Tail pipe design

[Ben]

After a few too many scrapes on the rocks, my tail pipe has a split up near the muffler. If I can't find an easy replacement (e.g. on eBay,) I was going to get one made up.

Has anyone routed their tail pipe differently, for clearance or to direct the exhaust away from the curb?

[sclarke]

Just get one made. the pipe will be about $10

[andrew e]

yes, i ran mine between the rails like a tdi defender, all tucked up. I had to chop up the firewall and passenger floor though! The origional is very vunrable to rocks and mine always seemed to rattle on the sidestep or the rear tub.

http://img2.putfile.com/thumb/8/24122493510.jpg (http://www.putfile.com/pic.php?img=6460985)

http://img2.putfile.com/thumb/8/24122493480.jpg (http://www.putfile.com/pic.php?img=6460984)

http://img1.putfile.com/thumb/12/35602171269.jpg (http://www.putfile.com/pic.php?img=4317314)

When i first stuck the turbo on, i had about 6' of 3 inch radcoflex (flexable truck exhaust) with it poking out the side below the passenger door. It wasn't as noisy as you would expect as the turbo muffles the sound heaps. I drove around with this setup for a few weeks while i made the current one up.

http://img1.putfile.com/thumb/12/35602171252.jpg (http://www.putfile.com/pic.php?img=4317315)

Andy

[rar110]

Andrew was there much difference in noise after the muffler was fitted?

Ben you can just take it off and take it to a pipe bender. They will copy it exactly for you. You can knock the flanges off the existing pipe and reuse them, just need the get the end flared after putting on the flanges.

[Ben]

My question is more about any tail pipe routing options.

https://www.aulro.com/afvb/images/imported/2007/10/247.jpg

Being muffler-back, there's not a lot of options, but I was thinking if I'm getting something bent, I could do something like UKLRO's poking out the side panel (http://www.aulro.com/afvb/showthread.php't=42581). I think my tail pipe might rattle too much.

[andrew e]

Andrew was there much difference in noise after the muffler was fitted?


hell yeah, i can hear all the Ticks, squeeks, whines, rattles, vibrations, tyre growl so much clearer now, i want to remove the bloody thing! :) Seriously, its petty dam quiet, the muffler does its job well and the tailpipe is pointed at a 45 towards the road, which stops it deflecting off concrete armco, and buildings. Well worth the hassle.


Ben i wouldnt exit it through the 1/4 pannel like the poms do, you'll have soot sprayed up one side to match the diesel sprayed up the other (actually does anyone else leak diesel from their filler?). It also makes it really noisy when passing buildings and stuff.

Andy

[JDNSW]

Unless I am mistaken in NSW the exhaust is required to exit behind or at least right at the back of any passenger compartment, which does limit your options. But pointing the exit downwards would probably reduce noise somewhat - I know I would be interested in reducing exhaust noise in mine.

John

[Bigbjorn]

Unless I am mistaken in NSW the exhaust is required to exit behind or at least right at the back of any passenger compartment, which does limit your options. But pointing the exit downwards would probably reduce noise somewhat - I know I would be interested in reducing exhaust noise in mine.

John

From Qld. Transport:-

"Exhaust systems must continue to comply with relevant legislation or Australian Design Rules."

"The exhaust outlet must extend at least 40mm beyond the furthermost outboard or rearmost joint of the floor pan that is not continuously welded or permanently sealed which could permit direct access of exhaust gases to the passenger compartment, but not beyond the perimeter of the vehicle when viewed in plan"

"The exhaust outlet, if to the side of the vehicle, must discharge to the right hand side of the vehicle and downwards at an angle to the horizontal of not less than 15 degrees and not more than 45 degrees."

"The exhaust, if to the rear of the vehicle, must discharge at not more than 10 degrees above or 45 degrees below the horizontal."

[Ben]

The relevant ADR is 42.8 Exhaust Outlets.

42.8.1, which mentions the 40mm and angle of discharge, doesn't apply to our omnibuses.

This next one does: 42.8.2 Omnibuses (MD and ME Vehicles)

42.8.2.1 the exhaust outlet must be as near as practicable to the rear of the vehicle;

42.8.2.2 except in the case of vertical exhaust systems, the exhaust outlet must discharge rearwards or to the right of the vehicle, either horizontally or at no more than 45 degrees downwards, and must not extend beyond the perimeter of the vehicle when viewed in plan; and

42.8.2.3 Does not apply in this case, it's to do with vertical outlets.

That said, ADR 42 applies to omnibuses manufactured on or after 1 July 1988.

My compliance plate doesn't list ADR 9 (which I think then became 42 'General Safety Requirements'). I'm still trying to find out what specifications the exhaust must meet.

I'd like to tuck the exhaust tip out the way, and I also wouldn't mind directing the exhaust away from the left - the street parking here usually results in the tail pipe pointing at the curb side seating of the local cafes and restaurants.

[Ben]

the tailpipe is pointed at a 45 towards the road, which stops it deflecting off concrete armco, and buildings. Well worth the hassle.

I find the reflection very noticeable from cars and barriers - I should see about angling down and rearwards.


you'll have soot sprayed up one side to match the diesel sprayed up the other (actually does anyone else leak diesel from their filler?)

The soot doesn't really bother me so much. And yes, I always get diesel slop down the panel.

[JDNSW]

.......I'm still trying to find out what specifications the exhaust must meet...........

This is a prime example of why there is a labour shortage. Has anyone even tried to work out what proportion of the economy is complying with meaningless red tape - a lot of it trying to find out which bit of tape is applicable in any particular circumstance!

John

[Ben]

My compliance plate doesn't list ADR 9 (which I think then became 42 'General Safety Requirements').

Turns out ADR 9 was about "Automatic Transmission Controls". Repealed, but now incorporated into ADR 42.

The Road Vehicle Certification System website (http://rvcs.dotars.gov.au/) shows the ADRs applicable for MD1 vehicles (http://rvcs.dotars.gov.au/Applicability/MD1%20All.htm) from 1973.

That's where I got ADR 9 from, states it was mandatory.

[Ben]

Has anyone even tried to work out what proportion of the economy is complying with meaningless red tape - a lot of it trying to find out which bit of tape is applicable in any particular circumstance!

They certainly don't make it easy.

I just saw a 300TDI Defender's left exiting exhaust - it obviously doesn't meet ADR 42.8 and it was a '95.

[Blknight.aus]

in a non comercial registerd vehicle you can exit the exhuast from underneath the body work left right or rearwards providing its behind the rearmost opening in the side of the cabin work.

It must not face forwards or towards the ground at more than a 45 degree angle...

on a 110 like big red that means it can be anywhere behind the sliding rear window and must face out/back/down from there. (practially that limits you to behind the rear wheels)

ditto on a 90

on utes/dual cabs you can exit it in front of the rear wheels

the pipe must extend past the primary bodywork but not beyond the widest part/rearmost part of the vehicle (in my case the flares.

[rar110]

I'm sure the exhaust I bought from landrover last year didn't comply with that.

[Blknight.aus]

pics.

The ADR's dont tell the full story, there are different compliences for private, comercial, heavy, omnibus, specials, restricted use and on top of all of that there are minor changes from state to state...

Think of the ADR's as the minimum standard you have to hit to have a shot at it being legal and your wont go far wrong. Remember at the end of the day the ADR's are really guide lines for safety and how they read is up to the interpretation of the guy who does the checking on the day....

[Ben]

Is there an advantage to pointing the exhaust out the side?

Does straight back swallow too much dirt/mud/water when reversing or something?

[JDNSW]

As far as I can see the only advantage is to stop exhaust coming in.

A good example is when I bought my 2a, it was a full soft top - and the nonstandard (the seller had to do something with the front exhaust to get it registered in Victoria and it was rusted out anyway) exhaust, actually a somewhat modified S3 setup, pointed straight out the back; had a real problem with fumes getting in the back, fixed by bending the tailpipe a little so it pointed out the side about 45 degrees back.

Long since replaced with a standard 2a setup, straight out to the side.

In the case of a stationwagon, I can see little advantge either way, except straight back or down at 45 degrees would probably let a little less noise inside.

John

[KhunMoo]

Ben, when mine bit the dust, I had my local exhaust guy knock up a 2 1/2" straight through system. Worked a treat. I used a 2 1/2" Lukey sport muffler in the same location as the original and also fitted a s/steel flexi section near the front. More power, nice deep note and sounds like an old stationary oil engine when idling. Cool!

Cost about $350, plus about $120 for the muffler and flex coupling

KhunMoo

[Slunnie]

This is the one that I've just made for my SeriesII ute. Basically it goes straight through the PTO ports and out at the back.

https://www.aulro.com/afvb/images/imported/2009/03/336.jpg

https://www.aulro.com/afvb/images/imported/2009/03/342.jpg