Engine/Transmission (1994 - 1998) D-TECH, D-TECH TURBO or 3-Piece Exhaust Manifold

[Reddog1]

1 Does anyone have positive or negative experiences with this company?

HTB2 Turbo or Phat Shaft - D-Tech Turbo Diesel Power Source



2 Has anyone any comments on their HTB2 style or Phat Shaft style turbo (62/12cm), used as a single?



3 Does anyone have any experience with their 3-Piece Exhaust Manifold?



3-Piece Exhaust Manifolds - Diesel Power Source





Wayne

 

[zstroken]

I am still awaiting a response from them. I have ran several HTT chargers. What kind of HP you looking for I had a 62/12 on my truck and was towing 12-13K around with 3. 54 gears, and 33" with very good luck.

 

[Reddog1]

I am OK with the power, but would like to reduce the EGT and smoke, especially the EGT. I do not know what my HP is. With the info below, do you have any idea?

2WD ‘96, Automatic (DTT), with 3. 54 gears (19. 5 tires/wheels)
#10 plate
boost elbow
370 injectors
Timing at 16*
3KGV spring kit
60-lb (as I recall) exhaust valve springs
Marine Head Gasket
4" exhaust and muffler (3” turbo through 3-inch US Gear Exhaust Brake to 3” resonator)
BHAF
Between 25 to 30-psi boost maximum.


Wayne

 

[Forrest Nearing]

why are you running the boost so low?

 

[zstroken]

I would bump it up a little, but I know my HX35 if I run it at 32 psi or so on a climb it will start to build heat in the engine.

I would put an HTBG with a 12cm or 14cm. Based on if your wanting some more rpm power or a little faster spooling.

 

[WDimig]

i would guess, 350-maybe 400 hp with your current setup, i would bump the boost, maybe around 38-40, that will help you egts, and smoke a bit.



wes

 

[Reddog1]

I really appreciate your responses. I am getting ready to spend quite a bit of my beer fund, and your input is appreciated. I have been away from this stuff for about four years.

Actually, I can only run it at 20 to 25 PSI on a relatively steep climb, because I have to back off to keep the EGT below 1300 (before turbo). On a real long steep grade, I have to gear down due to EGT, not loss of power power.

Would I run the screw on the boost elbow in or out to increase the boost, or will it even effect the boost? I am thinking in to increase boost.

I think I am OK with the spooling, but need more RPM when climbing. Cruising on the HWY, I have no problem. With a full acceleration, EGT climbs real quick.

On a flat HWY, with my Truck Camper loaded (total weight 10,400 lbs. ), cruise control set at 60 MPH and the outside temp at 50-degrees, I had the following:

US Gear trans in direct (3. 54); RPM 1500, boost 5-psi, and EGT 750.

US Gear trans in under (4. 10 about); RPM 1920, boost 8-psi, and EGT 700.


As a side note, I run this exact HWY (about 260-miles) every week, and have for four years. Sometimes I put a few extra miles on in a week, not often. I run the 3. 54 gears, usually at 70 MPH (sometimes at 75), fuel at the same station, have speedo GPS calibrated, and check the MPG each fill-up (same station). The MPG did not change . 5 MPG running at 60 MPH (130 miles), compared to 70 MPG (130 miles). I fill to the top (no bubbles) and calculate manually. I found that interesting.

Does everyone agree with WDimig on a guestimate on my HP?


Wayne

 

[WDimig]

i think i had misread your initial post, if your looking to get a turbo of the htb2 (s300) variety, i would reccomend the 62/12, it is very responsive, and will keep you egt's in check for the setup you have right now, i may have been a bit high on your HP #'s, but i would venture to say that if you were to upgrade to a 62/12 turbo, and a 3 piecie exhaust manifold, you wont be too far off those numbers then.



wes

 

[Reddog1]

I am hoping to retain the 3-inch down pipe. Second choice would be to use the 4-inch down pipe to my remote 3-inch exhaust brake, with my 4-inch from there out the back.

Wayne

 

[zstroken]

If you have to stay with the 3" Look into a HTT 60mm/14 conversion. It is an HX35 with a 60mm(HX40 wheel) and then has a 14 cm wastegated housing.

 

[Reddog1]

zstroken - Thanks for the suggestion. I am leaning that way.

You say you are still waiting a response from them. Have you ever done business with D-TECH before, or know someone who has? The exhaust manifold appears to be a good price.


Wayne

 

[Vaughn MacKenzie]

Swapping out the 370 injectors for something else would help with EGTs too, such as DDP 3s.

Vaughn

 

[Reddog1]

Thanks for the suggestion Vaughn, I have given that thought.


Wayne

 

[BTilson317]

i def. agree i currently run the 90HP DDP and 6 plate tst, arc flow, stock charger... at 42psi. 4000 gov spring kit is amazing on the towing end. . you have the perfect setup so far but 370's have got to go. . DDP bang for the buck low egt's, no hazing, better mpg. . get back to me on this topic i'd like to hear your thoughts

thanks red dog

 

[Reddog1]

BTilson317 - Which turbo are you running?

Wayne

 

[TLe]

I can't speak for single turbos, but I am running their twins right now, and it uses their turbo as the top one and their manifold. It's been a great setup. I have no complaints, and I beat the tar out of my truck.

 

[Reddog1]

TLe - Thanks for the reply. Did the manifold fit properly, and was it painted? Would you buy from them again?

Wayne

 

[BTilson317]

reddog im running the stock charger right now... sounds dumb but hey, ive been thinking about a 62/12 phat shaft?... what you guys think

 

[Reddog1]

reddog im running the stock charger right now... sounds dumb but hey, ive been thinking about a 62/12 phat shaft?... what you guys think

I must admit, I expected a lot more input. I really appreciate the responses I received, but I expected more.

I, for one, do not think a stock turbo is dumb at all. I think it is a matter of what you want to do. If I pay attention as to where my right foot is, my stock turbo does OK. I cannot use all of my power, but not to the degree I have to hang my head in shame. With my truck empty (6200 lbs), using a stop watch, I can do zero to 60-MPH in seven to eight seconds.

I have a couple of bucks to spend on my truck, and can afford a new turbo. My turbo has over 230,00 miles on it, and I could do with a little less smoke in the winter months, when I am loaded with my truck camper (10,400 total).

I hopped for several suggestions on perhaps the HTT H-CHARGER 60/14W Stage III quickspool hybrid HX35/40W HOLSET TURBOCHARGER 325-415 HP 60mm compressor, 14 waste gated turbine housing. Or maybe the 60/12.

I expect to have my 3-inch exhaust brake as a limiter on turbo size. That does not mean I cannot go bigger, I just do not know what the consequences would be. I will call a vender and see what they suggest.

I really hopped Joseph D. would have chimed in. I have a lot of respect for his knowledge and experience.


Wayne

 

[BTilson317]

turbo opinion..

ok reddog heres what info ive got in local area in indy. . i know of 2 of us 12 valve cranked up guys. . me, and a 5 speed. . with stock turbo and they run like a scoldeddog haha then theres my friend w/ a 24 valve and hes upgrading his 64/14 to a different housing and possible getting another, that is on a 470hp / 968 ft lb truck. soooo ive asked my go to guy that has a good 1000hp 12 valve so he's tried em all!!! hah and he states says for mine he would recommend the 62/12 phatshaft for excellent streetability and to spank a mustang or 2 lol. then theres the high tech turbo and thats a62/12 and there more money but both the basic same. . ive seen boooth with replaceable housings and spools annd exaughst outlets. . you can differ your turbo as you go. . GROW with you TURBO they say. . lets keep searchin and find some more basics out, im right with ya on the money to get one but would it hurt me. . probly not it smokes up to 70 mph!? what the hellll, but its cool.