https://www.paddockspares.com/exhaust-silencer-rear-ss.html

Is this just a straightforward swap for my current two exit rear pipes? I'm not keen on the bad designed t junction on the current setup, single pipe looks to have better flow.

Any thoughts?

As long as it comes straight from the centre box, yes, it will fit straight on. I don't think the T on the twin system does much for gas flow either but it doesn't seem to have any detrimental effects.

Cool. I much prefer the simple look of a single exit and this back pipe looks a good deal.

The twin pipes are more for style than anything else --- the whole system is not very effective from a performance point of view
I removed silencer and fitted cherry bomb then straight through pipes at rear ---- sounds great ---- can't see problem with 1 pipe at back --- most rovers with V8 only had 1 exit

Might affect 'back pressure' but that far 'downstream' the effects of changing to one pipe should be marginal: No major 'function' otherwise so maybe RR designers just thought twin pipes looked 'cool' ?

You can't do it the other way around either i.e. you can fit a single in place of a twin but you can't fit a twin to a car that originally was a single,
or so I am led to believe. Apparently a brake pipe gets in the way? Not sure how exactly.
Also diesel tailpipes point down at the ground.

dave3d wrote:

Also diesel tailpipes point down at the ground.

So do petrol ones unless fitted with a 'performance' system.

Early cars have two brake pipes in the middle of the axle that loop up to a bracket in the middle of the floor.

Later cars moved the pipes out onto the body and dropped into the axle from the wheel arch instead.

I think the "T" section of the later exhaust would conflict with the brake pipes on an early car.

They don't. The Ascot is an early one with the brake flexi hoses going to the axle and that has a twin outlet system on it which appears to be the original. It's probably yet another of the facebook old wives tales.....

I think you are wrong. It's not a Facebook old wives tale. I got it from a p38 breaker who from personal experience ie. selling a lot of exhausts, knows that twin exhausts won't fit an earlier car, one originally with a single pipe.
p38 exhaust
see comments towards the bottom.
Maybe yours has been modified.

That's a cheapo aftermarket one anyway with those shaped tailpipe boxes (this https://www.ebay.co.uk/itm/292317399290 is what the genuine ones look like) and, having bought stuff from that seller before, I'd treat a lot of what he says with a pinch of salt.

Mine is definitely a genuine Land Rover exhaust, whether original or replacement I don't know, but it doesn't foul, or even come close to, the brake pipes. I'll get under it tomorrow and get a picture.

That's good to know. I wonder where the "doesn't fit" comments came from. These things usually have some fig of truth to them even if they aren't totally accurate.

Maybe it's just the mounts are missing on an earlier car or something.

I have a Janspeed stainless cat back exhaust on my 1995 which originally came with a single pipe and I had to re-route both the brake hoses and the ABS sensor wires to be able to fit it. I did leave the ABS wires alone originally and melted them when parking at access height.

Here's a diagram - The inset picture is the routing from 97MY.

I'd be interested to see what yours is like Gilbertd, just out of curiosity.

Ahh, the RAVE RHD picture that shows a LHD.....

Been busy today and it's been too wet to crawl under the car. I'll get a pic or two in the morning.

while it incorrectly says RHD, i'm pretty certain my 94 is laid out the same at the rear.

The flexi pipes come off the centre of the axle and go up to the left/passenger side, then the hardlines loop back around, run across the car and go up the drivers chassis leg.

Its been ages since i've been under it, but i do vaguely recall seeing the pipework and thinking "ah those are in the way of the second exhaust box/pipework". But it was a long time ago. Now i'm thinking about it, i also recall the someones fitted a later model axle without the proper bracket for the brake pipes, and the old bracket was jubilee clipped in place. I had intended to revisit that and probably switch over to the later style setup and repipe everything with new flexis. And i've instead ignored it for 5 years 😮

But if you'd picked the one marked LHD, you'd have the picture for RHD. As you say though, back end is the same so it isn't really important.

But, back to the plot. Been under the Ascot which is a 96 so has the earlier pipe runs but has a twin exhaust on it.

Looks pretty close but there's around 3 inches of clearance, the pipes run behind the alloy plate that has been added as a heat shield for the LPG pipework and wiring as per CoP11 (heatshield must be fitted if LPG pipework is within 100mm of the exhaust).

The exhaust system is genuine

and the mounting brackets are there on the chassis on both sides so, even with the exhaust running close to the brake pipes, LR intended it to be possible to fit a twin system to an early car.