3.9 V8 exhaust options

[Neesaan1via]

Hey guys , just wondering what most of you run exhaust wise running a v8 ?

Looking at making a new 1 , probably from headers back .

How many mufflers do most of you run ect ?

I'm thinking straight through with 1 medium size muffler would do the job ?

Cheers

[Gary S11]

Hi, all I have on my 96 D1 is a straight through lukey, and 2.5" pipe after it, quiet on the highway at 110. Cackles beautifully from 2500-3500 rpm then just a lovely howel from
3500- to infinity and beyond....Gary

[OneGoat]

Although my D1 now has a 4.6 I'm running a set of Pacemaker extractors to a single 2.5" pipe with a single straight through Lukey. Sounds good and you notice the power difference to the original set up. Cheers

[vogue]

Same, 2.5" from y pipes one with straight through muffler in middle, no resonator, sounds great:D

[DiscoClax]

G'day. I've got a Ford BA XR6-Turbo Ute (same as F6 Ute) centre muffler (dual in & out - 2-1/4") running into twin 2" pipes over the axle and a couple of hot-dogs in the rear wing and BA XR8/Pursuit Ute perforated tips. Chopped the take-down pipes where the two become one (each side) and ran 2-1/4" pipes to the centre muffler (with 1-1/2" balance pipe). The BA XR6T muffler is about the biggest you can fit in the space, stainless steel, straight-through, and cheap as chips as just about every exhaust shop will have some they pulled out of a customer car. Big straight-through mufflers give the best flow vs sound attenuation. The front pipes I have are a bit big for a baby 3.9 but a good size for something closer to 5.0ltrs. Sounds great and is very quiet on the open road, with a meaty growl when giving it some off-road without being anti-social driving through camping grounds, etc.

Fitting Hedman headers soon when the new (long-term project) stroker engine goes in :D C'mon Christmas...

Good luck with it :)

P.S. I'd recommend that you consider fitting bolted flanges in key locations. Makes working under there so much easier when you can just unbolt a section of exhaust.

[Nathan78]

Hi mate I have 3.9 auto in a D1
I run 2 1/2 off the stock headers with one straight throw muffler
Sounds tough as !! As said above The bark and crackles are great

[Flemo]

Im about to throw a custom 2.5inch on the 3.5L v8... might do a youtube post up, am getting them to throw a resonator on it to keep things... quietish.

[flyreels]

Hi the ones that are using the straight through Lukey is it the “Ultra flow’ and what length 350mm?
Thanks Peter

[OneGoat]

Hi the ones that are using the straight through Lukey is it the “Ultra flow’ and what length 350mm?
Thanks Peter
This is the one I used
Lukey Ultra Flow Universal Sports Muffler 500mm long [10"x 4 1/2"x 20" oval] C-C 63mm id [L17295] (http://www.bestmufflers.com/bshop/product_info.php?cPath=124_295_842&products_id=2396&osCsid=46a9ef3e9c08ae595e861877361581d9)

Cheers

[shamat]

I've got 'a similar setup to what most others have mentioned in my 97, but with the auto I find it tends to drone a bit. You get uses to it though.

[MitchD1]

Hi guys
Are any of you running a cat? Its illegal not to have a cat in Oz but because the D1's came out factory without one is it OK not to run one when you install a new exhaust, just dont want any unwanted attension
Cheers

[Gary S11]

No cats allowed, :-). Not there as per factory as you said, so no legal reason to have one..
And even with a straight through and a lukey, you can still drive it not to get noticed... But isn't that why we have a v8 ..luv the sound...Gary

[MitchD1]

Cheers Gary haha so true, love the rover 8!