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27th November 2013, 09:26 PM
#1
ZD 30 exhaust size?
wondering any thoughts on 3 inch vs 2/3/4 exhausts for the 3.0l Ive heard the guys at beaudesert are good not too far from where Im at.
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27th November 2013 09:26 PM
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27th November 2013, 09:32 PM
#2
Advanced
Originally Posted by
Mont
wondering any thoughts on 3 inch vs 2/3/4 exhausts for the 3.0l Ive heard the guys at beaudesert are good not too far from where Im at.
G'day Mont,
I have a 3inch Manta system, very happy with it so far.
2001 GU II - 3.0TD Auto. ARB Bullbar - Runva 11XP Winch - NADed with Boost & EGT gauges - OME 2in Lift - Manta 3in - Dual Battery - Spotties & LED Lightbar - Uniden 80ch UHF - Rear Drawers & Engel Fridge - 3/4 Steel cage
Car goes vroom
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27th November 2013, 10:10 PM
#3
I can only speak on what I have. 3inch Redback system with no muffler and hi flow cat. BD systems I see always recommend 2 3/3inch. Some say that 3inch is too much and the smaller size gives you a little back pressure which you apparently need. I asked a customer of mine from a few years back who does exhaust systems for a living about this. He told me on a turbo diesel you need a system from intake to the end of the exhaust to be as free flowing as possible. The turbo does a fine job of creating enough pressure in the intake manifold.
But the only way to prove this would be to have both systems for the one vehicle and do a dyno test with each pipe. I would be keen to see the results.
So the zorst I have works good. Just contemplating now about removing the cat. Shhh!
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27th November 2013, 11:02 PM
#4
BIG & BALD
I went with 3" Taipan on mine, 2011 3.0lt. Definitely an improvement over stock.
2011 GU8 ST 3.0 CRD, ARB Bullbar with IPF spotties, scrub bars and side steps, Snorkel, Dual Battery system, Waeco fridge, Turbo Timer, ARB Roof Rack with 5 IPF spotties across the front, Custom full Leather Bucket seats, DPchip, 3" Taipan exhaust, ARE Intercooler & scoop, Autron EGT/Boost and dual volt gauges, ARB front locker.
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27th November 2013, 11:52 PM
#5
Patrol Freak
Originally Posted by
Mont
wondering any thoughts on 3 inch vs 2/3/4 exhausts for the 3.0l Ive heard the guys at beaudesert are good not too far from where Im at.
comes down to what model you have so if you could let us know would help. firstly a di or prior to late 07 I would say go the 3 inch but add your gauges and dawes valve to stop overboost issues now if you have a crd you can cause yourself dramas if you go the 3 inch, now I have the bd exhaust and its great and egr block and I don't have boost issues but I know some do have issues with the 3 inch
07 crd,,bridgestone 697lt, 2.75 buedesert ex,
SOLD theres a lot of my blood, sweat and money in that troll.
92 gq ti tb42efi my brothers gq extractors dual batteries brake controller uhf alloy bullbar
SOLD with a heavy heart but gone to a nice young fella
13 y62 the beast that burbles
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The Following User Says Thank You to kevin07 For This Useful Post:
threedogs (28th November 2013)
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28th November 2013, 12:23 AM
#6
What dramas could you cause kevin07?
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28th November 2013, 09:02 AM
#7
Patrol God
I have a 3" straight through system with sports Cat on my 04 Di.
The BD 2.75" system some say is perfect for the Common rail 3lt
Combined with a chip you'll get the most benefit from the exhaust,
along with EGR block.
What year is yours??
Lets face it they are pretty much choked from the factory
04 ST 3lt auto, not enough Mods to keep me happy, but getting there
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28th November 2013, 05:28 PM
#8
Hi All its a 3.0 Di 2004 model and yes the over pressure issues i think need to be addressed first. Still feeling nervous till i get the gauges and dawes installed etc. mudski do you recommend any particular gauges ? and what px range for the boost gauge will be neded? Cheers M
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28th November 2013, 05:38 PM
#9
Patrol God
zero to 30 for boost , have you brought the pillar pod yet?
Also get the pyro in centigrade
VDO make a good gauge as do Autron, I run Speco white face
with no problems at all
04 ST 3lt auto, not enough Mods to keep me happy, but getting there
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28th November 2013, 05:43 PM
#10
Patrol Freak
Originally Posted by
mudski
What dramas could you cause kevin07?
me personally I can cause many dramas but may I guess your talking about 3 inch exhausts well many people suffer overboost and limp mode
07 crd,,bridgestone 697lt, 2.75 buedesert ex,
SOLD theres a lot of my blood, sweat and money in that troll.
92 gq ti tb42efi my brothers gq extractors dual batteries brake controller uhf alloy bullbar
SOLD with a heavy heart but gone to a nice young fella
13 y62 the beast that burbles
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