Exhaust Sealant

[jims-terrano]

Hi guys, I’ll not be fitting my new exhaust section for a few days but want to be prepared.
The flanges between centre section and the front pipe and rear sections have gaskets between them. Is it worth putting some sealant on the faces of the sections?

 

[macabethiel]

I use sealant every time.

I am a big fan of sealant can't remember the make for certain but I bought a tube of sealant might have been called Firegum it was white. As I recall you leave it to set before you start the engine up and it does what it says on the tube/tin.

Lasted for years and you could still remove the components later if needed.

 

[RJL Services]

I always use exhaust assembly paste normally I use the Timex one it's in like a mastic tube lasts for years
:thumb2

 

[Lazy-Ferret]

I am not keen on the paste, unless it is a case of using it to repair it, just trying to get a few more months out of a system. With off-roading, I find that I seem to replace sections more often than the whole exhaust system, so want to be able to open the joints easily.

I found that if you use the paste and then have to disconnect a joint, you never seem to get a good seal again on that joint, so then have to use more paste, but that in turn builds up and cracks making it leak, so I now use the gaskets with a bit of grease smeared on both sides to allow them to slide into place.

I was recommended the "grease" idea by an old mechanic, when I had the 2200 Woseley landcrab, which had a terrible design of shell clamp that fixed the exhaust to the manifold. I could never get it to seal, and went down the paste route. It got worse and worse, then this guy told me the only way to get it to seal was to take the manifold off, clean all the (as he referred to it) paste 5h1t off it, back to metal, and then when putting it back together, cover it all with a load of general purpose grease. Not only did the grease "stick" the clamps together, but it allowed the whole system to move as it settled into place. Once the engine came up to temp, it smelt a bit for a few mins, but the grease carbonised, and made a perfect seal...

Done that for years, and even when adding a new section of exhaust to an old one, I just do the Gasket and grease method, which has worked fine.

 

[jims-terrano]

Now theres an idea Clive, sometimes the old ways are the best ways:thumbs that siad I don’t think the flange joint is too bad to break apart when needed and if it takes a bit of brushing off it’s not too bad to get to. Yeah the old Wolsey sounds like the mini used to be, that flange always seemed to snap on my mini until I replaced the engine mountings.

 

[Lazy-Ferret]

Now theres an idea Clive, sometimes the old ways are the best ways:thumbs that siad I don’t think the flange joint is too bad to break apart when needed and if it takes a bit of brushing off it’s not too bad to get to. Yeah the old Wolsey sounds like the mini used to be, that flange always seemed to snap on my mini until I replaced the engine mountings.

The 1800/2200 landcrabs were just big mini's.

Engine Mounts, Drive shaft Donuts, track rod ends, exhaust to manifold clamps, and the rear hydro-eleastic, displacement cylinders were the bane of my life on those LandCrabs, I had 3 myself, and helped my dad maintain the 4 he had over the years.

But those exhaust clamps, over the back of the engine, where you could not see them, and made of 4 separate parts, and then requiring 2 sets of nut's, bolts, and lock washers were enough to drive even the most patient person to drink... I ended up braising the bolts to the clamps, so that at least reduced some of the part count.

 

[macabethiel]

Those pesky front pipe joints

The 1800/2200 landcrabs were just big mini's.

But those exhaust clamps, over the back of the engine, where you could not see them, and made of 4 separate parts, and then requiring 2 sets of nut's, bolts, and lock washers were enough to drive even the most patient person to drink... I ended up braising the bolts to the clamps, so that at least reduced some of the part count.

My first Austin Mini back in the 1960's always had a blow from where the front pipe attached to the manifold. Eventually I just fitted a Cooper Long Centre Branch Manifold by Mangoletsi with a Y Piece at the bottom, extra engine steady bars top & bottom. Fixed never blew again I just dropped lucky on the price at the time for the LCB Manifold at local family run spares shop in Cresswell that had bought a job lot of parts.

When I sold the car I kept the Manifold for my next Cooper and put the standard system back on.

Happy days!

 

[Lazy-Ferret]

My first Austin Mini back in the 1960's always had a blow from where the front pipe attached to the manifold. Eventually I just fitted a Cooper Long Centre Branch Manifold by Mangoletsi with a Y Piece at the bottom, extra engine steady bars top & bottom. Fixed never blew again I just dropped lucky on the price at the time for the LCB Manifold at local family run spares shop in Cresswell that had bought a job lot of parts.

When I sold the car I kept the Manifold for my next Cooper and put the standard system back on.

Happy days!

It's funny, I go to classic car shows, and stand there looking at some of the cars I had back in the old days, and reminisce to the fun I had driving them, and in the case of the Woseley, the amazing comfort, then wonder about getting one myself and restoring it... Then I read a thread like this, and remember all the things I hated about them and some of the terrible design flaws, which puts me back on the straight and narrow...... :doh It's hard enough repairing all the things my wife breaks, plus keeping 2 x T2's and a caravan on the road...:augie

 

[Banshee]

It's funny, I go to classic car shows, and stand there looking at some of the cars I had back in the old days, and reminisce to the fun I had driving them, and in the case of the Woseley, the amazing comfort, then wonder about getting one myself and restoring it... Then I read a thread like this, and remember all the things I hated about them and some of the terrible design flaws, which puts me back on the straight and narrow...... :doh It's hard enough repairing all the things my wife breaks, plus keeping 2 x T2's and a caravan on the road...:augie

Grafter :thumbs

 

[macabethiel]

There are some advantages of modern !

It's funny, I go to classic car shows, and stand there looking at some of the cars I had back in the old days, and reminisce to the fun I had driving them, and in the case of the Woseley, the amazing comfort, then wonder about getting one myself and restoring it... Then I read a thread like this, and remember all the things I hated about them and some of the terrible design flaws, which puts me back on the straight and narrow...... :doh It's hard enough repairing all the things my wife breaks, plus keeping 2 x T2's and a caravan on the road...:augie

I know what you mean I always loved the Jensen CV8 as much as an E-Type to look at. Then some years ago I drove a CV8 and it was awful - no power steering amongst many other things. I still like to look at them though.

Likewise the Mercedes W113 Sl now called the Pagoda, great to look at but the drive is like a barge! The old Maxi was a far better ride! lol

I liked the old FWD Wolseley Six they were a great car back in the day.