Engine/Transmission (1994 - 1998) Twin turbo set-up?

[DieselPuff]

Did you guys clock these turbos yourselves? Also, did you clock the turbo before or after creating the piping? Thanks.

 

[DBR]

BPine,



The turbos sound no different than stock, even with my cheap imitation of the BHAF.



Diesel Puff,



For my install, I needed to re-clock the turbos and modify the waste-gate actuators.



I would start by fabricating the entire exhaust side of the turbos from manifold to muffler, then I would work on the cold side piping. I used a 2 1/2 inch schedule 40 standard radius 90 to fabricate my exhaust manifold to attach the secondary turbo (I purchased this from a local supplier for less than $4). I have found on the internet through turbo suppliers blank exhaust flanges for a mere $25. You can use 1" plate and have it plasma-arched for as much or less. It depends on how well you know the guy with the plasma-arc!



For the V-clamp end, I believe I used a 3" pipe plug as a blank and machined a V-clamp from that.



Once I had all the parts gathered, I welded them out with a simple wire feed at my home shop.



For the turbo oil return lines, I used 7/8 "exchanger tubing" and 7/8 wet exhaust hose. I used 3/8 flat stock for the flanges.



If you want to talk in person about this, let me know. We can exchange phone numbers and shoot the breeze, no reason to make the same mistakes that I did!



Don't be misled, these turbos will not provide the high end power that HVAC and others with twin turbos have achieved. This set-up will give you a solid foundation for low-end grunt/egts for towing.

 

[BPINE]

Thanks for the info D. As for you HVAC we sure have a lot of fun don't we!!!!

 

[TxDieselKid]

So how much is that twin turbo in the window......

HVAC,



I know that you have been playing with twins for a while, are you planing on releasing a kit of some type?



Andrew

 

[HoleshotHolset]

back to the top... .



I love twin turbo threads...



Matt

 

[TxDieselKid]

Check out the Black Mountain Diesel "Special Projects" page for the "Whistle of Death" twin set up. It's the same system that is used on Eric McBrides (Stack-n-Jacked) truck. The thing to remember is his is a 12v, and from what I hear, a 24v system is being worked on by Tom(Briar Hopper) and a very respecitable 24v owner. I don't want to drop names because it's not my place.



The reason that there will be 2 systems, is one needs to rememebr that 24v's do not spool turbos like 12v's do.



Andrew

 

[HVAC]

Dos Turbos

I'm glad this topic is back on the board since I have a great interest in this subject. Our latest twin turbo effort includes the use of the awesome B1 turbo. More testing is necessary, but preliminary results are excellent.



The next project is to incorporate a larger and more efficient bottom turbo.



TexKid, we ARE selling twin turbo kits, and coincidently the one I'm working on now is going to San Antonio Texas. Just up the street from you

 

[HoleshotHolset]

I'm glad we could keep this thread alive... a lot can be learned from those who have posted so far... .



Thanks `Drew, I'll check out that site A. S. A. P.



Matt

 

[HoleshotHolset]

HVAC: would you consider selling individual parts of the twin turbo kit? My handywork is VERY lackluster... . granted it works..... but it ain't pretty.



I'd be looking primarily for the manifold that goes between Dos Turbos... . that is the biggest PITA... .



Matt

 

[TxDieselKid]

Matt, i have already talked to Tom and the project is on hold untill mid-Augest he said, when he gets more plans down. He will also get a price then, after he gets a price from his pipe distrubitor.



Andrew



P. S. What do you need a twin set up for, you got NOS.

 

[Briar Hopper]

Putting in my two cents... the system I'm working on is "loosely" based on Eric's system, and I do mean loosely. Not an exact copy, not even the same turbos or same size piping. It has been shelved temporarily, in the interests of launching my shop, one person can only fit so many things into the available hours of a day.

The 12 valve engines are high-revving, that one thing alone contributes more to it's versatility as a performance engine, than anything else(unless it's got a Piers or J. D. Power pump on there ), and seems to generate more forgiveness in turbo map efficiency. What works on Eric's engine will work on mine, but not as well. For that reason, I've made changes, but again, I'm lacking in time to see the project to completion.

Nowel's extensive research and development on twin systems for the 24 valves is not to be taken lightly, I urge all of you to support his business in any way you can, we will all benefit from it.

If he's selling it, you have an instant guarantee it's as good as they come.

 

[TxDieselKid]

Originally posted by Briar Hopper

I've made changes, but again, I'm lacking in time to see the project to completion.

Tom,

Want a test dummy?!?!?!



Andrew

 

[dcash]

man this is a good thread. .

to much to soak in!



du$ty

 

[StakeMan]

How about an update DBR.

 

[TxDieselKid]

Matt, the chances of Nowel selling you just the piping are slim I bet. He has worked hard on his system, and deserves to be rewarded for it.



But here is what I would do in you case Matty... .

I would start by fabricating the entire exhaust side of the turbos from manifold to muffler, then I would work on the cold side piping. I used a 2 1/2 inch schedule 40 standard radius 90 to fabricate my exhaust manifold to attach the secondary turbo (I purchased this from a local supplier for less than $4). I have found on the internet through turbo suppliers blank exhaust flanges for a mere $25. You can use 1" plate and have it plasma-arched for as much or less. It depends on how well you know the guy with the plasma-arc!



For the V-clamp end, I believe I used a 3" pipe plug as a blank and machined a V-clamp from that.



Once I had all the parts gathered, I welded them out with a simple wire feed at my home shop.



For the turbo oil return lines, I used 7/8 "exchanger tubing" and 7/8 wet exhaust hose. I used 3/8 flat stock for the flanges.

I know a good machinest if you need some help.



Andrew

 

[HoleshotHolset]

Well, I've bought two turbos and I don't intend on buying two more... so there's no way I'm about to buy a whole kit.



I do understand the time/effort involved in making a setup like this... . it ain't easy!



I have been using standard 3" mandrel-bent exhaust tubing for the manifold..... this schedule 40 stuff sounds a lot better to me.



Back to the crappy AC stick welder I go.....

If you guys could hear me as I weld..... you would laugh your butts off..... it sounds like this: "CRAP! $@&* rod stuck again!..... ^&#%! blew through the pipe again..... "



Matt - My welds look like bird droppings..... when in doubt use 250 AMPS!

 

[Amianthus]

Hey, an angle grinder can make anyone's welding look good.



(Don't ask me how I know that)

 

[RottnDogue]

Originally posted by TxDieselKid





Tom,

Want a test dummy?!?!?!



Andrew

Not Tom, but I'll give it a whirl..... Ok Andrew what's 2+2?

:-laf :-laf

 

[TxDieselKid]

I try to change, and I just get sucked right back in........

Originally posted by RottnDogue

Not Tom, but I'll give it a whirl..... Ok Andrew what's 2+2?

:-laf :-laf

Funny guy!!! I am trying to NOT post so much cr@p, and look what you guys are doing to me.



Andrew

 

[Jim Fulmer]

Matt, if you send some pictures of the setup to me, I'll send pictures of my Square Wave tig to you and we both can drool



Jim