1HDT w. 3" exhaust - incredible results

[Martin White]

I should have taken some pictures before I took it off road, but I went out to Chilliwack to check out the Fraser and got things a bit dirty. I still have a hard time believing it's the same truck. Now I really wish I'd dyno'd it before the change, but I'm VERY VERY happy. It's really a different truck now.

Someone asked above why I went with the aeroturbine....basically because Ateb recommended it and they have not steered me wrong on anything they've done to my truck or recommended so far.

 

[83bj60]

Congrats, Man! I've got one in the plans for mine as well, as the stocker is starting to get long in the tooth

Any cost estimates? Even a rough idea?

 

[Entaran]

Last time I paid an exhaust shop to make me a 3in exhaust of similar length out of mild steel it cost me about 900 dollars.

It'll be cheaper without a cat or as many mufflers tho.

That's here in aus...

 

[NZcruiser]

so Martin, from what I can see in the pix there's just one muffler in the whole system right? Everything else is pipe? Or is there something else right on the end where it exits the back of the vehicle? Also any reason why there are two close welds in the straight pipe section under the front door, or is that what they had to do to join it?

 

[Adam B]

Yeah....that looks like maybe it was cut too short and extended but it doesn't make any difference at all. Looks like they got the muffler as high as it can be and routed things pretty nice. Nicer than they did on their own truck.

NZ: it's just tube, a flex joint, and a muffler with built in resonator.

Any chance of you taking a picture from under the hood of the connecting flange at the turbo elbow? I'm curious whether they sort of cheated there and welded to the 2.5" part that is already attached to that flange or if they actually cut it off flush, bored out the hole in the flange to 3" and went from there...

 

[RHINO]

this is good news for me gents, i got a 3" stock exhaust off a ford superduty and i am cutting and welding it back together for my pig, maybe.

 

[Martin White]

Yes just one muffler - an aeroturbine 3030 with resonator roughly in the middle of the system, mounted high and well protected.

 

[83bj60]

Any chance you could post a sound clip of the new exhaust?

 

[mreekster]

how much was it and is it stainless or aluminized steel?

 

[83bj60]

I suggest you read the whole thread, it's really interesting! As for cost Martin hasn't figured the price yet since he had other stuff done as well at that shop. The Aeroturbine SS 3030XL (3"inlet and outlet with resonator) retails for US$249 on the company website, add to it probably something like 14 feet of 3" SS pipe and the job to bend it over all the obstacles, it's not going to be cheap!

I'll be shopping around in the next few days and hope to find a shop willing to do it the way I want it (if you look hard under the HDJ81, it's possible to simplify the exhaust routing).

 

[Martin White]

The muffler is stainless. The rest of the exhaust is aluminized steel. This is not going to be cheap no matter how you figure it. I know that a full stainless 3" exhaust in Japan is upwards of $2500 + install and taxes.

 

[Nielsen]

I'm planning on doing a 3" stainless exhaust on my HDJ80 within the next couple of weeks.
I'm not going to use any muffler and the exhaust is gonna exit in front of the right rear wheel.

As of right now I'm running the stock exhaust with only one muffler.
It makes the sound of the turbo spooling up quite a bit more noticeable.

I'm also hoping to get my exhaust temperature gauge installed before the 3" goes in.
This way I'll be able to see what kind of change in temperature it makes (If any).

I'll post some pictures and data as soon as it goes in

 

[83bj60]

The muffler is stainless. The rest of the exhaust is aluminized steel. This is not going to be cheap no matter how you figure it. I know that a full stainless 3" exhaust in Japan is upwards of $2500 + install and taxes.

Aluminized Steel! Shocking!!! You disappoint me, Martin I can't believe SS tube is the deciding factor in the final cost!

Several years ago I priced the 2.5" tube required for my old BJ60 at less than $200 (around $10 a foot then from a stainless steel supplier, 304 grade, 316 was more expensive [and too hard to work with apparently])

So why did you accept Aluminized Steel? Here in the salt belt pothole territory, it lasts no more than 5 years!!! Actually, I remember back in the days when some car manufacturers offered lifetime warranties on the whole exahust system, my neighbour had his exhaust system replaced for free FOUR TIMES over the 12 years or so that he had his car

 

[83bj60]

I'm planning on doing a 3" stainless exhaust on my HDJ80 within the next couple of weeks.
I'm not going to use any muffler and the exhaust is gonna exit in front of the right rear wheel.

As of right now I'm running the stock exhaust with only one muffler.
It makes the sound of the turbo spooling up quite a bit more noticeable.

I'm also hoping to get my exhaust temperature gauge installed before the 3" goes in.
This way I'll be able to see what kind of change in temperature it makes (If any).

I'll post some pictures and data as soon as it goes in

And a sound recording of the exhaust before and after, pretty please!!!

 

[Martin White]

Cost was the deciding factor. Ateb tells me it should last 8+ years, which is okay for me. I doubt I will have this truck more than another 5 before I get something different.

 

[Martin White]

Hmmm just reading the above it doesn't sound quite right. By something different, I'd probably get a heavy duty offroad rig I wasn't too concerned with for cosmetics (like a 70 series) and maybe a Honda Accord diesel for DD.

 

[Adam B]

A few things that might help others understand...

- ATEB cuts and welds pre-bent u-tubes. No bending labour but lots of welding, fitting, welding, grinding, welding, etc.

- Stainless tube is expensive and most of us don't have TIG welders. Clamps suck.

- Aluminized steel can easily be welded with a MIG, and in an application where it is a couple of feet above ground and easy to wash, it will last a long time.

 

[70sguy]

Stainless is pretty hard to justify here in south west BC where aluminized lasts a LONG time prividing you keep your undercariage clean.
I got John at ATEB to estimate a complete 3" stainless system for my 80, using prebent elbows tig welded together with a Aero Turbine and it was going to be $3500 all in, which I just couldn't justify.

 

[83bj60]

According to the muffler shop I usually go every 3-4 years, 4 years is about average right here for aluminized pipes while stainless steel lasts about 8-10 years.

Why? Not only corrosion at the seam and in mufflers, but a lot of it has to do with our harsh road conditions: I'm told that is the main reason most SS exhausts eventually fail, metal fatigue.

You can be sure my next exhaust is going to include an easily replaceable and very flexible flex joint between the engine and the main pipe. I also believe that the larger and shorter pipes with less curves and less inertia (would love to reduce or eliminate the muffler if I could, where's that sound?!) should survive better being manhandled on the rough roads than smaller diameter pipes.

 

[Martin White]

The sound of the new system I can describe as a somewhat throaty rumble. It's most noticeable sitting outside the truck. Inside you barely notice any difference. I didn't want this thing to be loud and I'm happy about that too. You can hear the turbo a little more now, but not much.