My almost 500WHP Dyno

[mclaren55]

Well here is the chart from my pass about 4 weeks ago on the Dyno. This was WITHOUT nitrous, and a 10.6x a/f ratio in boost. The torque is cut off because the sensor wasn't picking up the signal properly.

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Any questions feel free to ask.

 

[94TSiAWD]

Looks good man. Torque curve must be pretty flat from where it disappears in order to keep the horsepower curve rising like that. Do have a list of mods anywhere?

 

[GSX4LIFE]

Whoa!!! Dejavou! Hi mc55. That Gpumper 5 really works huh? Im gonna be pretty close. What do ya say? Your 500hp to Wicked Spool.
Nice pull man. Get that Haltec running a little better than 10.6:1 though.

 

[mclaren55]

94TSiAWD - Sorry, no list of mods. I got tired of posting them all the time.

GSX4LIFE - Yes the G Pumper does actually work, and we are going later this week to see if we can get over 520+WHP by leaning it out and possibly playing with the timing a bit more.

 

[BoostinAWD]

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[Dannyboy1201]

SUP dawg.. LOOKING GOOD whats your best time..

 

[mclaren55]

Dunno, the car couldn't duplicate the power at the track. My BC for some reason had a duty % for way above 30PSI. So it was surging the whole way down the track. Did a 11.9 @122MPH. So at the dyno in a couple days, I will be reworking the BC along with the fuel maps.

 

[IPT]

That is a 60-1 compresor wheel correct??

 

[mclaren55]

Yes it is.

 

[Violater101]

and thats off spray

Nice #'s

 

[niterydr]

what are the specs of that g-pumper, i love those numbers...
besides the 10.6 a/f, what other settings/supporting mods were assisting in this dyno?

 

[mrmadmax]

O.K. mclaren55, don't flame me for this, but how can the dyno loose the signal from the torque sensor and still give you an accurate H.P. reading? Don't get me wrong, I'm VERY impressed with what you had up to 100 M.P.H. but how can the rest of the chart (including the peak H.P.) hold up to any scrutiny? Dyno's (and I've run them alot, both chassis and engine dyno's) don't measure horsepower, they measure torque. Horsepower is a function of torque (Torque X R.P.M. / 5250) and is "calculated" by the dyno. No torque signal= assumed H.P.

Like I said, impressive to 100 M.P.H. (hell, all around better than I'll ever do) but how can you claim 498 H.P.? Maybe I'm missing something...

 

[larryd]

eh thats nothing.. when u hit 500 i might be impressed

 

[GST4U2NV]

dynojets actually read HP not torque, and that the torque is a calculated figure from HP and RPM, so if the RPM pickup has problems it also loses the torque #s

 

[mclaren55]

niterydr - Its a 60-1 in an A/R 70, TD06H and 7cm housing. I really don't feel like listing supporting mods, basically anything you can think of is on the car.

mrmadmax - When I had the bottom axis set to RPM and the spark sensor would cut out I did get a HP reading. Just only up to about 6000RPM. So by setting it to speed, I got my figure all the way up. As for holding up to scrutiny, you think the dyno made the number up to make me happy? Hahahahaha.

 

[GSX_RCR]

I'm waiting for him to say..."stock block".

Good numbers. But I would think if someone is going to show their dyno run, at least list some mods...or else it's just a graph with numbers on it. Just do it THIS time, and we won't ask you ever again.

 

[mclaren55]

Ok this is what I can remember

Block

Ross 9.0:1 Pistons
Pauter Rods
90' 6 Bolt

Head

HKS 272 I/E
Ported Polished
Ferrera Valves/springs
3 Angle valve job
Titanium Retainers

Fuel

Aeromotive FPR
8 450CC Injectors Staged
Walbro 255LPH Pump
-6an lines all the way around

External Motor

Magnus Motorsports Intake Manifold
2.75" Aluminum Intercooler piping
G Pumper 5
Ported Exhaust Manifold
Tial 40MM Wastegate
HKS SSQV
K&N Filter
3" Turboback exhaust
Haltech E6K
APEXi AVC-R

Drivetrain

ACT2600 with 6 Puck
SSG Flywheel


Unless you want the rest, there it is. The rest being unimportant to power, like gauges, brakes, etc.

 

[mrmadmax]

Originally posted by mclaren55
mrmadmax - When I had the bottom axis set to RPM and the spark sensor would cut out I did get a HP reading. Just only up to about 6000RPM....

O.K. {turns red with embarassment} the "sensor" that you said lost signal from in the original post was R.P.M., and not torque (i.e. the load cell). I didn't realize that Dynojet uses an inertial load on the 248C, with no load cell at all, so your chart makes sense. Our shop uses a Clayton chassis water brake, a Superflow engine water brake, and a 2000 H.P. Engine Eddy brake for our dynos, so I'm not as familiar with the inertia dynos.

As for dynos that "read H.P.", almost all of them have a H.P. READOUT, but NONE of them measure H.P. directly. It's ALWAYS calculated, Either from acceleration of a large flywheel (dynojet 248C), or from measured torque and dyno R.P.M. (hence my comment about loosing the torque sensor signal).

Take a peek here for the brake H.P. dynos (it's cool how they actually show a curve for a Mits 3000 TT), or here for the inertia dynos on the bottom center and right side of the page.

Sorry for the confusion!

 

[2-0turbo]

Originally posted by GST4U2NV
dynojets actually read HP not torque, and that the torque is a calculated figure from HP and RPM, so if the RPM pickup has problems it also loses the torque #s

What are you smoking? Please, find me in a catalog (any catalog--or even internet site), a HP measuring instrument. They don't exist. You cannot directly "measure" HP. Dynos measure TORQUE (ft-lbs: a measure of work) and use RPM to calculate HP (ft-lbs/sec: work per unit time).

 

[ecoli]

Dynojets output HP numbers and use RPM to figure torque in software. If you run a car on a Dynojet and don't hook up the RPM pickup then you will only get HP, you won't get any torque numbers. So also if the RPM pickup is having trouble getting a good reading like in the dyno posted above, you can lose torque readings throughout the dyno run. That is also why the graph the graph is in MPH instead or RPMs. because it obviously lost RPM signal. When we dyno diesel cars(no spark) that don't want to spend a bunch extra to have an RPM pickup mounted on their crank pulley, we can only give them HP vs MPH. Then they have to go calculate their torque using HP, MPH and gear ratios.

Originally posted by 2-0turbo


What are you smoking? Please, find me in a catalog (any catalog--or even internet site), a HP measuring instrument. They don't exist. You cannot directly "measure" HP. Dynos measure TORQUE (ft-lbs: a measure of work) and use RPM to calculate HP (ft-lbs/sec: work per unit time).

 

[CarpeDSM]

How is it possible that HP or TQ is dependent on the other? The reason I ask is that there are lots of cars with similar HP but very different TQ, and vice versa. If there were a standard formula, how is that possible? Does anyone care to enlighten me?

 

[Agent Ezzard]

Click HERE! Everything you want to know with multiple examples.
It might be better if you enlighten yourself.

 

[CarpeDSM]

The formula doesn't work even with the #'s he provides for the Vette!

340 * 3200 / 5252 = 207.1
(Torque) (RPM) (HP)

What am I getting wrong here? Is that the HP at that RPM?

 

[Agent Ezzard]

that's the horsepower at 3200 rpm. if you are talking about the L98 vette, the 240hp peaks out at 4000 rpm so you still have 800 rpm left.