Tested My New 3.4/3.6 Motor Yesterday....
02-13-2012, 07:22 PM
#47
02-15-2012, 02:27 PM
#49
Nordschleife Master
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Will they should be for all the work you've invested. Also remember that this was on a Dyno Dynamics machine. NASA adds 10% to their results to equal the results on a Dynojet. Let me know the numbers when you dyno please....
02-15-2012, 02:36 PM
#51
Three Wheelin'
I am a bit confussed....
02-15-2012, 09:48 PM
#52
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NASA has tested all of those units pretty comprehensively. They came to the conclusion that the Dynojet was the most prevelent unit across the country and made that their standard. They have added 10% premiums to the Mustang and Dyno Dynamics units as they've proved to provide lower results. The Dyno Dynamic operator we have out for our POC event last weekend says he's more like 15% lower than a Dynojet. YMMV....
02-16-2012, 12:56 PM
#53
Former Vendor
When we race dynos the numbers will really matter. A dyno is a tool, but it cannot be used solely for comparing performance. A dyno cannot measure throttle response and many other aspects of engine performance experienced at less than wide open throttle, where the engine will spend the majority of its time. The only motorsport that I have experienced that only uses WOT for the entire duration of the competition is drag racing. How many 911s do we see at the drag strip? When I go with my sponsored drag car (620HP aircooled VW) I generally never see a single one, even at the local track for test and tune or Friday night grudge matches.
I have effectively tuned an engine for my Wife's Land Speed car and lost 6HP at WOT on my dynojet chassis dyno. The result was a car that picked up 6 MPH and set 4 records in a single weekend. Prior to this the car made more HP and even more peak torque, but we were .5MPH from even setting a single record on THREE previous attempts at different events earlier in the year.
Peak numbers don't mean anything to the guy that wears a hat like mine. Where the concentration of power is means everything. Peak HP numbers are only good for selling engines to people that don't understand that peak numbers mean very little and further most of those people also don't understand that HP is achieved through torque multiplied by engine RPM. If I hand a dyno graph to someone and they look at the peak numbers first I usually just give up.
I have effectively tuned an engine for my Wife's Land Speed car and lost 6HP at WOT on my dynojet chassis dyno. The result was a car that picked up 6 MPH and set 4 records in a single weekend. Prior to this the car made more HP and even more peak torque, but we were .5MPH from even setting a single record on THREE previous attempts at different events earlier in the year.
Peak numbers don't mean anything to the guy that wears a hat like mine. Where the concentration of power is means everything. Peak HP numbers are only good for selling engines to people that don't understand that peak numbers mean very little and further most of those people also don't understand that HP is achieved through torque multiplied by engine RPM. If I hand a dyno graph to someone and they look at the peak numbers first I usually just give up.
02-17-2012, 11:00 AM
#55
Rennlist Member
Truer words could not have been spoken
02-17-2012, 12:30 PM
#56
Three Wheelin'
Originally Posted by
Peak numbers don't mean anything to the guy that wears a hat like mine. Where the concentration of power is means everything. [B
Peak numbers don't mean anything to the guy that wears a hat like mine. Where the concentration of power is means everything. [B
Peak HP numbers are only good for selling engines[/B] to people that don't understand that peak numbers mean very little and further most of those people also don't understand that HP is achieved through torque multiplied by engine RPM. If I hand a dyno graph to someone and they look at the peak numbers first I usually just give up.
