Engine/Transmission (1998.5 - 2002) New turbo and need exhaust brake.

[HookMeUp]

I am considering getting a HTT HTB57-12 turbo. What are my options for an exhaust brake. I would like to get one that mounts to the turbo.

 

[SRadke]

Are you aware that turbo is basically a stock replacement and will not show any performance gains?

 

[HookMeUp]

I did not know that, guess I better look at something else.

 

[Forrest Nearing]

that's not necessarily true, it's a more efficient compressor and a much more free flowing turbine wheel.



it's also overpriced by most vendors as it's a shelf stocked BW unit. don't pay more than $1000 for it. but really, you'd be way ahead of the game adapting an HE351 off of an 04. 5-07 truck on yours. you can pick them up for a few hundred dollars. 60mm compressor, great spool up, exhaust side flows better than the HX35-12, etc.

 

[PC12Driver]

I wouldn't call it a stock replacement. It'll keep 425hp at less than 1350* @ 40psi and still keep a good bottom end for towing his camper. A combo of Jammer 1s and a VA isn't anywhere near that hp, so it would be just fine. Consider his needs before you scare him into something that throws away bottom end for no reason.



To answer the original question, a 3rd gen exhaust brake can be adapted to fit those turbos (not sure what's involved - there's a few members with them in their sig lines around here though). Any reason you're against an inline brake?

 

[Forrest Nearing]

a 3rd gen brake will fit if you spec a 3rd gen exhaust outlet.



I still vote for the HE351

 

[SRadke]

It'll keep 425hp at less than 1350* @ 40psi

I have to call BS on that. A 64/14 won't maintain 1350* at 425hp. I had a 75mm S400 in a twin kit that would but no way you're doing it with a compressor smaller than 60mm. If you could why would an OTR truck with an N14 in it have a turbo that flows twice the air with a 425hp rating.



I do agree on the inline brake though. They really work quite well.

 

[bmoeller]

I have to call BS on that. A 64/14 won't maintain 1350* at 425hp.

Depends solely on elevation. It will here @ 700ft. Grossing 28k, I've never seen over 1000* with the 12v. Lag is HORRIBLE above 5,000 ft.

If you could why would an OTR truck with an N14 in it have a turbo that flows twice the air with a 425hp rating.

Displacement and total CFM. Comparing a 5. 9L with a 14L is apples and oranges. A 14L would choke on a small turbo.

 

[PC12Driver]

I have to call BS on that. A 64/14 won't maintain 1350* at 425hp. I had a 75mm S400 in a twin kit that would but no way you're doing it with a compressor smaller than 60mm. If you could why would an OTR truck with an N14 in it have a turbo that flows twice the air with a 425hp rating.



I do agree on the inline brake though. They really work quite well.

There was a thread a few years back from a fellow with a 57/14 that was a little smokey and laggy for his taste, so he downsized to a 57/12. Most folks said that his 80hp injectors and Comp (right around 425hp) would run to hot with that turbo. EGTs ended up dropping a little (to a peak of a little over 1300*) and he gained some bottom end after the swap.



If he was sledpulling I'm sure egts would be higher (ironically, he was pulling a trailer with his snowmobiles in it - so I gues he was sledpulling of sorts). But for a street truck, the HTBG does just fine. Especially for towing.

 

[HookMeUp]

I am not totally against an inline e-brake. My only concern is that it is under the truck and would catch all kinds of dirt and garbage, mainly a corrosion issue. Everywhere I have looked this turbo is around $1300 - $1500, if you know where I could get for $1000 let me know! I figure it has to it least flow better than stock, and the 12cm dual volute exhaust should flow like a 14cm single volute.

 

[SRadke]

Displacement and total CFM. Comparing a 5. 9L with a 14L is apples and oranges. A 14L would choke on a small turbo.

Absolutely not apples and oranges. If you're trying to make 425 hp it takes a certain amount of fuel and air to do so. Whether you have big displacement with high torque and low rpm or small displacement with less torque and high rpm.



The air required to cool that amount of fuel doesn't change and you exactly make my point with your statement. A 5. 9 would choke at 425 hp with that turbo just the same as a 13 liter would choke with the same turbo. It just doesn't flow enough air for that job.

 

[SRadke]

I've had my inline brake for 5 years on 2 different trucks and have never had a problem with it. They're also cheaper than direct mount brakes.

 

[DCreed]

I am not totally against an inline e-brake. My only concern is that it is under the truck and would catch all kinds of dirt and garbage, mainly a corrosion issue. Everywhere I have looked this turbo is around $1300 - $1500, if you know where I could get for $1000 let me know! I figure it has to it least flow better than stock, and the 12cm dual volute exhaust should flow like a 14cm single volute.

S300G 57/65/14

Borg Warner S300 series - turbodaves

 

[PC12Driver]

Absolutely not apples and oranges. If you're trying to make 425 hp it takes a certain amount of fuel and air to do so. Whether you have big displacement with high torque and low rpm or small displacement with less torque and high rpm.



The air required to cool that amount of fuel doesn't change and you exactly make my point with your statement. A 5. 9 would choke at 425 hp with that turbo just the same as a 13 liter would choke with the same turbo. It just doesn't flow enough air for that job.

Look at it from the other way: if you put a BHT3E as a single on a 5. 9 with fueling for 425 hp, what would you get? There is more to it than X turbo is good for Y hp.



Regardless, Clmsnow's truck (in my link above) proves that a 57/12 works just fine on a street truck with that fueling.

 

[blacksheepdiesel]

SRadke,

The N14 and B5. 9 are two totally different ways to make 425hp and use completely different amounts of fuel and air to do so. Ever hear of a N14 getting 20 mpg unloaded? Or even 11 mpg towing?

Godspeed,
Trent

 

[SRadke]

They aren't as different as some choose to believe. Ever seen an N-14 in a 7000 pound truck with the same aerodynamic drag as a pickup? It just may get 20 mpg.

I'm not saying a 5. 9 would run good with a single 3b. What I am saying is with enough rpm to generate airflow it will spool and it will make 425 horsepower with safe egt's.

 

[darkhorse]

Just thought I'd throw this out: my 14cm ported Dodgezilla cools my set up fine both empty & in moderate towing (3 t0 8k). It's a very quick spool too.