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Discussing Twin Turbo 2.3? in the SVO Forum. As some may know, I planned to drop a 350 in a junk Mustang 2.3L ...

       

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Old November 29th, 2007, 08:18 PM   #1
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Twin Turbo 2.3?


As some may know, I planned to drop a 350 in a junk Mustang 2.3L (N?A model). But it almost seems more economical to drop in the 2.3T motor from a donor car and not have eff around with so much stuff (just fuel pump and computer) but I still plan to switch over to the World Class T5 and 9" rear.
I'm not very turbo-savvy, so I was wondering what is involved in running a twin turbo system or if I would be better off just leaving it at a single turbo and tuning up a different part of the motor (or buying a new turbo but keeping it single)?
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Old November 29th, 2007, 09:05 PM   #2
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it would be more efficient to use one large turbo over 2 small ones

but why do you need a 9" rear? that seems like a waste to me.. unless you plan on making a LOT of power
 
Old November 30th, 2007, 11:01 AM   #3
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The car is going to get stripped and turned into a dragster. I'm shooting for about 300hp off the bat but then moving up to about 600hp over a couple years. I just figured it would be easier to install the entire drivetrain while I have the car ripped apart rather than using the original rear and the evantually have to replace it and knock the car out of commission for a while.
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Old November 30th, 2007, 11:42 AM   #4
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you def wont need a 9" rear. youll need an 8.8" at the absolute most if your gonna do 600hp
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Old November 30th, 2007, 03:31 PM   #5
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i know a guy who has a twin turbo 2.3 making 700hp
 
Old November 30th, 2007, 03:54 PM   #6
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Originally Posted by Avaric3 View Post
you def wont need a 9" rear. youll need an 8.8" at the absolute most if your gonna do 600hp
Thanks, that is probably going to save me a good chunk of cash because I can just pull one of those off a Thunderbird.
Also, should I just keep the stock turbo until after I have beefed up the rest of the motor or should that be soon on my list to replace?
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Old November 30th, 2007, 09:22 PM   #7
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i wud keep the turbo stock for now..

you can see significant power gains by increasing air flow.. such as port and polish and a good (tuned?) exhaust
 
Old December 5th, 2007, 02:56 PM   #8
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if big power is what you're after, a big single turbo is what you want. The "problem" with big singles is that they can take a while to spool-up, which sucks ass in street driving. But that's not a problem for you if you're making a drag car.

Twin turbos also aren't generally used on 4 cylnder engines, as you don't really have the enought exhuast flow from 2 cylinders to make a turbo worth it. The reason you go to a twin is to generate your boost at lower rpm, as it's easier/quicker to spool up two small turbos.

If you were going to do some form of dual turbo setup, what you'd most likely want to do is a sequential turbo, much like the 3rd gen RX-7 or Ferrari F40, where there's a small turbo to help low end, and a big-ass turbo for the big power. I still don't think that you'd want that setup in a drag car though, as it's just extra heat and complexity.
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Old December 5th, 2007, 09:05 PM   #9
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twin turbos on a 4cyl isn't really logical..There isn't much beneift and the hotside would be a hassle.
 
Old December 5th, 2007, 09:06 PM   #10
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yea that guy with the TT DOHC 2.3 doesnt like how it runs with it
 
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