$#()#($* 88th Official Hard at Work Thread #)(&*)(
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From: South Beach. Sadly in VA
Originally Posted by FF2Skip,Dec 12 2006, 10:38 AM
I've also been told that how tightly you strap down a car can make a difference when using roller dynos.
I have been told it matters WHO does the dyno. The same car can read different on the same day, even minutes after the previous dyno. And if you have a different human smashing the throttle different than the first, slighty faster, slightly slower can change the reading.
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From: Marshall, VA.
Skip,
The InlinePRO dyno was with the stock 10:1 diaphram
The Mach V dyno was with the 12:1 diaphram.
Richer fuel mix, but still not rich enough.
I was rather disappointed with the results. I was under the impression that since my bearings were bad when it was dyno'd at Inline and I had the whole thing rebuilt, that even with a richer fuel mix I should've been able to retain my 314ish whp.
BUT...now Kevin says they are lower then others so maybe I'm still right on track
The InlinePRO dyno was with the stock 10:1 diaphram
The Mach V dyno was with the 12:1 diaphram.
Richer fuel mix, but still not rich enough.
I was rather disappointed with the results. I was under the impression that since my bearings were bad when it was dyno'd at Inline and I had the whole thing rebuilt, that even with a richer fuel mix I should've been able to retain my 314ish whp.
BUT...now Kevin says they are lower then others so maybe I'm still right on track
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From: NOVA
Originally Posted by FF2Skip,Dec 12 2006, 10:38 AM
Kevin, do you know if that's a linear difference or is it more of a percentage? I do find it interesting nonetheless. If Church's in Cali reads higher than most others and we're not even close to theirs and Ultimate's is even lower, no one can ever know what they really have. 
I know they don't mean much for comparison purposes unless comparing cars are dyno'd the same day. I've also been told that how tightly you strap down a car can make a difference when using roller dynos.
I know they don't mean much for comparison purposes unless comparing cars are dyno'd the same day. I've also been told that how tightly you strap down a car can make a difference when using roller dynos.
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From: Lewisville, TX
Originally Posted by NO S8NT,Dec 12 2006, 10:49 AM
Honestly I don't know, but If I were to guess, I would go with percentage.
Mike, don't sweat it. If anyone wants to know, just whip out the higher dyno sheet.
Bench racing sucks anyway... because I always lost. 
Heck, most of the time most of my parts are on the bench!
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From: Marshall, VA.
I'm not worried much about numbers compared to others. I'm more worried about losing power and still being too damn lean. If I was a numbers queen I would've gone turbo. I'm still VERY happy with this setup.
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From: Lewisville, TX
Originally Posted by civicguyinva,Dec 12 2006, 10:55 AM
I'm not worried much about numbers compared to others. I'm more worried about losing power and still being too damn lean. If I was a numbers queen I would've gone turbo. I'm still VERY happy with this setup.
You may run a little leaner with the cool, dry air we've been having. I'm sure once we get some moisture in the air or temps warm up, your A/F ratio should fall back in line.
