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lower compression pistons

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Old Sep 22, 2001 | 08:37 AM
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Default lower compression pistons

Does anyone know if anyone is coming out with lower compression pistons for the s2000? Also, is there any other way to lower the compression of the s2000? Thanks
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Old Sep 22, 2001 | 08:52 AM
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thicker head gaskets.
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Old Sep 22, 2001 | 09:00 AM
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Watch for developments any week now. Some people on this board will be offering low compression pistons soon.
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Old Sep 22, 2001 | 09:59 PM
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May I ask why? Sorry - not too mechanically inclined.
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Old Sep 22, 2001 | 10:39 PM
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[QUOTE]Originally posted by S2Krazy
[B]May I ask why?
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Old Sep 23, 2001 | 08:02 AM
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if you were to lower the compression of the s2000 without adding a turbo or supercharger, you will produce less horsepower, right?
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Old Sep 23, 2001 | 03:28 PM
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Originally posted by Eze8199
if you were to lower the compression of the s2000 without adding a turbo or supercharger, you will produce less horsepower, right?
Yes you would lose some horsepower depending on how low you drop it. But you will gain some torque.

Justin
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Old Sep 23, 2001 | 03:56 PM
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Can't you change the compression by changing the crank?
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Old Sep 23, 2001 | 07:28 PM
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Originally posted by turboelan


Probably looking at Turbo mod.

Back home.. when low compression pistons are not available for a target car, either two methods are used which sometimes causes problems if not done exactly right.

Either use two (up to three) head gaskets and/or smoothly grind out the piston and/or head.
Grinding out the piston and/or head works iff done by a very skilled mechanic.
My Elan has a bored out block with a forged Tiburon piston (slightly larger diameter) with two gaskets and slightly touched head and gasket.
I run up to 1.5 bar and hasn't given me too much trouble in the past year before I left.
That sounds like some tricky handywork there man. I wouldn't trust someone grinding pistons/heads unless they told me I could castrate them if they screwed something up. I'm afraid that's pretty risky in the long run. If you haven't had any problems after a long time, I'd be super impressed with whoever did the grinding and the work.
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Old Sep 23, 2001 | 08:00 PM
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Originally posted by Justin

Yes you would lose some horsepower depending on how low you drop it. But you will gain some torque.

Justin
You would typically loose a couple of hp (2-3) for every half point you drop the compression.

You most certainly won't gain more torque. Remember, if you are losing hp, you are losing torque.
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