200tdi exhaust box question.

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landie man

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247
Location
Dover Kent
As some of you know I've just taken out a V8, and put in a 200tdi, and I also put in a proper full 200tdi exhaust system. (everything runs well and great since the conversion by the way) The only thing I dont like is the back box on the 200tdi exhaust hangs down quite low.

Has anyone else who also has a 200tdi exhaust system had any trouble with bashing it on rocks etc when 'laning'? Mind you, it doesnt hang any lower than the rear axle casing, it's more or less exactly the same hight from the ground, so if I was to whack the back box, I would also damage the axle casing. Mind you I do have protectors over the casings.

Has anyone any ideas what I can do to protect the back 200tdi exhaust box section?

By the way, I was amazed to get £460.00 for that full V8 engine I took out and sold on ebay! And the guy was well pleased with it, it was also originally a rover SD1 engine. Mind you it did come with an adapter plate to bolt straight onto a defender LT77 box, with no adaptions needed to the 90's engine mounts. Plus I had reciepts for a new starter, water pump, altenator, dizzy cap, leads and belts, and full service. (cost £230) Plus it had only done 20,000, although I couldnt prove that. And it also had electronic ignition, with a spare modual I found at a swapmeet I threw in.

Are V8's still fetching that kind of money with todays high fuel costs?? or was I just very lucky? (I'm just curious) I was pleasently surprised to get that amount for it! The guy who bought it had a lovely mint 87 landy, but a knackered old 2 and a quarter petrol engine, and he only does a couple of thousand a year, so I guess for him it was worth it, and perfect. But even so £460 for an old V8! I only started it off at £50 with no reserve to get it out of my way in my garage.:D
 
hangs that low?? something must be wrong then..

the back box on my 90 was tucked up between the chassi rails and under the rear tub, you cant even see it, its not lower than the rear x member
 
[JP];1802219 said:
hangs that low?? something must be wrong then..

the back box on my 90 was tucked up between the chassi rails and under the rear tub, you cant even see it, its not lower than the rear x member
the way the box is designed, plus where it bolts onto, there is no way I could have done it any other way! my back box is the one where the tail pipe comes out the side, but the clamp for the middle section joint is sort of side on. Hope you know what I mean. Hang o I'll try and put a pic, or a link up. Is it the same as yours? That back box can only hang down for it to line up with the middle section, the rest is well out of the way, and the downpipe does go above the crossmember out of the way. It really was the only way I could see to fit it! unless you know another way?
 
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maybe it depends on year of vehicle? :confused:


Dunno! Is yours a 90 or a 110? My pipe comes down from the manifild, has a couple of slights kinks in it as it runs along the chassis and then goes into the back box and exits the other side of the back back box with a kinked pipe onto the left side behind the wheel.

I could not even imagine how the one in your picture would fit my fender!
 
Mine now has a straight through exhaust, so i cant check how it was

but it does look like the one that was there is like the one on your pic.

the shorter pipe goes to the middle boxs, then the long pipe, runs under the chassi rail and to the side...
but im sure the back box itself was just tucked under the rear tub....
 
Dunno! Is yours a 90 or a 110? My pipe comes down from the manifild, has a couple of slights kinks in it as it runs along the chassis and then goes into the back box and exits the other side of the back back box with a kinked pipe onto the left side behind the wheel.

I could not even imagine how the one in your picture would fit my fender!
The first bit sounds identical to mine. I have a 90 by the way. I cant raise it above the axle, because I have two bars coming out at an angle which hold the tow bar to the chassis rails. Even if I haddent, I may of got it up a tad more, but i'm governed as to where the brackets are positioned. And it's the only place it will fit. As I said, it dont hang any lower than the rear axle, it just dont go up as much as I would like it too.

I'll take a pic of it underneath when I get time. It's not a problem for gentle greenlanes. I wont be able to do any heavy stuff though, then to be honest I dont want to at 52 anyway.

I Cant be bothered constantly crawling under the chassis to repair all the damage it causes :rolleyes: I was just wondering if anyone else had the same prob as me with their 200tdi rear box, and if it caused them any probs with hitting rocks etc?

The one I have is deff for a defender 90, I made sure when I bought it off 'IRS offroad'.
 
[JP];1802288 said:
Mine now has a straight through exhaust, so i cant check how it was

but it does look like the one that was there is like the one on your pic.

the shorter pipe goes to the middle boxs, then the long pipe, runs under the chassi rail and to the side...
but im sure the back box itself was just tucked under the rear tub....
Yes thats right for the first two bits! Maybe you didnt have the tow bar rails in the way then? I'll have to have another look at it see if I can alter it. It'll only be a question of undoing a few bolts, and putting more fire gu on the joints again.
 
The way yours is is how mine was and it is too low in my opinion. I knocked it off a few times. The solution is to just chop it out like I have.
Well at least I know I've put it on right! When you say chop it out, do you mean literally cut the box off, and weld in a piece of straight pipe? I have already done away with the center silencer box, and bought one of those stainless straight runs thats supposed to give you more fuel economy and speed. so my rear silencer is the only one I have.

Would that cause any probs if I got rid of that too? i.e. MOT issues for a start? If not, does anyone know where I can get a 200tdi straight run piece from then with a silencer on to fit my SWB defender 90? a link with a pic would be great please if poss! :)
 
There was another thread on here last week about straight through exhausts. They are illegal and the police are clamping down. Ask me how I know..... :(

Seems it is acceptable to pick on us in our clunky old oil burners as a soft target despite the fact the tossers in the Corsas with boom boxes and straight through exhausts cause way more nuisance.

I now have no middle box and have the back box fitted which is acceptable to the law.
 
There was another thread on here last week about straight through exhausts. They are illegal and the police are clamping down. Ask me how I know..... :(

Seems it is acceptable to pick on us in our clunky old oil burners as a soft target despite the fact the tossers in the Corsas with boom boxes and straight through exhausts cause way more nuisance.

I now have no middle box and have the back box fitted which is acceptable to the law.
Just to clarify, are you saying my silencerless middle section is illegal? or is it ok providing I have my back silencer? is it just that you have to have at least one silencer box? if so, chopping off my rear silencer wouldnt be an option then legally? Sorry to hear you got pulled by the way!:(
 
It is illegally to have an exhaust system that does not pass through a silencer box. So I originally had a straight through pipe and that was not acceptable. When I put the rear silencer back on it was deemed acceptable as the exhaust now passes through a silencer box. The lack of a middle box was not deemed a problem. To be fair it is a lot quieter with a back box on it without seeming to effect the performance.

I was stopped going through a local village at a police 'roadblock' doing vehicle safety and compliance checks. This is apparantly becoming very widespread. What was really interesting is that they did not bust my chops over the black and silver plates, they were more interested in the mechanical elements. The used big bomb disposal type mirrors to check the underside!!
 
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FWIW my learning experience on my 200tdi was as follows;

1) Started with stock system front to back
2) Replaced centre pipe to remove the two silencers with a stainless straight through pipe - marginal increase in performance and volume.
3) Went for a side exit rear pipe to replace the huge silencer behind the crossmember - too loud but was more responsive (had the pump & wastegate tuned)
4) replaced centre section with the old one removed in 2), quieter but strangled the engine!
5) Spliced in a Disco 'can' silencer in the stainless centre section in 2) and eureka - nice exhaust note and still noticeably perky(!)

For info the original back box/silencer was well out of the way and only the end of teh pipe ever snagged on steep departure angles.

* All of these mods were for sheer vanity and marginal performance gains (there's honesty for you!) but I like the result.:)
 
This is a standard 200Tdi 90 back box:

DSC00474.jpg

As you can see it is well up out of the way and a hell of a lot higher than the axle casing! Not sure what your post is referring to.

I have a towbar fitted these days, the stays that go back to the chassis brackets are well below and out of the way of the box. The towbar itself is what is more likely to ground out.
 
Been reading back over the old threads and searching round.

Is there any concensus on which bit of an exhaust it is best to chop out, if any?

Some say remove middle box, some say back box, some say cat etc.

I need to look at mine as the back box has fallen off (!) and it feels (subjectively) like I have less power - contrary to the suggestion of many post on here.
 
This is a standard 200Tdi 90 back box:

View attachment 28728

As you can see it is well up out of the way and a hell of a lot higher than the axle casing! Not sure what your post is referring to.

I have a towbar fitted these days, the stays that go back to the chassis brackets are well below and out of the way of the box. The towbar itself is what is more likely to ground out.
I think you must have a slightly differant system to mine, as for one thing If I tried to put my box in the possition yours is in, my tow bar support bars would be totally in the way. There is no other way I can have my rear box other than the silencer box hanging down at a bit of an angle to about axle casing level, And it's deff a 200tdi defender exhaust rear box I have, as I made sure of it.

But as I said, there must be different types. If you know, can you tell me who you ordered yours from?
 
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