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Join Date: Feb 2003
Location: Newbury NH
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Power question

Is it possiable to rebuild a 944na motor to produce around 200hp? I just love my car and have now got some money and would love to rework the entire motor. I am not interested in a turbo supercharger or nitrious. I want to try to make 200 horses with all motor. Do you think it can be done? if so how? And about how much will it cost?

Has it ever been done?

Man it is fun to dream!!!!
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Old 02-02-2005, 12:39 PM
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Sure, all it takes is time and money...

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Old 02-02-2005, 12:45 PM
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Sure, buy a 3.0L.
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Old 02-02-2005, 02:21 PM
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Yea it can be done, Like Zero said just about the only way to boost into big HP with a NA is displacment. So If you can bore and stroke the NA motor then go for it. You can go anywhere from a 2.5-2.8, I think a 2.5-3.0 needs a different block. If I where you try a 2.7L, all you goota do is bore and recoat the cyclinders then find some Porsche pistons, they go for about $1700 new. Then get a JM cam, Get some head/valve work done. Raise the CR ratio to about 11-1, Lighten the bottom end up, Switch to a MAP or MAF system, throw in a Custom chip or a Standalone system. then you might be some where near the 200hp mark
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Old 02-02-2005, 02:50 PM
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fast 924 How much would that all cost in total? I am sure i could do some of the work myself!! But only minor stuff i am no great grease monkey
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Old 02-02-2005, 05:43 PM
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If you have to ask.

Too much.
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Old 02-02-2005, 06:09 PM
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That sure seems like alot for an 8% boost in displacement. How much would that .2 litres return over the same mods to a 2.5? Didn't '89's come stock with that advantage?

Is $1000 reasonable for head work, cam, and chip? What would that give, 35hp? (Assembly work a DIY project.)
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Old 02-02-2005, 06:40 PM
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There is a saying- "no replacement for displacement" only it ignores the effects of forced induction. Regardless, you're looking at spending some fairly large $$ to get to the 200hp mark. You can touch it briefly with nitrous. Probably the easiest way would be to scarf the engine from an S2 or a 968 at a starting point and build from there.
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Old 02-02-2005, 07:13 PM
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