91 accord auto coupe dyno results

[cloudasc]

Well I went to the Advanced Racing Dynamics for the Dyno day, paid $20 for two pulls, unfortunately they are unable to get wtq readings. Ignore the 119HP Max reading, thats from when the tranny shifted into 4th on him... lol The real peak HP is 110.63

Here are the pictures:




Here is the video:


Overall I am happy with this baseline, it was 100*F outside, the cars an automatic (and we all know how much they love to rob us of power), it had been 3k miles since my last royal purple oil change, #2 cylinder is 5 psi less then the rest (old headgasket only leaks under pressure/heavy load, and likes to build up exhaust gasses in my cooling system). After I replace my headgasket, mill the head, new oem valves, bisimoto springs & 3-angle valve job, i'll have my car retested, and see how I sit then.

This is a f22a1 converted to a6 with a h23 im & tb, double-stack, bisi intake gasket & unorthodox pulleys, on a stock a1 air box w/ k&n panel, & stock a1 exhaust & PT6 Ecu

[foamypirate]

Not bad.

Just curious why the couldn't get a torque readout? That is HOW the dyno calculates horsepower, lol.

Horsepower is an imaginary number, if you will. It's just based off of torque x rpm/5252. You can see why I am baffled? If they couldn't get torque readings...then they couldn't display horsepower readings either. Strange.

[jmolina]

nice.....very clean cb too

20bucks is a deal for 2 pulls

[foamypirate]

Based on your speed, and an assumed 3rd gear, you made peak horsepower around 5200rpm, at which RPM you made approximately 120 lb-ft of torque based on hp =(tq * rpm)/ 5252.

HP x 5252 = tq * rpm or, 119 x 5252 = tq * 5200.

If you solve for tq, you get 120 lb-ft at 5200 rpm.

[cloudasc]

Not bad.

Just curious why the couldn't get a torque readout? That is HOW the dyno calculates horsepower, lol.

Horsepower is an imaginary number, if you will. It's just based off of torque x rpm/5252. You can see why I am baffled? If they couldn't get torque readings...then they couldn't display horsepower readings either. Strange.

I am not sure why they couldn't get the wtq reading, all the other fwd vehicles tested didn't get theirs either. If I had to guess, wtq would be min 115 somewhere around 5.2-5.6k.

[foamypirate]

I am not sure why they couldn't get the wtq reading, all the other fwd vehicles tested didn't get theirs either. If I had to guess, wtq would be around 115 somewhere around 5.2-5.6k.

See above post.

[cloudasc]

Well first I have to convert mph to rpm, then plot out the hp/rpm, and then multiply the (hp * rpm) / 5252 = wtq. Then plot the wtq next to the whp.

I figured it out, they couldn't get the torque reading, because they weren't recording rpms, since I don't have an aftermarket tach, or the factory tach wire marked for them to monitor.

[foamypirate]

Ah, that makes sense.

Well, in any case, you made 120 lb-ft of torque at your horsepower peak. This is based on a 1.208 3rd gear and a 4.285 final drive at 85mph, which is approximately 5200rpm, at which you made 119HP.

[cloudasc]

The peak HP was only 110, ignore the 119.70 max hp reading, thats from a spike when the tranny shifted on him into 4th.

[1991f22a1]

absolutely awesome. the cheapest ive found for dyno tune is 100/hr!!! sounds good too man!

[cloudasc]

nice.....very clean cb too

20bucks is a deal for 2 pulls

Thanks man, I try my best to keep the car clean. & the dyno was a deal, great for establishing a baseline to reference future mods.

absolutely awesome. the cheapest ive found for dyno tune is 100/hr!!! sounds good too man!

They were just doing straight pulls, but no afr (except by request for a little extra $$). Its amazing how much of a difference in tone this intake manifold makes on the engine.

I wonder how much the exhaust and stock airbox are restricting this motors "potential" ...

Edit: After doing some research, it appears as if automatics suffer about a 30% power loss. So 110whp * 1.3 = 143 crank hp... not bad for an a1 converted a6 +8hp over an normal a6 in 100* weather on 3k old royal purple, bisi intake gasket, double-stack, p&p h23 plenum & tb, k&n panel, on a motor thats at 90-95% optimal.

[cloudasc]

With a little patience, some research, mathmatical conversions, & plotting, I have plotted out my wtq from a whp/mph scale. Heres the picture:

This is plotting points follows 250rpm intervals from 3.5k to 6k rpms.

[foamypirate]

Nicely done, sir. That's actually not a half bad torque curve.

[cloudasc]

Thanks sir, I will say now, I wasn't expecting the wtq & whp curves to come out as nicely as they did, peak hp @ 6k, peak torque @ 4.5k (100+wtq from 4.1k-5.6k), I got a nice racing powerband going. Just the way I like it! I <3 my coupe.

[johnehonda]

thats decent considering its stock