4.7l twin turbo

[rodney18]

i have a 2000 dakota 4.7l 5-speed 4x4 and i'm thinking about puting twin turbos on any info on this is there a kit or do i have to make my own where do i buy the stuff and will my engine hold up to this power any other mods i will have to do

[YAAAABUDDY03]

i have a 2000 dakota 4.7l 5-speed 4x4 and i'm thinking about puting twin turbos on any info on this is there a kit or do i have to make my own where do i buy the stuff and will my engine hold up to this power any other mods i will have to do

The ideal setup of a twin turbo is to have two different sized turbos.... one smaller one to spool up as soon as it can, and then a larger one to spool up right about at the end of when the smaller one stops increasing it's boost level.

If you don't tear the motor down, and do some heavy forged internals, you're going to blow your motor pretty quickly. Especially with a twin setup.

Lets put it this way,.... it's going to cost you a boat load,... and if you don't have AT LEAST 10 grand in the bank right now... don't even try.

There aren't any kits for a turbo 4.7L.... sorry!

if you want my true opinion... I say get your motor ready to recieve high amounts of boost,... and twin turbo it,... but have them done through a remote setup, and make the smaller turbo... one size smaller than you would normally use.... this will make it have an even faster spooled up turbo,... and then it'll make the other one kick in just a hair quicker,... and it will be one big huge circle of fun.

Paul

[themongrel]

I agree, that is what I did. You could build you own remote setup for around 2K or buy a "universal" (LS-1) kit from STS for about 4K... Your motor would last a lot longer.

[themongrel]

I ran across this while surfing cardomain

Twin turbo for small block Dakota ( http://www.cardomain.com/memberpage/374500/4)

[themongrel]

Or this single setup for the 5.9

5.9 Turbocharger kit (http://www.turbotechnologyinc.com/dodge_turbocharger_system.htm)

[wykdrt]

I ran across this while surfing cardomain

Twin turbo for small block Dakota ( http://www.cardomain.com/memberpage/374500/4)


Thats KRC performance's (www.krcperformance.com) Twin Turbo R/T. Its got a 408 setup, custom cam, custom heads, custom tune and the twin turbo's. It just dyno'd 641 hp and 609 ftlbs @ 21 psi. the truck ran 11.70 @19-22 psi and letting off b/c of a lean condition. But then they downed the boost to 9 psi and ran 12.30

Pretty good setup but the power is way to high for me in the RPM range. I don't want to have to spin that magnum up to 6500 rpms just to see power. Turbo's are good if you can get it to spool quick and make some power down low. But good luck doing that.

[realdeal7369]

The ideal setup of a twin turbo is to have two different sized turbos.... one smaller one to spool up as soon as it can, and then a larger one to spool up right about at the end of when the smaller one stops increasing it's boost level.

If you don't tear the motor down, and do some heavy forged internals, you're going to blow your motor pretty quickly. Especially with a twin setup.

Lets put it this way,.... it's going to cost you a boat load,... and if you don't have AT LEAST 10 grand in the bank right now... don't even try.

There aren't any kits for a turbo 4.7L.... sorry!

if you want my true opinion... I say get your motor ready to recieve high amounts of boost,... and twin turbo it,... but have them done through a remote setup, and make the smaller turbo... one size smaller than you would normally use.... this will make it have an even faster spooled up turbo,... and then it'll make the other one kick in just a hair quicker,... and it will be one big huge circle of fun.

Paul

they do make a supercharger kit for the 4.7, just not a dual one. IMO, i think a dual one is a waste for the street. have to spool it up so high to get to the max power band hafl the time.

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=1443&prmenbr=361

paxton has one. its pricey, but aint everything pricey that makes your truck go like hell? besides a 45-60% increase in power is alwasy a beautiful thing.

[Tom Slick]

The ideal setup of a twin turbo is to have two different sized turbos.... one smaller one to spool up as soon as it can, and then a larger one to spool up right about at the end of when the smaller one stops increasing it's boost level.

Paul

Wrong.

There are 2 ways to properly turbo a 4.7L, each can be ideal if setup properly.

A single turbo setup - a good ball-bearing turbo matched up for the 4.7L would do well...

A symmetrical twin-turbo setup - one turbo per cylinder bank... again, matched up for the engine... just have to make sure the wastegates are synced (both must open at the same time)

A sequencial twin-turbo is not really necessary, and is also harder to properly tune.... Those really powerful turbo Supra owners change out the sequencial setup for a single turbo setup...

IF anyone has any questions regarding turbocharger systems, feel free to give me a shout... my old partner and I twin-turboed a Dakota R/T before KRC even thought about doing it...

Later!
Tom "Slick"

[jmm756]

i have a 4.7 set up with a t70 turbo on a t3 t4 hybrid hot side, p trim shaft. running 8 psi, hitting 8 in first gear with 3.92 rear http://memimage.cardomain.net/member_images/6/web/834000-834999/834664_6_full.jpg

i'm listing under gen 3 dakotas, with 4.7 turbo
my page is here http://www.cardomain.com/ride/834664/1

[Bad_banana]

I have been doing some extensive viewing of turbo's for the 4.7 . I really like the idea of the rear turbo. Is it possible to run a single turbo with the GSM true duals? THe concept of two pipes/2 mufflers is confusing me, or does this open the door for a twin turbo, 1 turbo per pipe/muffler. I have gathered that most posts state to stay close to around 6 lbs of boost on stock internals. Given it would be possible to run 2 smaller turbo's say 3 lbs per turbo to achieve 6 lbs. Is it possible to run 1 turbo with the true duals? If so, how do and where do I place the turbo. :help:

[YAAAABUDDY03]

The question should be.... do you already have the true duals installed...

If you do... you'd just have to get a simple y-pipe so that it's into a single 3" pipe...then going to your single turbo to make power.

If you don't have it installed.... I'd say sell it for as much as you can get for it,.. and get a single 3" exhaust made... much easier/cheaper than having to deal with duals. It's not like you don't have enough room under the truck to fit it... it's just more of a PITA to deal with the extra piping.

Twin turbo would work, but I wouldn't mess with it until you have forged internals...

You should be able to run between 6 and 9lbs of boost on a stock motor with stock internals.... just make sure you've got the correct tools to tune this monster.

Paul

[Bad_banana]

I have the exhaust on order aswell as a few other goodies. I don't plan on doing the turbo tomorrow or next week, but in 6 months to a year as I plan to make sure everything else is built up and ready for a decent amount of boost. Possibly a 4.7 long block from KRC that is built with the heads/internals/cams and can stand a nice amount of lbs. But until then I think i'll just stay with the exhaust and tweak from there. :mullet:

[rgathright]

Here this should help on the turbos, the page is based on Duner's experiences, please post pics of your install for other forum users to enjoy!
http://www.reubengathright.com/RTnotTurboPage.htm
http://www.reubengathright.com/RTnotTurboPage_files/DunerTurbo2.jpg http://www.reubengathright.com/RTnotTurboPage_files/TurboParts2.jpg
God, I'm annoying, but at least people get help. All the current information on turbo dakotas came from Duner and IdahoRT. :clap2:

Also, please study the Ferrari F40. The engine is similar in displacement (IE Cams) and uses twin turbos. A link is available on the page as well.

However, Rodney do you plan to offroad with this setup? Getting water on those hot manifolds is a great way to crack them.

[YAAAABUDDY03]

I have the exhaust on order aswell as a few other goodies. I don't plan on doing the turbo tomorrow or next week, but in 6 months to a year as I plan to make sure everything else is built up and ready for a decent amount of boost. Possibly a 4.7 long block from KRC that is built with the heads/internals/cams and can stand a nice amount of lbs. But until then I think i'll just stay with the exhaust and tweak from there. :mullet:

Sounds good to me,... keep us posted. You being in Dallas... I would love to come up and help you whenever you start doing the project. I don't have all knowledge of turbo systems... but I understand how they work... two brains is better than one in any circumstance. Let me know man, I'll be glad to help out.

Paul

[Bad_banana]

No doubt, i haven't been around the boards in a year or so, but i used to go to all the dfw meets etc. Are there still the monthly meetings? I'd like to make it out to one.