Need to replace my 1997 exhaust system. Would prefer to convert to dual exhausts, with or without new headers. Street legality is not an issue. Any ideas/facts about who carries stuff to fit my disco?

 

Don't waste your money, there will be no gain in power or performance to speak of.

 

Talk to your local muffler shop and have them custom build you one.
www.roversnorth.com carries lots of LR exhausts but nothing in dual.

 

I cut my resonator and mufflers off and ran a strait pipe from the cats for a hundred dollars, and it sounds good

 

I have a question about the shorty headers that are used on p38 RR's, I know that they are not as good as full length but won't they help? They should still flow better than the log manifolds on our Discos correct? And as far as I can tell there is no space to get a second pipe to the rear of the truck on the passenger side because of the fuel tank/suspension placement. Any ideas?

 

Disco Mike,

It has been my experience, in 50 years+ of wrenching my own vehicles, and building off-road racers, that adding dual exhausts ALWAYS results in improved performance, and reduced fuel consumption and emissions. particularly when the installation includes tuned headers.

As an example, I purchased a new 1976 280Z from Bob Sharp, the legendary Datsun/Nissan racer. Actually, it was a demo. Sharp would take two Z's fresh off the boat, put it through his race shop, and add IMSA plastic and a tuned dual exhaust system, then give them to the general managers as demos. Once I drove one, I bought it. Paid the stock Z price, less $6000 cuz it was 'used' according to Connecticut laws. No dealer was offering discounts due to demand.

Car & Driver rated the top speed of a stock '76 Z as 131 mph. I could bury the 165 max speedo in mine, and it was a Corvette killer. Also, in a high-speed trip from Massachussetts to Florida, a fellow driver in the 'speed train' had to put at least a gallon more in his '77 280Z 5-speed thin I in my '76 4-speed every time we stopped to refuel.

I don't claim to be an expert, is there something about the Rover engine that I don't understand?

 

You won't get the return unless you chip the ECU. It just won't read any changes. You can do all of the work to the intake/exhaust you want, but a chip is the only way to get the hp out of the mods. They aren't late 70's Z's.

Getting headers into these is even more tight than a P38. Look at the driver's side. the steering shaft is in the way. People have modded headers and made them work, so it can be done if you want, it just isn't worth the time and $$ for what you get out of it.

 

okaydiscoguy,

That makes sense, thanks for the reply. Next move will be to upgrade my ECU, and go from there. Thanks again.

 

I've seen them twined out all the way back just straight, looks killer, sounds cray for a disco. Just follow the same path, helps if you got a shop and can make ur own. lol.

 

i just spent 700 bucks yesterday having my exhaust redone... both cats were shot and both gaskets from the headers to the downpipes were gone, not in bad shape or leaking, GONE... i had dual exhaust already but it was not "off road friendly"... i tore at least 2 hangers off getting hung up on things... how i have duals from the headers through magnaflow high flow cats, into dual 12 inch glasspacks, into 1 3 inch pipe that exits about where the stock one did... it sounds a lot better than my old set up... i will try to get some pictures up in the next day or two...