03 upgrade turbos?

[CATCRACKER]

i have to remark now to stop the 02 CTD and below owners to stop reading this post before it is to late or this conversation will occur with your wife in the near future"honey i want an new 03 ho eth dee i can get 500rwhp easy,also honey,this motor just broke the world record":-{}



hey it happend to me i went from looking for a used 02 to ordering a new 03. (loving every freaking minute of it) reading anymore of these posts is going to get you. it got me. but what the hell life is short buy you an 03 become your own warranty station get dd3'd chip and cluthc hx40 and a good divorce lawyer. :-laf



P. S. random post but i am just trying to help

 

[DIESELMAN]

Originally posted by KLockliear

The test truck went up Potosi (7%) at 75mph pulling that load.

 

[MCummings]

Just a quick Q...



So the average guy on the street will be okay with a 60-80HP box w/boost elbow and he should still maintain safe EGT?



TIA

 

[Greg Boardman-RIP]

Originally posted by MCummings

Just a quick Q...



So the average guy on the street will be okay with a 60-80HP box w/boost elbow and he should still maintain safe EGT?



TIA

Yes, no problem. I have seen 1200* but that was pushing as hard as I could with a 540 John Deer on a trailer uphill.

 

[BPINE]

Originally posted by KLockliear

The test truck went up Potosi (7%) at 75mph pulling that load.

Well it looks like I need a new truck then.

 

[Fred Swanson]

Blair, they even come in RED!

 

[d90boy]

An upgrade turbo is my single biggest concern with the new trucks. I just ordered one today so in 6 weeks or so I will want to know there's a solution available. I talked to ATS and they indicated they would have a manifold for us so that's a relief. It seems a major concern is clearance for a larger turbo in the stock location. Has this been an issue Keith? Also I was wondering about the effects of the turbo not being in the middle of the manifold anymore. I thought at least on the earlier motors they used a twin scroll exhaust housing that was divided into two passages. Is this no longer the case and what effects does the turbo not being centered anymore have?

 

[KLockliear]

While the new location makes an aftermarket turbo require a different air box and pipe, we have not had problems with it.

 

[jwilliams3]

The Exhaust manifold is dual scrolled and balanced on the 03, but the turbine housing is not.



The stock manifold can support up to a 21. 5cm2 turbine housing without space concerns.



--Justin

 

[qzilla]

Stock Turbo

Just spoke with a customer, who is a TDR member btw! He's been towing with a stock exhaust and turbo, and airbox. He tows large travel trailers across the country. He will be on the dyno in the very near future, but he should be around 370rwhp and he has not seen over 1150 pre-turbo. This is on a HO 6spd. He sees a little over 35psi. When he gets final numbers I will let you know, but this somewhat negates the 330hp theory?



Quad

 

[KLockliear]

I'd check that gauge Quad. What kind of power did that one make stock? Ours made 285. If his was making less power, it would have less EGT as well. Good luck there.

 

[KLockliear]

Re: Stock Turbo

Originally posted by qzilla

but this somewhat negates the 330hp theory?

Quad

Believe what you want, but it's not a theory, it's R&D.

 

[BPINE]

Originally posted by Fred Swanson

Blair, they even come in RED!

Why you can't beat that Fred, in reality mine is going to have to last a while longer, it just turned over 100k so it is still a baby. I will tell you one thing I can not pull my trailer 75 mph over a 7% grade that is for sure. Hey Kieth I would assume the truck you are talking about has a 5th wheel hitch in it so would it be possible to take my trailer for a spin with the DD truck when I am there in May?

 

[qzilla]

Keith,



I am not saying that your research is wrong, nor am I saying my research is any different. What I am reporting on what is happening in real life on a real customers truck. I don't know what gauges he is using as he did not purchase them from me! I believe he said his truck was around 265hp stock? I agree if he dynoed less than what you did his exhaust temps could be a little less, but I seriously doubt that his exhaust temps would be drastically different than anyone else. Maybe he just has a great box!



On another note I am not even contradicting what your research has shown you. I know you do a lot of testing and you have a great reputation! I am just giving people another point of view.

 

[KLockliear]

I agree. Just seems odd that one guy with 100hp more than stock, with the stock turbo/airbox/exhaust can have temps that low. What were they stock? Our HO would make 1200* or so stock, going up that 7% towing 15k.

 

[Fred Swanson]

Keith, stock mine would do the same. Heck I could hit 1200 in 5th with the foot to the floor. Towing 14K to California and around Phoenix, I could hit 1200 pushing it hard. That was with about 32psi of boost.

Now with the EZ, 5 inch exhaust and filter, pulling long grades with the 14K in tow, I can keep the temps under 1200, but not by much. And definitely not with the foot to the floor.

This turbo would appear to be close to the HY used on 01,02 autos. I can't see it surviving very long with more than mid 300 HP. Wasn't that about the same number for the HY?



Oh yeah, Autometer Phantom Pyro mounted pre turbo, and I know Greg Boardman's numbers are with the same, Autometer Phantom gauge.



Greg, what's it doing with the EZ and the air filter on your '03 CA 235 HP motor?

 

[KLockliear]

That's about what I figured Fred. However, the guy Quad is talking about should have your truck by 50hp or so (he said 370)... so you'd think the EGT's would be hotter.



This turbo is just like an HY.

 

[d90boy]

What is the outlet size on this HY? Is it bigger to coincide with the larger elbow?

 

[qzilla]

I think he said around 1200 or even a little more on some hills under heavy loads.



A couple of things to consider here.



1. ) He is not trying to get max egt out of this truck. He is simply towing large trailers like he normally does. With the addition of more power he is able to keep the exhaust temps down because it tows so much easier. I am sure that if he stopped at the bottom of a 6% grade loaded and tried to drag race up it and never lift off he would have egt problems. I think you could even get a stock truck in a stick situation like that.



2. ) He is makeing over 35psi of boost. I don't know how much because that is all his gauge reads. That is a lot of air for the motor. I am sure that the ability to produce that kind of air makes exhaust temperatures fall!



3. ) He is running electronics only! Maybe the addition of injectors are worse for egt's? In my experience the injectors we have done seem to produce more heat than a similar electronic update.



That should give us something to chew on.



Quad

 

[KLockliear]

Originally posted by qzilla

He is not trying to get max egt out of this truck. He is simply towing large trailers like he normally does. With the addition of more power he is able to keep the exhaust temps down because it tows so much easier. I am sure that if he stopped at the bottom of a 6% grade loaded and tried to drag race up it and never lift off he would have egt problems. I think you could even get a stock truck in a stick situation like that.

Ahhh, now I understand. See, we always do "worst case scenario" testing, which means big load, full throttle, how hot can it get. I'm sure if you were trying to deal with EGT, you could have much more total power, you just wouldn't be able to use it all, and still have the stock turbo.



I'm sure our 03 truck would have been street driveable at 400+ with the stock turbo if you weren't asking for much out of it.