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18:35:52 - 04/25/2024
Dakota Performance
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XracerX2169
Dodge Dakota
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9/12/2003
20:23:56
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 Subject: turboing my 4.7
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I haver a 2000 dodge dakota and i want to ehtier turbo it or supercharge it. But i was wondering what i need to get to do it and how much is all this stuff gonna cost. the intercooler i an getting for free from a dodge ram desil( i got a guy that is gonna cut it down for me), the turbo i dont know(help me out here) and all the piping i can get custom bent by my father. What else do i need. Also how much is all this stuff gonna cost and what type of turbo do i need. ALso what do i need to do to my truck to get it ready to be turboed. Then what is the TPS senor and how do i adjust it or whatever, i see your trucks perforance stuff and u have them adjusted to .76 or whatever. thanks for the help
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WILLIAM N.
Dodge Dakota
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2/23/2004
22:32:50
|  RE: turboing my 4.7
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I REALLY DON'T THINK YOU'LL BE HAPPY WITH THE FINAL RESULTS. THERE ARE SOME REAL NICE BELT DRIVEN TURBOS/SUPER CHARGERS THAT NO LONGER HAVE THE DRAWBACKS OF TURBOS. I HAD ONE OF THE VERY FIRST TURBOS TO COME OUT PROFFESIONALLY INSTALLED ON MY NEAR NEW 72 4X4. IT WORKED REAL WELL.
THE NEW SUPER CHARGERS HAVE EVERYTHING NEEDED AND CAN BE FOUND ON THE WEB. YOU WILL HAVE TO DECIDE IF YOU WANT A CENTRIFICAL OR DUEL ROTAR TOP MOUNTED
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.boB
Dodge Dakota
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2/24/2004
09:34:31
| RE: turboing my 4.7
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Turbos and blowers both have their advantages - and disadvantages. For a street vehicle, I prefer a turbo.
With a turbo you get boost on demand, regardless of rpm. And you don't have boost when you don't need it. I have a turbo on my Harley. The waste gate is set at 10psi. If I open the throttle at 2500 rpm's, I'll get 10 pounds of boost. If I'm cruisng down the street at 50 mph with part throttle, there's no boost to speak of. It's very efficient. But a turbo is a fairly complicated system for a V8. It requires some complicated tubing bending to get it all working correctly. Some of the best systems have two turbos to eliminate lag. All that can get expensive. I've never seen a turbo kit for a Dodge truck. You'll have to make it yourself.
Blowers are much simpler to install, and therefore much cheaper. You don't have to change the exhaust system at all to install the blower. Although it does help with power production. The downside is that boost is rpm dependant. You'll get X amount of boost for Y rpm's; regardless of what your needs are. To get boost/power, you need revs. Revs are harder on an engine than boost. So there's a fair amount of comprimise with a belt driven blower.
Compressed air gets hot. Regardless of which method you use, an intercooler always helps. Be carefull of using an intercooler designed for a diesel. The is a 5.9l engine that runs at less than 3,000 rpm's. Do the math and see how many CFM that is. Then do the math and see what your 4.7 needs at 6,000 rpm's.
As for engine prep, it depends on how radical you plan on going. If you want to run 16 psi, you'll need to redo the entire bottom end, O-ring the heads, use head studs, etc. If you keep the boost down around 6-8 psi, the stock engine will be fine. The stock computer won't handle forced induction. You will also need to upgrade your fuel delivery system - more power requires more fuel.
And don't forget about beefing up the trans, drive shaft, and rear end as needed.
IMO, a belt driven blower will be much simpler and cheaper. But a turbo will be more efficient and fun to drive.
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hybrid
Dodge Dakota
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2/24/2004
23:05:09
| RE: turboing my 4.7
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Message:
I would choose a turbo over a s/c anyday. It's easily adjustable and easy to tailor to your needs. need more power, crank up the boost, need less turn it down (as low as the wg allows).
Like stated above, a s/c will be cheaper and a lot easier to install, but in the end a turbo will give you more power. Iwould opt for the s/c just because you can buy a kit and not have to worry about fabricating stuff to fit.
If you do with a turbo,for fuel delivery you can get the same parts that come with s/c kits. Example being, vehicles with a return fuel line use a boost dependent fuel pressure regulator to get more fuel as the boost rises, not the best way to go about it but it works.
The manifold would probably be the hardest part to fabricate, it would take a lot of R&D. Piping is simple, a couple -U- bends and a welder and your set.You would need to find a reliable oil source to feed the turbo, along with a way to get it back to the oil pan. I know when i ordered a turbo for my car i contacted the guys at www.cheapturbo.com they helped me a out a lot. Although it was for an import they were able to get me the rite turbo for my hp goals. Try searching online, you should find a lot of sites related to choosing the rite turbo (compressor A/R, trim, exahaust housing size,etc) for your engine. beyond that, it should be pretty simple.
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