Pretty much

How about a straight mp3/wav file for the flash/youtube challenged?

How's the drone in the interior?

 

There isn't any drone from the V12, it occasionally "pops" because there is no catalytic converters on it and the unburned fuel ignites in the pipe somewhere before it exits. The sound of the V12 without cats and mufflers is hard to describe because of the firing order. It is not choppy like a big block V8 which I really like the sound of and always have. There is no interior or exterior drone either. But my 1987 Jaguar XJ6 with the 4.2 Inline 6 cylinder hemi drones like crazy with the mufflers removed, and without any mufflers or resonators it sounds like a tank, and it's obnoxiously LOUD, headache LOUD.
My Jag mechanic set up the fueling on the V12 to account for the extra air because I added a high efficiency air intake.
I am going to take some videos and post them either on here or on youtube so everyone can listen to them.
When the car is idling is very quiet, the only time it makes some reasonable noise is when I am acelerating, or when I have it up to 3000 rpm on the highway, it sounds like a small plane taking off til it kicks into third when I merge on the highway.
I listen to my stereo and everything and don't have to turn it really loud to hear it. (I'm gonna post a video cuz no believes me..) ha ha....
It is not common to run straight pipes on a V12 or straight pipes on any car for that matter where there is emissions testing, but we don't have that here because we don't have a smog problem so no air testing.

 

Oh, so your emissions somehow stay within the borders of Alberta?

Must be some miraculous technology that the rest of the world does not have.

 

There is no reason for you to be sarcastic, if you are offended that I refuse to keep cats OR mufflers on my car that's your "issue", DON'T MAKE IT MINE.
As for the "technology" in Alberta, check a weather map and you will see that the prevailing winds keep the air clean here, we don't have mountains or valleys to trap the polution like the Fraser Valley in British Columbia.

If you have no sense of humour which my posts were written in then keep your sarcastic comments to yourself, this is a fun place and comments like yours spoil the fun.

 

Ok, This is Vincent

I eventually did the straight pipe on my XJR, it sounds a bit raw but I would say it is rather muscular than just loud or noise.

Jaguar did a good job, it sounds like an muscle car now.

over all, it is not bad at all and it does not sound "cheap",but full of power.

Also, XJR has a quite good sound proofing interior,therefore on highway.it is still a smooth sound

 

Vincent, thanks for the update, but it's as useless as a chocolate fireguard, WE NEED pictures and video!

 

will try to post some audio clips here

 

MR.CRUZ'S MAD JAGAUR XJR. - YouTube













deleted middle muffler. slight intake gasket leak.

 

sounds almost the same, but not offense, mine sounds a bit cleaner without "hicup"

 

mr.jimmycruz 's Jagzilla. - YouTube

 

time to do the pulley bearings?

 

As an FYI- the roadside smog tests are OPTIONAL. The highway patrol guy just makes them look official and required. I drove up to one, the Chippie told me to pull over into the checkpoint- the guy in the white lab coat (all smiles and friendly) says "Do you have a quick 3 minutes today for us to run an emission check on your car?" Me- "NOPE" Guy in white jacket "Ok sir, thank you and have a good d...."

 

please elaborate Sean b

 

At the beginning of the clip you're above the engine, and it sounds like there's a dry bearing in there, it should be quieter. There's a tensioner + idler pulley on the s/c and accessory belts, 4 in total, one of these sounds like it needs replacing. Just a head's up!

 

Yeah, exactly, it sounds like the nanny state that British Columbia has become, it is like California, and my car would fail in both places, but here one province over in Alberta just above Montana, I have straight pipes on my Jaguar XJS V12 and we don't the emissions testing **** here, and by the time they impliment it my car will more than 25 years old, as it is, it is already 24 years old. And hopefully cars older than 25 years will be exempt from emissions testing. I hollowed out two of the cats, and removed the other two, so they can look underneath and still see catalytic converters,,,,,,,,,(hollow), and then I removed all four mufflers, well 2 mufflers, and two resonators, the cars sound mean...lol...
Donna

 

that's one mean machine....always did love the sound of the V8's, much different than the V12, I am running straight pipes on my V12 and it is not that loud...lol..

 

 

No cats, eh.... that's got to be worth 25+ HP, yes?

This sounds like a job for "cue the superhero music" Electric cutouts

 

Nah, more like 10 hp.

https://www.jaguarforums.com/forum/x...es-dyno-41275/

If I change my exhaust setup in the future, I'll probably install electric cutouts.

 

Wow, you just burst one of my bubbles I was really hoping a cats mod + much freer flowing exhaust would help me pick up 25+ HP combined.

Humph, i appreciate the info, but humph!!


So if I know now that I didn't know what I thought I knew then, am I more in the know now? Am I more ignorant now that I know my ignorance, or less??