Correction... Turbo(s)



http://www.turbobygarrett.com/turbob...ge_Cummins.htm

Ball bearing... Water cooled...up to 70lb/min...

Sounds good to me.

It's nice to see one of the "big guys" FINALLY addressing the Dodge Cummins market.

Meanwhile, Turbonetics is still as obtuse as can be....

jh

 

who cares, hohn?? what matters is when you're gonna get one!

 

I saw them a couple of months ago for the first time. I figured they would be $$$$.

 

Lesseee.

Me being a GI isn't conducive to lotsa big dollah spendage, you get me?

I'm guessing these are so far North of $2k that the sun never sets.

There's a REASON my truck only has what it does and no more.




I like to call her "Dear"

 

I considered one of those before making a standard thrust-bearing garrett purchase. The standard rebuild for a GT37R? $1100.

bnroand.

 

_____________________________


^^^^ That sig kills me

 

Wondered if someone would notice. Hehehehe...

brandnon.

 

i talked to the guys over at mass diesel and they are saying that tis turbo is really nice and is running about 1600 for the stage 3 kit

 

Thats what I paid for mine. Its a nice turbo but its not much bigger than the typical HX-40. I'm almost there with building mine, I'm just have to find some fittings for the coolant lines and I'm there. Someone is suppose to be modifing garrett to fit some part of the HX-40 turbine housing. I just tried to fit HX40 housing on the garrett. You can make it work, but beyond most normal garage stuff. I think my 3b/garrett combo will be pretty sweet set-up. I have about $2.5k into this project. There are a few different turbine housing available for the garrett. I haven't priced them out yet. The wastegate flapper diameter is smaller than my PDR HX-40 and its bit more work to get in there and massage the passage to improve the flow quality.

 

Mike its Turbo Re-Source, and I just went back and checked the article. The project between Turbo Re-Scurce and Peak Diesel Performance ( Piers Harry). Will be a Twin set up using Garrett Ball Bearing turbos top and bottom. Mike I also have a Stage 3 Garrett with the hx-40 housing just waiting to go on my truck. Also some new stixs. Just had spine surgery so that is holding up the install. Tom the owner of Turbo Re-Source say I should have no problem making over 500rwhp with this turbo. Will be talking to him on monday will try and find out more about the twins.

 

I guess I'm gonna have to bug Tom when I talk to him. He's looking into a Tial housing for my GT42 for my twins. Maybe he will spill some secrets . . .

 

I was thinking here, its more of a mind fart but how about if you put a turbonetic liquid/air intercooler just right after the primary turbo? I bet that this would cure the air choking issue that occurs by using a smaller air flow secondary and large flow primary. Cooler air/ denser air, less air velocity, less dP drop thru the trucks air/air intercooler. You could use a smaller secondary than normal and this would off set the slower spool-up on using the intercooler. The trick would be on finding the right size and not over kill (reduce the intercooler effectiveness on the air density). Looking at the turbonetic diagrams that I got you could put into the engine coolant loop, and just add an extra liquid pump, tank and cooler. All pretty easy stuff considering that you could put the new liquid incooler ontop passager fender where the stock air box was. I bet that it would even help when towing, giving you extra cooling ablity. I'm going to look into this abit more.

 

I proposed that very thing in my old "BB twins!" post.

The effect of interstage intercooling is simply to drop the amount of pressure the secondary sees and it helps efficiency of the twins overall.

Because you're dropping temps, you won't have to run the primary as hard to get the same amount of air to the secondary. Instead of running 35-40psi in the cold pipe (Cold! Yeah right!) with a discharge temp over 350º, you could drop the pressure down to 30psi or so on the cold pipe and get the same or more oxygen to the secondary.

Since it takes less boost pressure to get the job done (always a good thing) you can now run a larger housing on the primary and drop your drive pressures some. With a GT4202, that means the 1.28 and 1.44 A/R housings are a viable option.

I figure a good liquid-to-air CAC could drop primary discharge temps to no more than 200ºF.

With a good setup like this, you could do 575hp at 2700 rpm with a mere 52psi of boost. You might even get there on stock HG and studs!

jmo

 

For the air-water IC I'd tee into the return line from the radiator to get the cool water and return it just after the T-stat, with an electric water pump. So no need for an extra reservoir etc. Plumbing should be easy, you can go along the rad. support, and place the pump below the pass. side battery.

Just my 2c

AlpineRAM

 

The power requirement for the secondary drop when the inlet temperature is less. Your inlet pressure will also drop, but you still have the same mass flow. I'm planning on running an independate cooling system just for the liquid intercooler. This way your not heat soaking (heating up the air) with coolant temps. Coolant at ambient temperature will cool better and you will get more intercooler effect. I'm planning on putting in a rad about the size off a small car with electric fan. Run an electric pump. I might even run my garrett BB turbo on the intercooler coolant system for when I pull my trailer. It might heat up the intercooler some, but the benieft is that the turbos are cooler and lasts longer. The new garrett 3788-2R is one sweet turbo. I shut-off the truck, its still spins for about 30 seconds. The 3b stops almost instantly. The garrett spools like a rocket, I can pull 20 psi in the time my old 40 was getting to 10 psi. EGT's are lower, less smoke. In a couple weeks I'm planning on trying the GT4294 as the primary vs my 3B. I want a twin turbo set-up to spin the tires off the line (non boost launch) and still pull you hard at the end rpm power band. This at 3300 ft elevation.