01Racing

I just got back from the dyno at Pacione Automotive Group. Great bunch of guys, and the coolest dyno ever. The Mustang Dyno let me do a top speed run in 5th gear ( i forgot to get the printout of the number) and we did a bunch of testing. When driving the car on the dyno you could real feel the load it was putting on as the rpm and speed increased. They program in wind resistance and weight of the vehicle to calculate horsepower. When i ran the car on the Dyno Jet it just free spun up to 10000RPM while it really worked to get up to RPM on the Mustang Dyno. Our maximum horsepower with the Danny Manning motor was 224 RWHP at 9188 RPM and that was 132 MPH. If you take the difference in the dyno's it probably would have pulled about 246 RWHP on a dyno jet which would be an increase of 16 RWHP over my old engine. A very happy day indeed! The only thing i didnt think of doing was the 1/4 mile run, but I will do that for sure next time! I strongly recommend if you are going to dyno your car, dont waste your money on a Dyno-Jet when you have this Mustang Dyno available to you.

Terrh

iTrader: (7)

last year I dynoed my car on a Dynapack, it was a really neat experience.. instead of having rollers like a tradional dyno, they bolt the car right to it with the wheels off..

How does wind resistance affect how much power the engine makes?

01Racing

When you testing rear wheel horsepower everything makes a difference. When your driving your car the wind resistance would slow you down, putting more of a load on the engine etc. Along the lines of why your engine horsepower is higher than your rear wheel horsepower.

classicauto

iTrader: (3)

holy crow 224? very nice.....that motor is birdged right? It sure sounded like it at meeting of the mazda's

Terrh

iTrader: (7)

how does the dyno figure out how aerodynamic your car is?

as cool as taking all that stuff into account is, (and I think the dynapack did this stuff too) I don't think that wind resistance changes how much force is being transmitted to the ground through your tires, is all that I'm saying.. sure it would affect accelleration, but so would having 5000LB of ballast, and that definatly shouldn't chage your WHP number.

engine horsepower is higher than WHP due to spinning more stuff and nothing else, as far as I was told!

or am I misunderstanding this?

23Racer

Terrh, you are basically correct in your concept. The Mustang Dyno wind resistance correction factors are really not to determine engine horsepower. Engine horsepower is determined by establishing RWHP and correcting for drivetrain loss (which is really just a calculation based on the difference between acceleration vs coastdown rates).

The Wind Resistance calculation function allows the Mustang Dyno to help simulate/estimate a 1/4 mile time, a top speed and other net data like HP required to run at certain speeds. It is a good function that has some relationship to real life. Other potential impacts could by wheel and tires weight and size.

The most important thing to remember is that the chassis dyno really measures acceleration against load and then uses mathematical calculations to establish torque, Engine and Rear Wheel HP. Also, each type of dyno uses a different method of loading the engine and each method has its pluses and minuses. The most important thing is to use the same dyno each time to give some type of consistency in your results. Consistency allows you to determine a real from - to measurement around any change to your car.

Eric

Terrh

iTrader: (7)

oh, so those are for additional functions!

OK, cool then!

thanks for clearing that up.

so how fast will your car go?

When I was on the dyno last year I think I made peak power (I have way taller gearing, I'm sure) at 6700RPM in 4th at 101?mph.

23Racer

Terrh, I don't know if you are asking Al or myself. Al can get 162 - 167 mph (4:88 and .858 5th gear with a 23.9 inch tall rear tire) and I can get high 145 - 148 mph (4:10 and 24.2 inch rear tire). Again all speeds are theoretical and can only be determined on track.

01Racing

If your wondering I was doing 132mph at 9188 rpm in 4th gear

swanton187

what mods do you have???

01Racing

Danny Manning built 13B 4-port that has been bridgeported, induction is a Holley 650 D.P. racing carb

Cheers!

What can it log?

Can it log manifold pressure vs RPM in additional to the normally logged AFR and HP/Torque vs RPM? What is their contact info? Where is their shop?

Terrh

iTrader: (7)

The dyno that I was on could log MAP vs RPM, I'd think most are the same.

it was a nice feature actually, you could see that my car fell flat on its face because boost was dropping like a rock.

IAN

iTrader: (3)

Congrads there Al.

Sounds like fun. Wish I knew you were there I could have swung by to bug you Or just turn deaf. LOL

01Racing

Cheers here is the contact info:
Pacione Automotive Group
960 Brock Rd South unit 2
Pickering, Ontario
905-831-6150
speak to Vic and tell him Alan Balinsky told you to call he will give you a special rate