S2000 Under The Hood S2000 Technical and Mechanical discussions.

Disappointing Dyno and Weird Curves...HELP XVIPER, UL

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Old 02-12-2004, 09:48 AM
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just purchased them. how much gap do you use?
Old 02-12-2004, 10:15 AM
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I gapped mine to about .044, but be carefull. The are extremely fragile.
Old 02-12-2004, 11:40 AM
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i always go by the butt-o-meter anyway...if it feels fast, then it must be fast ::vroom vroom::
Old 02-12-2004, 11:48 AM
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Originally posted by tesseract
i always go by the butt-o-meter anyway...if it feels fast, then it must be fast ::vroom vroom::
Now THAT is scientific! What in the hell were we thinking!?
Old 02-12-2004, 01:46 PM
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I had my short block replaced a while back at a Honda dealership and the car never had the same character as before. The dealer had the valves adjusted twice by two different supposed ase certified master mechanics and it was still not right( Lots of extra torque and power down low and lacking peak H.P.) I went to a regular non honda mechanic who mostly does mustangs to adjust my valves. He adjusted them to spec and my car was back to normal and even felt stronger than ever.



It wouldn't hurt to get the valves checked again by a third party.

This is my dyno plot to compare yours to.

Old 02-12-2004, 01:59 PM
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[QUOTE]Originally posted by hygiene boy
I had my short block replaced a while back at a Honda dealership and the car never had the same character as before. The dealer had the valves adjusted twice by two different supposed ase certified master mechanics and it was still not right( Lots of extra torque and power down low and lacking peak H.P.) I went to a regular non honda mechanic who mostly does mustangs to adjust my valves. He adjusted them to spec and my car was back to normal and even felt stronger than ever.
Old 02-12-2004, 03:58 PM
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Originally posted by spider
Did he adjust the dyno software to reflect your 4.77 gearing ratio?
I don't know much about dyno's beyond the fact that they're supposed to measure torque and hp.

If the dyno "thinks" the cars gearing is higher than it actually is, wouldn't that tend to artificially raise the measured torque and hp numbers? I'm thinking the lower gearing would allow the engine more leverage to spin the wheels relative to what the dyno "thinks" it should, assuming a higher gearing.

Am I wrong on this?

Just wondering......
Drive Safe,
Steve R.
Old 02-13-2004, 08:05 AM
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[QUOTE]Originally posted by gernby
Old 02-13-2004, 09:35 AM
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When my valves were out of whack and very loose done by Honda the car was stronger than usual down low with nothing up high as you can see from the dyno. I did not get the car re-dynoed after my valve adjustment because it seemed back to normal and even stronger than ever plus dynos aren't cheap. The bad valve job from Honda affected my peak H.P. , is this Tenblade's problem. . . . .? Who knows?
Old 02-13-2004, 10:41 AM
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That graph looks like VTEC wasn't working.


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