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

[DBR]

The current set-up is a 14cm HX 35 and 18cm Hx40. Things don't look all that clean at this point, I will be dropping the set-up in this evening to check for final fit-up and to start layout of the oil return system. I hope to have this running in the next couple of weeks, depending on my work schedule. I would like to make it to Dyno days, but with the long waits at the border (4 hours for a co-worker to get back in on Sunday) I'm not sure if I'll take the chance and cross the border. The latest I have heard is that the border is requesting two forms of ID: Drivers Licenses, Passport, and/or birth certificate (second-hand information). We'll just have to wait and see.

 

[Smoker]

oil return line

Are you going to drill a hole in the side of your oil pan for the return or have you got some other plan for the return?

 

[HVAC]

Twins

DBR, the potential tight spots I forsee are the location of the turbine connector to the ex. manifold, and the distance from the compressor connector pipe to the hood. Your going to compete with the distance from the right side frame channel and the block for the lower turbo. It appears to me that you will need to tap the pan for the drain back on the lower turbo. Later engines have a freeze plug that can be removed for this purpose.

 

[MY6EATSV8'S]

Hey Mr Nowel, I heard throught the grapvine you got a real turbo for the red rocket. You gonna have it installed by the weekend?

 

[BPINE]

Hey Adam wouldn't it be better to have real turbo's instead of a real turbo... ... .

 

[MY6EATSV8'S]

you said that right pine

some day we will have twins

 

[DBR]

installation pic's

 

[DBR]

Another fit up pic

 

[DBR]

Though hard to tell from this pic, the turbo oil return is above the oil return port on the block.

 

[DBR]

The 4" exhaust will be a little tight, but nothing a torch and hammer won't fix.

 

[DBR]

One last view. Looking more like a possibility, it just might work. The only issue is the close clearance to the alternator, once again nothing that a torch and hammer can't fix. Seriously if this works out, I'll refit to gain more clearance. I plan on making some ceramic fiber blankets to insulate the exhaust housing from the pressure side piping.

 

[HoleshotHolset]

FINALLY!!!!

Somebody posts the A/R ratios of the turbos being used!!!!

This is what I have been waiting for!!!

Now... time to do some figuring out of things... tee hee.



Here's a thought: Has anyone thought about all the extra weight hangin' off the exhaust manifold?? Some turbo gassers put little braces to hold the turbo to the engine block as to avoid putting too much stress on the exhaust manifold..... just my $. 02 worth.



Matt - good things come in twin-form... ...

 

[Bob Wagner]

Bravo DBR Bravo

very clean looking installation



very nice job

 

[Cooker]

Nice install! Very clean and neat looking , and no moving the battery. If I were you I'd be itching to have that thing on the road to see how performance is gonna be.

 

[DBR]

I'm hoping to use the factory air box as well, but I'm not completely confident if I will be able to do so. I'm going to do a little more fabrication for the exhaust than I originally thought. I have also looked at removing a 3" section from the top horizontal run of the cold air ducting, creating a flex joint with hose and clamps. This will allow easier indexing if needed and for heat expansion if there is any. I'm in no hurry, I still have the transmission on the shop floor awaiting my clutch arrival.



I don't expect a major increase in overall horse power, but I am looking for a lot of low end boost to get rid of as much smoke as possible.

 

[Garry Verheyden]

DBR

I hope you do a dyno reading before and after you install your system. I previously asked if anyone has done a before and after dyno reading on a twin turbo system (without changing fueling), but didn't get any answer. I am planning on installing a twin turbo set up on my truck in 3-6 months depending of course on my cash flow. I currently have somewhere over 400 H. P. (hopefully BD's dyno will be working in 3 weeks from now so I can finally get an accurate reading). We are all trying to lower our E. G. T's and obviously can achieve this with twins. I did the less expensive solutions so far (slightly less) such as ATS manifold,Piers' HX 35, 16cm housing,ported head,5" exhaust, and this definately made a difference on E. G. Ts. The twins will lower E. G. Ts even more . But how much horsepower??? More boost means less black smoke,less smoke means more burned fuel,more burned fuel means more HORSPOWER!!... ...

How much??? Has anyone done a comparison on this? I know there is a limited amount of people with twins still but maybe someone has done this comparison. I talked to someone at Enterprise Engine and they estimated 70-100 H. P. increase. WOW!!! are these figures realistic ?? Don't know.

Garry

 

[HoleshotHolset]

70-100hp increase with no other fueling mods whatsoever?

At what boost levels is this attained?



So, if I send Enterprise Engine $4k and wait a few days and put their stuff on my truck I can have 70-100 more hp without doing anything else to my injection pump, injectors, delivery valves, etc.



I like this idea... . I hope it's true.



Matt

 

[BushWakr - RIP]

GARY, you still with LL ?? We should have a coffee some time.



Regards, Bob

 

[sewman]

Matt,

Remember with Diesels FUEL + AIR the more of both you can cram in your engine the more power you get.

Bob

 

[Air Bulldog]

I have been toying with the idea of running two hy-35 in parallel. Has any one tryed this,could it work?