Haven't seen much talk about removing power from the belt to get your HP return. Anyone done this? I bought a set of Lightweight pulleys plan on installing them as well. I never use my AC anyway so I figured id get the signifigant HP return from it instead.

Anyone seen the results on a rx-8? Should put roughly 30% more power to the wheels.

 

63 HP?

 

A/C should sap about 7hp from the engine crank - when it is on!

When the a/c is off, or under full throttle, the parasitic loss from the belt / clutch is negligible.

You'd do way better by reducing unsprung weight.

Or, taking your golfclubs and such out of the trunk.

 

according to jeff, the AC takes 20hp to run. but as you said, you dont notice it because when you hit the throttle it turns off. above 65% throttle position it cuts off.

take out all the seats except the drivers seat for a more noticeable gain in acceleration.

 

I *really* doubt that you will see anything close to 30% gain

I agree w/ Silver06...

 

you're not getting anywhere near that much hp by disabling the A/C. Good idea but it's just not realistic, sorry.

 

reminds me of a taxi cab driver I had once down deep in the interior of Mexico. It was probably 11PM at night and we were going a good 120 kph winding through mountain passes and he kept turning off the headlights.

After about 20 minutes I finally asked him WTF he was doing and he informed me that he was saving gas...

 

Pull the 'a/c clutch' 10 amp fuse to totally disable it, and see if you notice ANY difference.....

S

 

Alright, figured it was worth a shot, I'll stick to just using the new pulleys then.
Tnx

 

yes, that is a good idea.

 

I guess I don't understand what "removing power from the belt" means. If the AC is off, the pulley turns freely.

One thing to keep in mind is that despite the indicator lights, the AC will ALWAYS be on with the blower, EXCEPT when the blower is in full-face mode. So, that is the way to turn it off without pulling a fuse.

 

lmao at 30% more power to the wheels, even if you took the whole a/c unit out to save wieght you wouldnt see thoes kind of numbers

 

Ok, not very constuctive reply...

Listen, this car is new to me. Im a SuperBike rider normally. I came here seeking advice so I didn't make any lame mistakes. And I was going off somthing I heard from sombody. I got the answer I was looking from Silver
( ty silver )

Tnx to everyone that replied with somthing constructive to say.

 

So you're saying the A/C compressor engages in feet mode, face/feet mode, and feet/defrost mode when the blower is on?

 

geez man, don't be so touchy. It's a good story.. admit it

 

 

Yes AC does turn on when you have Windshield defrost on, but if you hit ac buton it disables it ... as you can tell by rpms when car idles ...

When AC is not on you are not loosing any power because the wheel is disengaged from the unit and spins freely without any resistance.

With AC on you loos 5-7whp ... we had civic dynoed to see the differance .

 

you had a civic dyno'd to tell what the a/c does on the rx8?

....

if jeff (mazdamaniac) says OUR a/c takes 20hp to run. i believe him.

 

but it doesnt matter b/c the a/c shuts off at 65% throttle, so no use taking it off

 

The AP under pulley is your best friend. My friend has that mod and it works on the low end. I'm getting mine soon

 

Yes, even though the AC light does not illuminate.

 

rofl