Bigger Exhaust

Submitted: Thursday, Jul 08, 2004 at 09:29
ThreadID: 14476 Views:1885 Replies:4 FollowUps:4
This Thread has been Archived
Hi All
I Want to Upgrade / Replace my current Exhaust from the Cat (Catalytic Converter) back and was wondering how big was big enough? I did the same to my old Duv Duv Ford Laser (Lowered to the bump Stops and Ear Drum splitting Stereo) and that was 2¼’ Dia the Place that installed it said that if I went any bigger I wouldn’t have enough Back Pressure and that I would start to burn exhaust valves out. My first question is, can I go bigger than 2¼‘ on my Pajero as it has a bigger Engine 3.5l as apposed to 1.6l in my ford. And secondly will I see any increased Performance /improvement if I do?

Thanks in Advance
Back Expand Un-Read 0 Moderator

Reply By: Member - Chris M (QLD) - Thursday, Jul 08, 2004 at 09:42

Thursday, Jul 08, 2004 at 09:42
Matt,

In all of my 4wd vehciles thus far (toyota, nissan, suzuki) I have upgraded all of the exhausts. I must admit that although I didn't feel a huge difference in the Tojo and suzi, (pretty standard) my nissan definitely felt the difference. If you check my specs, you'll see why.

I had a 2.5 fitted straight through when the turbo was fitted but later was told by my current performance dude that 3 inch was much better, and what a change.

For your style of vehicle, you may find a little more power but you will most likely notice the cleaner rev range of the vehicle, breathing much easier IMHO.

Cheers mate,

Chris.
AnswerID: 66919

Follow Up By: Matt (W.A.) - Thursday, Jul 08, 2004 at 09:57

Thursday, Jul 08, 2004 at 09:57
Cheers Chris,

Thanks for the Quick reply
0
FollowupID: 327691

Follow Up By: Member - Chris M (QLD) - Thursday, Jul 08, 2004 at 10:03

Thursday, Jul 08, 2004 at 10:03
What size lift in the Paj?
0
FollowupID: 327693

Follow Up By: Matt (W.A.) - Thursday, Jul 08, 2004 at 10:20

Thursday, Jul 08, 2004 at 10:20
At the moment Cooper Discoverer A/T Shoes 265’s, Enforcer H/D Springs
Will eventually put Rancho RS9000 Adjustable Shocks In and Cooper Discoverer A/T Shoes 285’s its lifted about 2’ at the moment
0
FollowupID: 327694

Follow Up By: Member - Chris M (QLD) - Thursday, Jul 08, 2004 at 10:24

Thursday, Jul 08, 2004 at 10:24
Looks good mate!

Cheers.
0
FollowupID: 327695

Reply By: Truckster (Vic) - Thursday, Jul 08, 2004 at 10:36

Thursday, Jul 08, 2004 at 10:36
Increased performance will be 'it sounds different' so will feel better.

I went for extractors and 2.5in exhaust on mine before the turbo, and it made 0 difference. Others will defend their purchase by stating massive increases in power, cause they dont like to admit it was waste of coin.

If your not replacing the complete system, I cant see how there would be difference in power, as its still restricted from the engine to the cat..

Is there a Pajero club in WA? Maybe a call to them may assist.
http://www.pajeroclub.com.au/
maybe of use to you they are in Vic, but a few emails from you to them may get you some genuine answers.

Also have a look at http://www.pps.net.au/dinos4x4/ hes in WA with a modded Paj..

YMMV
AnswerID: 66923

Reply By: Member - Roachie SA- Thursday, Jul 08, 2004 at 11:05

Thursday, Jul 08, 2004 at 11:05
Matt,

I've got a 3" on my TD Patrol. In order to have any affect, like Truckster said, it needs to be all the way through the exhaust system. In my case, that included a whole new dump pipe (from Binskins at Wauchope NSW). The dump pipe alone cost $220- and provides a much bigger appeture (spelling?) right at the turbo outlet, for the gases to escape into the 3" pipe work. Also, I only used a short Lukey hotdog muffler and no resonator at the rear end. It made a noticeable difference to the truck's low-down performance (ie from idle to when the turbo cuts in at around 1800rpm). Noise level has hardly been affected, but it does have a different note to a standard 4.2 T/d
AnswerID: 66931

Reply By: Matt (W.A.) - Thursday, Jul 08, 2004 at 14:52

Thursday, Jul 08, 2004 at 14:52
Thanks Gents,
will look into getting extractors, Sports Cat and a 3' from there back. this is in preperation for the Supercharger.
AnswerID: 66959

Sponsored Links

Popular Products (13)