3" exhaust and turbo whistle
Submitted: Friday, Feb 15, 2008 at 08:49
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Member - Len H (QLD)
Morning Forumites,
Just had a 3"
Beaudesert exhaust system fitted to the Patrol TD6 and very happy with instant power / torque results (don't mind the very slight 'rumble' from the back end either!).
One thing I have noticed since is that you can now hear the turbo whistle, whereas in the 3.5 years since I purchased the TD6, there has been no such noise noticeable at all.
Left me wondering whether the thing was working with the original Nissan system; or is perhaps that the new system (being of vastly different construction) magnifies the turbo machinations?
I expect fuel consumption to lag for a few weeks, while I play with the thing some.
Life is good.
Regards,
Reply By: Member - Doug T (FNQ) - Friday, Feb 15, 2008 at 09:49
Friday, Feb 15, 2008 at 09:49
Len
Should sound Mickey Mouse now, I have Extractors on ny Troopy but have yet to fit the back 3/4 of the system with 2½ inch pipe, that's a gunnado project,
I still remember the sound effect from the 1977 Nissan UD CK40 ,It was put on the Dyno at Wagga and prucing 240bhp at the wheels from a 250bhp motor, with the hollow muffler it would sound like a Mortar shell passing over at every gear change...lol, I have heard some of the older Scania's do it too.
.
AnswerID:
287587
Follow Up By: rockpiglet - Friday, Feb 15, 2008 at 19:03
Friday, Feb 15, 2008 at 19:03
My old 12lt Scania would back off a beaut, its the back pressure from the intercooler. If it didn't whistle back then you new you had done an intercooler hose.
The boys at
beaudesert have one of the best pipe bending machines in the world on their floor. Got em to do up a 6inch stainless straight stack for my 9ltr.While I was at it I took 110mm off my muffler and ran 500mm straight pipe internal, the horse pwr difference in the midrange is very suprising.
Not as much back pressure on the DAF coolers but then they first invented intercoolers.
FollowupID:
552919
Reply By: Trevor R (QLD) - Friday, Feb 15, 2008 at 09:53
Friday, Feb 15, 2008 at 09:53
Hi Len,
Turbo whistle on my GU is one of the most enjoyable sounds to my ears, I just love it.
Now just got to screw the boost up, increase fuel, fit guage after guage and you'll be set hehehehhehe.
PS my fuel consumption has never come back, even after 7 yrs. Just having too much fun all the time now LOL!!!.
Enjoy, Trevor.
AnswerID:
287588
Reply By: Member - Len H (QLD) - Friday, Feb 15, 2008 at 10:33
Friday, Feb 15, 2008 at 10:33
Hello all,
Yes, running muffler and I'll leave it that way to ensure my beloved does not wake up to the fact that I have been neglecting to obtain permission before the fact!
Why did I not do this yonk ago? I have heard many $WD's before that have had exhaust work done, and most sound like the approach of Armageddon; this thing sounds beautiful. I may take the long way
home s'arvo!
Well worth it; the additional power and drivability makes it a different beastie altogether and as much (almost) fun to punt along as my TR6.
Regards...Len
AnswerID:
287596
Reply By: Wizard1 - Friday, Feb 15, 2008 at 10:42
Friday, Feb 15, 2008 at 10:42
Yes it really is a distinctive and attention seeking sound.
The freeing up of the exhaust flow is allowing the turbo to "spool" up at lower revs hence why you can now hear it. With a standard exhaust you would have found the turbo coming i at higher revs and your engne noise would have drowned it out.
Had a 2 3/4
Beaudesert system fitted to my Prado TD and had several other owners ask why it makes that noise especially at low speed.
One of my suggestions to a mate with a 3.0 GUII was to get down there and get one of their systems as he tows a 3 tonne van.
AnswerID:
287597
Reply By: rumpig - Friday, Feb 15, 2008 at 19:20
Friday, Feb 15, 2008 at 19:20
my 105 series cruiser did exactly the same thing after installing a
beaudesert exhaust 3" system, the whistle is heaps more noticable. the first week my fuel economy was pretty ordinary, but i had just added an intercooler to the turbo aswell, so you have to try out the extra power available. i've found that out on the open highway i get heaps better fuel economy with the turbo, intercooler and 3' system then when it was just a standard 1HZ. i get another 100klms - 150klms out of both tanks of fuel, so i'm happy about that.
AnswerID:
287671