. On the new silencer, I actually used some clear coat top coat spray from an old shaker can of aerosol laying about. Good use for the last few dregs. The merest smear of lubricant in the location holes of the rubber hanger supports will never harm them in many years. They are made of hard stuff. Well the ones on my cars, despite now over seventeen years old!