Any advice for replacing middle and back box exhusts

[Bluespanner]

Hello, My middle section and back box have given up and have the new sections to replace. Looks in theory fairly straight forward. Any tips or advice or possible snags I might come up against from bongonaut chaps and chapettes out there?. I have done anti roll bars and oil changes but not the exhaust. Many thanks in advance, Rob

[Northern Bongolow]

no its straight forward. get new bolts though as you may end up cutting the old ones off. soak them with wd40 the night before if poss.
there are ceramic gaskets between each section so you may need new ones (£5 each), ive reused them using exhaust assemly paste with good effect.
fit from the front end if its a diesel, as the two bits together wont go over the rear axle in one piece.
can be done on car ramps easily, but watch the rear brake pipe mounted on the rear axle tube.

[Bluespanner]

Thanks NB, thats just what I needed, you are worthy of your supreme being status, Rob

[scanner]

Easy to fit if you can find 6 others to help you hold up the back box...........

It is v. heavy and to my mind a waste of space and payload as it's loss seems to have no real effect on noise levels. My advice is to buy (or get fitted) a stainless steel system with a much smaller free flowing straight through back box. It won't be that much dearer and will save money in the long run.

[missfixit70]

Easy to fit if you can find 6 others to help you hold up the back box...........

It is v. heavy and to my mind a waste of space and payload as it's loss seems to have no real effect on noise levels. My advice is to buy (or get fitted) a stainless steel system with a much smaller free flowing straight through back box. It won't be that much dearer and will save money in the long run.

Depending on how the insurance company view the modification....

[stuc]

Just done exactly the same on mine, very easy maximum 1 hours work. i built mine up off the car and mounted all in one go.

[mikexgough]

Remember Stainless exhausts mean letting your Insurance co know, but as many newer Motorhomes are opting for stainless replacements these days ...got to be way to go.....no regrets with mine...and now cheaper insurance with zero excess, but then I am an old bloke.....

[nicstrike]

Easy to fit if you can find 6 others to help you hold up the back box...........

It is v. heavy and to my mind a waste of space and payload as it's loss seems to have no real effect on noise levels. My advice is to buy (or get fitted) a stainless steel system with a much smaller free flowing straight through back box. It won't be that much dearer and will save money in the long run.

prop back box up on an axle stand when fitting.....simples!

[scanner]

Easy to fit if you can find 6 others to help you hold up the back box...........

It is v. heavy and to my mind a waste of space and payload as it's loss seems to have no real effect on noise levels. My advice is to buy (or get fitted) a stainless steel system with a much smaller free flowing straight through back box. It won't be that much dearer and will save money in the long run.

prop back box up on an axle stand when fitting.....simples!

If you've got some handy - I used a trolley jack, but won't bother with a replacement oil drum anyway when the one Mr Munkey gave me wears out.

[Jezza]

couple of qestions regarding the thread.

1) why do you have to tell the insurance company you have a stainless steel exhaust ? is it that big a mod?

2) Can you advise in detail about what to replace the back box with if going stainless/free flow - as in the last MOT they our back box was on i's way out so I may have to decide what to do about it soon

cheers
Jezza

[missfixit70]

Re question 1, you have to inform your insurance company about ALL mods, ie non standard exhaust, non standard steering wheel, non standard alloys/tyres, any suspension mods, cruise control, any mods to seating, etc, etc.
If you don't, you could find in the event of a claim that you are not covered.

[mikeonb4c]

Strange. I've changed the back box twice on mine and not found it (or the weight) a problem at all.

[scanner]

Strange. I've changed the back box twice on mine and not found it (or the weight) a problem at all.

But surely having to change it twice ( ) IS the problem and I reckon it's a problem that isn't helped by the weight putting a strain on the point where the pipe enters the back box.

As to what to replace it with? Well just a smaller, neater and lighter back box. Any stainless steel exhaust supplier should be able to advise what is available/suitable.

[rita]

Might be of interest to someone..

http://www.ebay.co.uk/itm/mazda-bongo-t ... 35b599da6e