Calling All Exhaust-ed Rovers...

[RageRover]

No I am not talking aobut Rovers about to die. LMAO Just wanted to see if anyone has an exhaust setup for their rover, installed preferably, cause mine is about to come off, not from rust, but from me. The RRC is almost too quiet for me, LOL, just wanting to see what you guys might have, so I get an idea of what I can do, so far, I have access to a buddies, closest's friend's, shop to do the exhaust on.

So far, I wanted to just run a glasspack in place of the stock, HUGE ASS, muffler under there, welded in of course. Duals seem hard, cause the rear diff, seems to block that possibilty from happening. I am just looking for simple and sound, not annoying of course.

So what you guys got?

[Muddy Oval]

My 72 RRC has a stock exhaust except for a Flowmaster in place of the main muffler- Holy crap it's loud. Sounds like a friggin NASCAR comin down the road. It's obnoxious.
My Defender has an NRP exhaust and although it's stainless and sounds good, it doesn't fit worth a crap and I've heard the RRC set is even worse.
Stick with stock pipes and slip in a throaty muffler...

[RageRover]

Originally Posted by Muddy Oval

My 72 RRC has a stock exhaust except for a Flowmaster in place of the main muffler- Holy crap it's loud. Sounds like a friggin NASCAR comin down the road. It's obnoxious.
My Defender has an NRP exhaust and although it's stainless and sounds good, it doesn't fit worth a crap and I've heard the RRC set is even worse.
Stick with stock pipes and slip in a throaty muffler...

Oh man, really? LMAO Wow, that surprises, me, hey Steve, what motor is in your RRC? 260 ci V8?

My 4.2 is the 260 ci V8, we all know that, LOL, but I was just thinking just hack the huge muffler in the center exhaust, leave the Cats and stock Y-pipe on and slap on a good flowing muffler, not sure what a Glasspack would sound like, I might've recalled seeing a glasspack on a Disco somewhere, but I forget, it might've been something else.

Just want to get some sound out of her, is all.

[apbtpetey]

Pat,

I think Steve (roverx) has a glasspack on his Disco.

[RageRover]

Originally Posted by apbtpetey

Pat,

I think Steve (roverx) has a glasspack on his Disco.

Huh, I wonder what it sounds like. Should be okay sounding I guess. Again.......

[Bene]

X's truck sounds pretty good, i think he might have high flow cats too. he had the black D1 with the roof rack in the Hollister videos from a little while ago.

i think i might get some of thses: http://store.summitracing.com/partde...5&autoview=sku

depending on price, maybe have them ceramic coated, and with a cherry bomb muffler, or somthing cheap like that.

[RageRover]

No Way!! He has headers on his Disco? Wow dude. Now that is nice.

BTW is X at a beach or something? LOL

[p76rangie]

I Have a single 2.5 inch exhaust with a sports flow through muffler. To get a slightly deeper V8 sound, a hot dog muffler has been added to the back. I am not sure what you call hot dogs over there, but they a steel muffler about twice the diametre of the exhaust pipe and they look like the hot dog you eat.

My exhaust is load enough for those that want to listen to the V8 note. But not load enough to be annoying or attract attention.

If you just put a flow through sports muffler (mine is quite large), I think you will find the note a little tinny.

Ian

[Bene]

Originally Posted by RageRover

No Way!! He has headers on his Disco? Wow dude. Now that is nice.

BTW is X at a beach or something? LOL

no, i dont think he has headers, i was saying I might be getting some within the next couple of months. those ones would probably fit on your 4.2

and X lives smack in the middle of a big assed valey

[RageRover]

Yeah, I have heard things about the right muffler for the right engine, and I dunno what mine will sound like, cause I want to just use a glasspack otherwise know as a Cherry Bomb on the exhaust.

Can anyone post pics of their exhaust system? Like with the center muffler area where you put on the new muffler, replacing the stock one?

Thanks Guys!!

[RageRover]

Originally Posted by Bene

no, i dont think he has headers, i was saying I might be getting some within the next couple of months. those ones would probably fit on your 4.2

and X lives smack in the middle of a big assed valey

Oops, I can't read. Yeah headers would be cool, and I wonder if they make a cam for our engines? If they do, imagine the sound! Be like a big block just chugging. There I go again, imagining again. LOL

And he lives in a big assed valley eh? LMAO Ok however you wanna define it. LMAO

[Bene]

you could probably get just about anything for your engine, just look for parts for a Buick 260

[RageRover]

Originally Posted by Bene

you could probably get just about anything for your engine, just look for parts for a Buick 260

Yup, that too, cause I still love my American V8's, don't care what they are, as long as they are pushroded, and have 8 working cylinders. LOL

[p76rangie]

That's the name you call a hot dog, its a cherry bomb. It would be very load with only one of those in. You need to add what they call a sports muffler. The gases just go in one end and straight out the other (no bends within the muffler) but they will quieten down to acceptable levels. Many Many years ago, I had a little 4 cylinder car with only a cherry bomb on it, you could hear it coming from at least a mile away.

Ian

[300bhp/ton]

Originally Posted by RageRover

Oops, I can't read. Yeah headers would be cool, and I wonder if they make a cam for our engines? If they do, imagine the sound! Be like a big block just chugging. There I go again, imagining again. LOL

And he lives in a big assed valley eh? LMAO Ok however you wanna define it. LMAO

An exhaust for a Range Rover V8 is no different to any other V8. If you want a dual setup you will have to fab it your self but personally I don't see the point. A dual setup will sound different and arguably better but on this level of performance it offers no gain in performance.

A Y pipe setup can still sound very good and will flow well enough. You will want either 2.5" tubing or 3" tubing.

If you use the formula 2.2cfm for every 1bhp will give you a could guess at the flow requirements your exhaust needs in order to produce minimal back pressure.

Most performance mufflers will be fine for this as long as they are of the straight thru variety, however many mufflers will be a restriction.

The Y pipe merge is important for scavenging, a poor designed Y will not scavenge as well, on a dual setup a H or X pipe cross over mid pipe will also scavenge.

As for headers, the stock ones are ok as far as stock goes, but if you swap them you will want to go for long tube equivelent tubular manifolds. I think Janspeed make some which are sold in the US. Header design for an n/a engine is about flow and more importantly scavenging. A good set of headers will introduce a 5 process into the combustion cycle where the negative pressure/pulse from one cylinder helps pulls air into another cylinder. This can contribute up to 80% of the air intake velocity.

The Rover V8 is a nice engine an certainly sounds the part, but it's age and origins do show. The heads are the biggest limiting factor and will always hold you back. Most parts are available for the Rover V8 so tuning is pretty easy but big power sadly is not their best attribute.

My Triumph TR7 runs a Rover V8, it's a 3.5 which originally had 155bhp running twin SU carbs. It's now got LT headers, single silencer exhaust (no cats required in UK for this year), luminition ignition, Kenlow electric fan, Weber 500 carb and Offenhauser manifold, stage 1 heads and a few other bits and it still only makes 220-230bhp.

A 4.2 with exhaust/induction mods and a cam should be able to produce 260-270bhp in reality and still be tractable at low rpms and similar economy.

However I digress, assuming the exhaust in the US is the same/similar as the UK this is what I would do.

First off I would go to an exhaust shop and have them chop out the middle muffler (the big one) and replace it with some straight pipe. This would leave only the smaller straight thru rear muffler. Depending on how it sounded I would perhaps replace the rear muffler with a cherry bomb rear box/tailpipe muffler.

However I would expect this to be fairly loud.

An alternative would be to have a complete custom exhaust made for it (off the shelf items are way over priced). If it's just for sound then go from the Y pipe back and follow the same route as the stock exhuast, however use stainless steel and two bullet mufflers, one in the middle and one at the back. This should flow well and sound very nice without being too loud or intrusive. It also shouldn't cost too much either, my brother had such an exhaust custom made for his V8 90 (it cost less than a STOCK replacement mild steel exhaust direct from Land Rover).