1HDT w. 3" exhaust - incredible results

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

I'll try to get a recording of the sound with my cellphone!

Just recieved my 315/75-R16 Cooper Discoverer STT tires today :) Think the truck is gonna look sweet with those on there!

/Allan
 
Exhausts in diesels last forever anyway.

On a petrol engine they rot out from the inside due to the water produced in combustion.
Since diesel has a lot less hydrogen in it than petrol, the water is insignificant.

When was the last time you saw a diesel with steam coming out the exhaust?
 
I'd have to agree with the above. As far as we could tell, the exhaust Ateb pulled off was original and had no repairs or new parts, so basically 17 years old, and it was mostly intact, but getting tired. Granted it only had 137,000 km on it, most of which was put on in Japan, but based on that, I bet this new system lasts a long time. Ateb usually understates things so the customer won't be disappointed.
 
Exhausts in diesels last forever anyway.

You've never been to the northeast of the North American continent, it shows!!!

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I live in the area on the map bewteen the 4.3 and 4.0 acid rain zone, where it's bluest (more than 4 tonnes of salt used for roads per mile)

Actually in winter, the cars get so covered with salt the color is hardly visible, if you don't wash them twice a week.

We have a SERIOUS issue with rust here!

On a petrol engine they rot out from the inside due to the water produced in combustion.
Since diesel has a lot less hydrogen in it than petrol, the water is insignificant.

When was the last time you saw a diesel with steam coming out the exhaust?

Three or four months ago, during the last cold spell!!!
 
I'd have to agree with the above. As far as we could tell, the exhaust Ateb pulled off was original and had no repairs or new parts, so basically 17 years old, and it was mostly intact, but getting tired. Granted it only had 137,000 km on it, most of which was put on in Japan, but based on that, I bet this new system lasts a long time. Ateb usually understates things so the customer won't be disappointed.

My exhaust was old and tired as well but was perfectly fine in November 2006, after 15 years.

Now just after ONE winter in the salt belt, I have had to spend several days under the chassis to clean up all the NEW rust spots that formed where gravel and salt had hit the nice chassis finish.

Upon closer inspection of the exhaust itself, THREE weak spots were dicovered and it is leaking now from these three spots, basically at the seam, whcih is now a nice dark rust colour all along the pipe. And that, after ONE winter here!

That is why I will NOT install aluminized pipe on this rig, I do not intend to be go back to the muffler shop in 4 years, nor will I accept to install stainless steel expansion joints that are welded to... Mild steel fittings, like the junk they sell at Crappy Tire!

I have been looking into COPPER as an exhaust pipe material. So far I have not made a move (copper is much cheaper than stainless steel, plenty of second hand 3" drain pipe to be found in older buildings, and it's easier to work with than steel) because of the metal fatigue issue and the galvanic corrosion between steel and copper.

But I'm still thinking about it, haven't said my last word!
 
Exhausts in diesels last forever anyway.

On a petrol engine they rot out from the inside due to the water produced in combustion.
Since diesel has a lot less hydrogen in it than petrol, the water is insignificant.

When was the last time you saw a diesel with steam coming out the exhaust?

I mostly agree with this, but you obviously haven't been in Alberta in the winter. There's steam at -20 C...

-kevin
 
I know you don’t know cost exactly, but what is the approximate cost for this set up? I have the 1-HDT and would be interested in doing this if it is reasonable.
 
I know you don’t know cost exactly, but what is the approximate cost for this set up? I have the 1-HDT and would be interested in doing this if it is reasonable.

Parts wise the muffler is listed at US$200-250 at the company's website, plus piping.

I had priced 2.5" exhaust pipe a few years ago at around $10 a foot for 304 grade, haven't called for recent prices yet for 3", probably around $25 a foot I presume (don't take my word for it it's a wild guess).

OTOH, Louis told me he can have a SS exhaust made for $500 in the Ottawa area, just don't know the details, probably just 2 1/4 straight pipe though. I'll PM him on that.
 
My guess would be $800 CAD in parts and the same in labour for aluminized steel . Yes, that's how we spell "labor" in Canada. ;)

I think I'm going back to just making my own. I already have a 3" Aero turbine muffler with resonator sitting here staring me in the face.

I hate exhaust work but it's brain-dead simple and over-priced because it's so labour-intensive to do it nicely.
 
If I was faced with paying $3,500 for an exhaust I'd definitely buy a welder and have it pay for itself doing the job.

BTW, does anyone know how to bend pipe without the kinks the standard benders do? I read soemwhere that if it was bent with high internal pressure (hydrualic?) the pipe would not squish down like it does with the standard tube bender. Any thoughts?
 
Buy the pre-bent bends. Then weld them to the straight pieces. That's how the exhaust shops get mandrel bends...

-kevin
 
I mostly agree with this, but you obviously haven't been in Alberta in the winter. There's steam at -20 C...

-kevin

Obviously I haven't, check out my location.
We get close to -10C here, -17C was the record where I grew up. Can't remember seeing steam then but I wasn't looking for it either.

No salt added to the roads here, but I'm currently living on the coast where nature provides plenty. Even brand new bolts sitting inside my house start to rust after a few weeks.

The proper mandrel bends are made by first bending the tubes the normal way, then pulling a large greasy ball through the tube to even out the bends.
Very few outfits are setup to make those to order in one piece, but they do exist. The rest weld in sections of "donut" to make the curves.
 
encouraging results. I am planning to put a 2.5 or 3" exhaust in my Prado (2LTE) soon. Approximately what did this change cost; I will get quotes from a couple shops here in smithers and want to be able compare.


why u dun try like this front from turbo 2.5inch and middle to end put 3inch, the power is better then total 3 inch,
i last time try with this, the power is better then total 3 inch
 
Had the same brilliant results with my 12H-T. Spooling up alot quicker.

i also got same engine with ya, be4 i got try like this

1st method, from turbo to middle 2.5 inch and middle to end is 3inch, no mid box just rear muffler,

2nd method total 3 inch , no mid box, just rear muffler too

end up the 1st method power is more good pick up, and the max speed is same with 3 inch total lenght

with original turbo, just with higher boost, and adjusted fuel pump:cheers:
 
Buddy here do a 3" exhaust in his 1HD-T boosting 14 PSI straight pipe and the performance .. it's like a WRX Subaru .. very impresive !

He kick my ass in my HJ-60 2H Turbo intercooler boosting the same 14 PSI .. :eek:


the 1HD-t is that 12valve turbo? very powerful engine but compare with 12H-t, i think 12H-t is more power, as i test car with these engine, i own a 12h-t just higher boost adjusted fuel pump, test with 1hd-t boosted and adjust fuel pump, front till end the pickup was behind, the 12H-T auto pickup is danger, very fast
 
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Buddy here do a 3" exhaust in his 1HD-T boosting 14 PSI straight pipe and the performance .. it's like a WRX Subaru .. very impresive !

He kick my ass in my HJ-60 2H Turbo intercooler boosting the same 14 PSI .. :eek:


the 1HD-t is that 12valve turbo? very powerful engine but compare with 12H-t, i think 12H-t is more power, as i test car with these engine, i own a 12h-t just higher boost adjusted fuel pump, test with 1hd-t boosted and adjust fuel pump, front till end the pickup was behind, the 12H-T auto pickup is danger, very fast
 
Buddy here do a 3" exhaust in his 1HD-T boosting 14 PSI straight pipe and the performance .. it's like a WRX Subaru .. very impresive !

He kick my ass in my HJ-60 2H Turbo intercooler boosting the same 14 PSI .. :eek:


the 1HD-t is that 12valve turbo? very powerful engine but compare with 12H-t, i think 12H-t is more power, as i test car with these engine, i own a 12h-t just higher boost adjusted fuel pump, test with 1hd-t boosted and adjust fuel pump, front till end the pickup was behind, the 12H-T auto pickup is danger, very fast
 
the 1HD-t is that 12valve turbo? very powerful engine but compare with 12H-t, i think 12H-t is more power, as i test car with these engine, i own a 12h-t just higher boost adjusted fuel pump, test with 1hd-t boosted and adjust fuel pump, front till end the pickup was behind, the 12H-T auto pickup is danger, very fast

Yap it's a 12V turbo .. 4.2.

Fact. I have both engines .. in my 60 have a 2H with turbo and intercooler boosting 14PSI and in my 80 series have the 1HD-T boosting 10 - 12 PSI without intercooler and advanced timing in the pump.

I have no chance with my 2H turbo intercooled with my 1HD-T lees with my buddy 1HD-T
 
Anything is possible with respect to that old muffler! I didn't ask Ateb to autopsy it, however. I'll post new fuel consumption data once I have it. But even with my old system under ideal circumstances I was able to achieve my best fuel economy figure of nearly 26 mpg on more than one occasion.

I think why Crushers asked was because you had a few MPG threads complaining about your mileage a while ago..... Asking about fuel settings and gearing.
 
Yap it's a 12V turbo .. 4.2.

Fact. I have both engines .. in my 60 have a 2H with turbo and intercooler boosting 14PSI and in my 80 series have the 1HD-T boosting 10 - 12 PSI without intercooler and advanced timing in the pump.

I have no chance with my 2H turbo intercooled with my 1HD-T lees with my buddy 1HD-T

hehe so what different with 12H and 2H??
be4 my car engine is stock 12H-T, just boost to 1.9 bar and adjust fuel pump, the car run like hell can run 160kmh hehehe never try more then that i scare later i run off road after wards hahaha

now thinking modify the fuel pump, inline mechanical fuel pump, got any one can give me information? which can modify to racing spec??:cheers:
 

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