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Old 08-08-2005, 02:45 PM   #1
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Default PHANTOM DYNO

Hi everyone, new to the phantom dyno and would like to know what good #'s are on a good stock motor? I am using the steel flywheel and the dyno is set on 5 volts.... any help would be appreciated thank you....
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Old 08-08-2005, 04:41 PM   #2
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A simple experiment you might try...starting with you power source ( a battery, for example sake) .... hook up the dyno as you normally would and test a motor.. Now change your power source (a 25 amp Power Supply).... test the same motor again... Then if you feel froggy add an extension to the power cord between the dyno and power source (battery or ps)... your will have three distinctively different readings for the same motor.... The RPM will be the only reading that is consistant.

We race cars, not dyno's. A dyno is tool for you. My numbers for a good, brand new, never, on the track Monster Motor is as follows.

SOB...111.69 @ 10116..20777 @ 5.10..1.795..94% @ 14540
35.1/70.3/81.5

SOB*..116.44 @ 11343..21631 @ 5.10..1.813..2% @ 14850
38.5/72.0/83.5

Peak Hfire..121.26 @ 10919..19080 @ 3.20..1.903..85% @ 13045
38.5/72.2/79.9

Grn Machine 119.34 @ 10716..18997 @ 3.10..1.897..99% @ 14430
37.7/71.5/79.6

* Limited by the owners build specs...

I hope this helps... but the real test is on the track, referred to as lap times....These motors are use for asphalt and dirt ovals....when gear properly they will get 5.0 to 5.1 laps times on a 220 ft asphalt (better if I new how to set up a pan car) and 7.7-7.8 on the dirt (250 ft oval)...

Last edited by Hick; 08-08-2005 at 05:10 PM.
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Old 08-08-2005, 05:20 PM   #3
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Most Fantom dynos, are off a bit from one another.. there i usally a 1-5 point difference each way.. the only way to find out how yours reads is to find someone who knows how there dyno reads.. have them do a motor on there dyno... they can tell you if the motor was good or bad .. then take the motor and run it on yours... . this will get you a base line..


Ive never seen many touring racers use a dyno... I race oval. we always use a dyno.. Its alot more usefull in pan cars then sedan.. The only reason i can see is the different way we build motors..The dyno does not help you win races, but it will help you find out if your motor is good or a slug... Chasis prep and setup is stil the key to being fast.. after the setup is down, then the dyno numbers start to help.. i would say from what i have seen over the years.. 60-70 is good number range.. im not sure on the steel flywheel.. we use aluminum..
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Old 08-08-2005, 05:42 PM   #4
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After all your testing is done... In the Facts Machine software set-up, push number 5, it will change from Steel to alum or vice versa ... and convert the numbers for you.
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Old 08-08-2005, 07:41 PM   #5
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ok Hick and Burbs i appreciate your time for the answers , thank you ...
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Old 08-08-2005, 08:19 PM   #6
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I've had great luck with my Fantom Dyno. It's more accurate than an integy or orion motor checker, but not as expensive as a TurboDyno. What a dyno can help with is the small changes. Most racers (me included) can't tell the difference between a spring tension change. So it's near impossible to find a good motor setup without copying one you get from a professional motor builder. That's where the fantom comes into play. It shows you the changes in torque, rpm, and power after making small adjustments. After all that, you can maybe gain a tenth of speed down the straight or out of the turn. But that doesn't matter if you don't hit almost every turn perfect.
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Old 08-08-2005, 09:30 PM   #7
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hitting that turn is right pro4( lmao ) thanks for input...
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Old 08-09-2005, 04:53 AM   #8
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please replace "hit" with "carve"
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