HP estimate??
#12
Senior Member
DYNO OPERATOR
Join Date: Apr 2008
Posts: 504
Originally Posted by montecarlo84
Originally Posted by TopspeedLowet
My guess is 410 uncorrected horsepower peak. The calculation is pounds of fuel per hour divided by the Brake specific fuel consumption right off your dyno sheet. That is the observed horsepower, before the sea level correction that the engine is NOT doing on the dyno.
I would adjust my estimate of 410 to 450 if I could, but I will have to stick with the first card I played like every one else. The bore diameter is why I chose the 410 earlier.
#14
Senior Member
RACING JUNKIE
Join Date: Nov 2004
Location: St. Louis, Missouri
Posts: 661
TopspeedLowet
You are absolutely correct. I have seen this done more than once. Customers are unaware of this and only assume the dyno system is as correct as a calculator. Telling theirselves, It must be right because the dyno sheet says so.
I have also seen this used in a negative way as well with dishonest dyno operators.
I have seen the dishonest dyno operator run a motor knowing it is going to put out a low number, telling the engine owner after a few pulls on the dyno that he thinks his engine is capable of more horse power and if the engine owner would let him play with it for a day or so he will see what he can do. All the while the dyno operator knowing hes about to take this guy for a ride.
One or two days later the engine owner shows up and the dyno operator relucantly tells the engine owner He was able to get a little more power, I hope your happy with it. The dyno operator then indicates, Well I had to do this and I had to do that and this is going to cost you this and that is going to cost you that, putting the engine owner in an uncomfortable state,THEN>>>>>>>>>>>
The miracle dyno pull occurs, the engine owner is jumping up and down with the numbers his motor is making and he lays that wad of cash in the dyno operators hand.
EVERYBODY IS HAPPY BUT IT AIN'T RIGHT
You are absolutely correct. I have seen this done more than once. Customers are unaware of this and only assume the dyno system is as correct as a calculator. Telling theirselves, It must be right because the dyno sheet says so.
I have also seen this used in a negative way as well with dishonest dyno operators.
I have seen the dishonest dyno operator run a motor knowing it is going to put out a low number, telling the engine owner after a few pulls on the dyno that he thinks his engine is capable of more horse power and if the engine owner would let him play with it for a day or so he will see what he can do. All the while the dyno operator knowing hes about to take this guy for a ride.
One or two days later the engine owner shows up and the dyno operator relucantly tells the engine owner He was able to get a little more power, I hope your happy with it. The dyno operator then indicates, Well I had to do this and I had to do that and this is going to cost you this and that is going to cost you that, putting the engine owner in an uncomfortable state,THEN>>>>>>>>>>>
The miracle dyno pull occurs, the engine owner is jumping up and down with the numbers his motor is making and he lays that wad of cash in the dyno operators hand.
EVERYBODY IS HAPPY BUT IT AIN'T RIGHT
#15
Senior Member
DYNO OPERATOR
Join Date: Mar 2008
Location: New Orleans,La
Posts: 515
Originally Posted by TopspeedLowet
Originally Posted by montecarlo84
Originally Posted by TopspeedLowet
My guess is 410 uncorrected horsepower peak. The calculation is pounds of fuel per hour divided by the Brake specific fuel consumption right off your dyno sheet. That is the observed horsepower, before the sea level correction that the engine is NOT doing on the dyno.
I would adjust my estimate of 410 to 450 if I could, but I will have to stick with the first card I played like every one else. The bore diameter is why I chose the 410 earlier.
I was just tring to be funny. :lol: ,ma bad.
I only run my car at the track. It's more fun than a dyno.
#16
Member
JUNIOR BUILDER
Thread Starter
Join Date: Apr 2003
Posts: 79
Well I just back home from my dyno session and I came up a little short of my goal. My motor made 580hp and 540 ft/lbs of torque. It ran great and sounded great. I guess we will see what kind of times it turns in my car which is what really matters. Hopefully it will run in the 10's.
#17
Member
CRAFTSMAN
Join Date: Mar 2005
Location: Washington state
Posts: 61
slickfuel
APPRENTICE
Joined: 03 Mar 2005
Posts: 14
Location: Washington state
Posted: Thu Mar 05, 2009 8:06 am Post subject:
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I will say,.....
576 hp @ 6500rpm
532 ftlbs @ 5000rpm
_________________
Smoldery Smokey Burnouts To You All
APPRENTICE
Joined: 03 Mar 2005
Posts: 14
Location: Washington state
Posted: Thu Mar 05, 2009 8:06 am Post subject:
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I will say,.....
576 hp @ 6500rpm
532 ftlbs @ 5000rpm
_________________
Smoldery Smokey Burnouts To You All
.But you know I wished you would have had bigger numbers.
the Slickster
8)
Give me the specs on your car and, the conditions you will run in
and I will give that a shot too...????
#20
Senior Member
DYNO OPERATOR
Join Date: Mar 2008
Location: New Orleans,La
Posts: 515
Man that thing should see 10's easy, that's some pretty good numbers for a mild small ford.
Cp[/quote]
I just did one of those HP calculators on my setup #3000 me in it ,30in tall tire 2 shifts 4.56 gear it says my motor makes 450 to 477
that running a 10.90 at 123mph
Bryanm should have one fast ford!
Cp[/quote]
I just did one of those HP calculators on my setup #3000 me in it ,30in tall tire 2 shifts 4.56 gear it says my motor makes 450 to 477
that running a 10.90 at 123mph
Bryanm should have one fast ford!