Dyno my baby today :)

[T701jz]

My stock set up back in the days...
JZA70 2.5L with 3" full exhaust, K&N intake, Mines ecu, and 2.5 intercooler pipes = 312whp (@13psi/7Krpm)...Just another comparison

 

[Greek]

Off the top of my head, 210-220. Horsepower is calculated. It requires a certain amount to cover distance and to achieve certain speed in time. Plug in your numbers. A 5 speed car will hit 100 easier than the A340 for obvious reasons.

http://www.corral.net/tech/brakehp.html

The DSM guys has an online calculator some time back. Same thing.

WEIGHT 3600 pounds
TRAP SPEED 100.58 mph
E/T 14.06 seconds



Total Horsepower 292 bhp
Horsepower Used 255


I was running 10 psi, stock everything but exhaust and radiator. I'm assuming that the 292 hp is at the crank, and the 255 is at the wheels?

 

[KicknAsphlt]

Something to consider, you won't lose as much power to altitude as a naturally aspirated car would. About the biggest difference is spool time, you give up a bit there...

Good to know, thanks!

 

[Nick M]

WEIGHT 3600 pounds
TRAP SPEED 100.58 mph
E/T 14.06 seconds

Total Horsepower 292 bhp
Horsepower Used 255

I was running 10 psi, stock everything but exhaust and radiator. I'm assuming that the 292 hp is at the crank, and the 255 is at the wheels?

You sure it is 3600 lbs with a driver and fuel? Base weight with a hard top and R154 is about 3550. It took 292 hp to push 3600 lbs up to 100 in a 1/4 mile. That is the energy spent, and isn't effected by gears. The ET, which was horsepower used can be changed by the gears. But speed doesn't usually change with a diff change, only ET. Some call it rwhp, but that isn't accurate. It really is speed method and ET method.

Speaking of calculating HP, at dragtimes.com, they have a link to the corrected ET and mph. It is hooked to a database with elevation and weather for the day you ran.

 

[Nick M]

Okay so after redoing the numbers a little and playing with it i used my last time at the track

98.90mph trap speed
14.368 e/t time

It was my car 89 Targa full interior/full engine parts AC cruise ect.
50lbs of tools
150lbs of me
125lbs of my girl in the car

so i entered 4000lbs as weight.

Mr Watt timed how long a horse took to walk an arm in a circle (he wasn't the only one). Force in a rotating motion is torque. How fast work is being done is horsepower. Literally. And the two are very intertwined. That calculator is applying those known work and force rates to what you did in your car. It took 306 hp to move your 4000 lbs 1/4 mile in 14.36 seconds. The best ET is just showing what a crappy driver and how heavy your car is. If you had a 3100 lb Fox body, you could run deep in the 13's with 306 hp.

 

[Turbo Habanero]

So what its saying is i only have 306 Crank horse power...

my mods on this day

Driftmotion intercooler kit 2.5 inch piping Hks ssqv3
3inch straight pipe stock turbo elbow
ct26 60-1 @ 12spike dropping to 10
3inch intake filter
lexus AFM
evo 8 560cc injectors
Stock ecu
Tires where dry rotted and super bald 225/40/R18's (no name brand)
Bkr7e gapped at .28

Does this seem right ??... or is there something really wrong with my car ?

 

[Greek]

You sure it is 3600 lbs with a driver and fuel? Base weight with a hard top and R154 is about 3550. It took 292 hp to push 3600 lbs up to 100 in a 1/4 mile. That is the energy spent, and isn't effected by gears. The ET, which was horsepower used can be changed by the gears. But speed doesn't usually change with a diff change, only ET. Some call it rwhp, but that isn't accurate. It really is speed method and ET method.

Speaking of calculating HP, at dragtimes.com, they have a link to the corrected ET and mph. It is hooked to a database with elevation and weather for the day you ran.

Whoops, then no I definitely got the weight wrong. With spare, me, and fuel I'd guess 3900-4000. Which the calculator says 316;277 respectively for 3900 pounds, and 324;284 for 4000. That seems like an awful lot for a stock motor on upped boost.

 

[Turbo Habanero]

Whoops, then no I definitely got the weight wrong. With spare, me, and fuel I'd guess 3900-4000. Which the calculator says 316;277 respectively for 3900 pounds, and 324;284 for 4000. That seems like an awful lot for a stock motor on upped boost.

Lol you have mote power then me sad face

 

[Greek]

I don't think it's correct though.

 

[Nick M]

I don't think it's correct though.

The only thing not correct would be the numbers put into the formula. Why would think the car should make more power? 300 hp is quite a bit on a small engine with a street head.

 

[Greek]

The only thing not correct would be the numbers put into the formula. Why would think the car should make more power? 300 hp is quite a bit on a small engine with a street head.

I'm thinking it's too much, not the other way around.

 

[Turbo Habanero]

I was just depressed that he's making more power then me with half the upgrades lol.

 

[mkiii222]

I'm just glad a MKIII had the balls to get up on Titan's dynojet this year. I was there last year and it was MKIV after MKIV with 1 DSM thrown in for giggles (he made 4xx after Darin laid down over 1100 in his yellow MKIV).

I always thought that combo produced a little more as well. Thought my stock CT, 3" turbo back, intake, and boost controller was good for 275 at the wheels. Oh wells, won't be stock fuel for much longer and then it's time to figure out how to break 12psi (MAFTPro vs MegaSquirt).

 

[Turbo Habanero]

Don't you think traction has Alittle to do with this calculator.

Just because if I'm spinning tires through the 60ft then my mph is going to be lower at the end of the track...

Maybe that's why it shows Greek at more hp on a stock ct then me on a 60-1.....

 

[IndigoMKII]

Don't you think traction has Alittle to do with this calculator.

Just because if I'm spinning tires through the 60ft then my mph is going to be lower at the end of the track...

Maybe that's why it shows Greek at more hp on a stock ct then me on a 60-1.....

Relax, you're putting down more power than you think.

 

[Turbo Habanero]

Relax, you're putting down more power than you think.

Lol I'm freakin out man

 

[laxboy36]

I'm just glad a MKIII had the balls to get up on Titan's dynojet this year. I was there last year and it was MKIV after MKIV with 1 DSM thrown in for giggles (he made 4xx after Darin laid down over 1100 in his yellow MKIV).

I always thought that combo produced a little more as well. Thought my stock CT, 3" turbo back, intake, and boost controller was good for 275 at the wheels. Oh wells, won't be stock fuel for much longer and then it's time to figure out how to break 12psi (MAFTPro vs MegaSquirt).

yeah, I was going to put it in the car show as just clean car, and then it was 10$ more for dyno, i said fuck it, i want numbers and i was shocked so. and i put up the same number as a 5.0 foxbody mustang

 

[te72]

Don't you think traction has Alittle to do with this calculator.

Just because if I'm spinning tires through the 60ft then my mph is going to be lower at the end of the track...

Actually, the more traction you have, the ET tends to be lower, but the MPH tends to be higher, at least from what I've seen over the years. Seems backwards for sure, but look at the cars that can't hook up for crap off the line, they cross anywhere from a few to a lot higher MPH than they should be for the ET.

 

[Turbo Habanero]

Maybe my motor is about to take a Crap lol

Unless that stock elbow was chocking the car out that much but I don't really feel I big difference with the 3inch elbow

 

[Nick M]

I'm thinking it's too much, not the other way around.

Ah, gotcha.