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Malicious
Dodge Dakota
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1/26/2003
15:40:01
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 Subject: RE: 5.9 Twin Turbo RT
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My question is in a twin turbo setup. Do you go with two smaller turbos for quicker spool or bigger turbos. Where is the line when one setup takes preference over the other?
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Buzz
Dodge Dakota
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1/27/2003
11:18:51
|  RE: 5.9 Twin Turbo RT
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the size of the turbo depends on the engine displacement, the RPM range it will be running in and what you want it to do... generally a twin setup will use smaller turbos, but this is not always the case... it all depends on the application... very vague I know but with out some more info it is really hard to explain...
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Malicious
Dodge Dakota
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1/29/2003
18:07:23
| RE: 5.9 Twin Turbo RT
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More info 5.9 with a computer mod. 4x4 dana front and rear. I would like to have the mid to top end power a little more expressive. I have run f150's f250's silverados yukons usually trucks within my class and beat them all. the only one so far that has beat me was an extreme which is alot litter and supercharged if I am not mistaken. Oh by the way. I have a dodge ram 1500 SLT 4x4 fully loaded. I know I am on the dakota page but the engine principals are the same. Eventually going to raise it and do more off road, but would like the power assistance of turbo. I own a laser (turbo) omni GLH (turbo) and a lebaron (which I plan on turbo) Is there any company out there to help get things started? Also, do you need another map sensor and fuel pump, bigger injectors? Alot of people were amazed at the power and speed beating these guys while they were 2 wheel drive and I am 4x4. please help..
The new Hemi rocks...
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Buzz
Dodge Dakota
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1/29/2003
19:25:08
| RE: 5.9 Twin Turbo RT
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First the extreme is not supercharged, it is just a V6 with some fiberglass and 16" wheels... Speed tweaks is working on a 5.9 twin turbo setup right now... there are a few people who have made their own kits... post a new thread on the subject on a few sites and you will find better answers.
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IntenseDak39
*GenIII*
1/30/2003
08:40:23
| RE: 5.9 Twin Turbo RT
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"and a lebaron (which I plan on turbo) Is there any company out there to help get things started?"
if you are referring to the lebaron/omni, then there is a great company out there. They help we squeeze 275 hp out of my Shelby with a T1 (non intercooled) with a stock bottom end running 11 lbs of boost.
www.forwardmotioninc.com
Turbocharged V6
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azdak
Dodge Dakota
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1/30/2003
21:30:29
|  RE: 5.9 Twin Turbo RT
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exhaust pressure is not a concern the pressure is the same everywhere in the exhaust system flow is a concern in a naturally asperated engine the turbo makes back pressure anyway but since it is applying pressure it scavenges the cyliders flow from the turbo is important to get rid of used energy ive been looking for a timing control for my 4.7 i have a t3-t4 hybrid with built in waste gate (ebay)320.00 handbuilt composite turbo cover from wrecked porsche boxster heat shield (freebay) handbuilt exhaust manifold (freebay),built from materials found in the back yard scaled from the pics in Duner's site since i cant meet up with him hes always working and i live in the same city!!! LOL handbuilt aluminum water to air intercooler, (freebay) built it at work ac condensor coil for intercooler radiator, (freebay) 12 volt 220 gal hr water pump for intercooler (grainger)22.00 turbo boost sensing switch for water pump comes on under pressure (napa)12.00 "found idea on line"(freebay). 12:1 fuel management unit (ebay)70.00 100psi 880 liter hr. fuel pump (ebay)72.00 30# fomoco fuel injectors and a lot of free dino run when complete cost 1 saturday at a friends house doing some wiring in his garage he owns a shop that specializes in supercharging stangs i know but the motor configuration is the same new anodized aluminum blow off valve (ebay)60.00 vdo boost guage (ebay) 32.00 handbuilt guage pod in overhead console (freebay)materials accuired from drag boat high speed blow over incident repair. 30.00- 40.00 hush money to kids to keep quiet about said project 50.00 to wife when she found out about said project ie. shoes sweater why cant i spend money-money so you see it isnt that hard or expensive to do this type of project i think the going rate for horsepower is 30.00 per pony i have much less than that per pony and you get to say i built it myself like our dads did before magazine building came along and you had to use your imagination the fastest street rods ive ever seen came from people who used the resource around them and there friend it isnt impossible and at 25,000$ less than a lightening who can argue except the guy in the ford who wished he had done the same
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whoa
Dodge Dakota
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1/31/2003
09:22:51
| RE: 5.9 Twin Turbo RT
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that's the longest run-on sentance i've ever seen...is your period button busted boomhauser?
Just ribbin on ya!
Fleeter
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Ryan
Dodge Dakota
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7/17/2003
22:35:24
|  RE: 5.9 Twin Turbo RT
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I know this is for Dakota fans, however, I'm buiding up my Jeep Scrambler and plan on using a 5.9. So, this turbo talk has me interested. Send me some links of some sites to get me started if anyone could. I tried speedtweaks.net but it didn't work for me. Any other suggestions would be very helpful. Thanks.
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blowndakrt
Dodge Dakota
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7/18/2003
16:19:55
| RE: 5.9 Twin Turbo RT
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krcperformance.com built a TT 5.9, could go 408 as well... speedtweaks.ca canada site, still good info though. gsmotorsports.com thefastman.com
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DakToBasics
Dodge Dakota
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7/18/2003
16:46:31
| RE: 5.9 Twin Turbo RT
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Message:
You mentioned building it for off road use! If you have your heart set on turbo's, use small ones and don't lower your compression ratio. When off road, you need low end grunt which turbo's will not give, you will have to rely on off boost performance 95% of the time. If you play in the mud and water you may also have a problem with the high temperatures associated with a turbo, they don't like to be cooled off quickly, it tends to warp housings.
I think supercharging would be the best bet. Half the money, twice the torque, and enough streetable power to make you and your passenger rectally remove the upholstry from your seats!
Nice cars by the way... I have built a Conquest TSi and a Ford Thunderbird Super Coupe, I am currently working on an 84 Colt Turbo and my wife has a Volvo 850 Turbo which I can't wait to start tinkering with.
There is no repalacement for displacement, but makeing 100HP per liter, daily, on pump gas calls for forced induction!
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TurboBlew
Dodge Dakota
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7/18/2003
17:27:50
| RE: 5.9 Twin Turbo RT
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Message:
Ah got to disagree with ya there. Sure just bolting on any old turbo will not affect the lower rpm performance...but you can use someone like Innovative or Majestic to rebuild a turbo to your specs. There are literally thousands of compressor maps where full boost can be achieved before 1,500 rpm. Its about the turbo setup.
A supercharger has parasitic loss. A turbo is more efficient.
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TurboGuy
Dodge Dakota
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7/18/2003
17:28:17
| RE: 5.9 Twin Turbo RT
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Ah got to disagree with ya there. Sure just bolting on any old turbo will not affect the lower rpm performance...but you can use someone like Innovative or Majestic to rebuild a turbo to your specs. There are literally thousands of compressor maps where full boost can be achieved before 1,500 rpm. Its about the turbo setup.
A supercharger has parasitic loss. A turbo is more efficient.
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DakToBasics
Dodge Dakota
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7/18/2003
18:10:49
| RE: 5.9 Twin Turbo RT
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You are absolutely correct about custom builds and efficiency, but where do you draw the line?
For the cost of building such a turbo system, he could have a NA Engine built that would break every piece of drive train behind the flywheel!
I am a firm believer in forced induction but have also dabbled in rock crawling, the two just don't mix when you throw in daily use and driveability.
Keep the banter going, if Malicious is still tracking the posts, he can draw his own conclusion from an educated exchange. Better yet, Malicious... do an importance breakdown for me, i.e 70% driveability, 10% stoplight to stoplight, 20% Rock crawling. This will be the first question a good engineer will ask you before plans are drawn anyway.
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