Any know how or directions would be greatly appreciated. I have owned this car 3 years and never once turned on the ac. Even when its off, it sucks power and adds weight. I want it out. Don't worry, I have no intentions of ever selling the car. Also curious about what belt size to use without ac pully. Hopefully the removal of the condenser from in front of the radiator will improve cooling as well. Thanks in advance.

 

The amount of power this uses in the idling mode cannot be more than an idler pulley. I believe that it operates when you use the defogging on the windshield, so if you can put up with that then go for it.

Weight wise I would consider losing some weight if you are like the average North American.
(Notice that I included Canadians and Mexicans in this statement, so do not be offended)

The amount of savings in gas dollars will take a long time to recoup the cost of a serpentine belt. As for cooling I would consider that a non issue.

But never ever say never about the car being sold, your young and that thought could last until tomorrow.

 

+1 you're really going to need that Aircon to defog the windows. When venting air from the outside in you vent in humidity. When you use the air con the humidity is taken out of the air. Therefore aiding in your windshield defogging.

 

Leave it alone, and continue to forget to use it...you will thank us all for this advise... It never goes well to screw with something that isn't causing a problem...because, it will cause a problem...and yes, this is you DAD talkin'....lol....

 

They say every 100 lbs is a tenth a second off of the quarter. I have lost 85 in 9 months. 315 to 230

As for defogging, the car isn't my daily driver, see signature. I put 75 miles on her in all of 2010. That's right, no zero's. So obviously, I get to be quite choosy with when I take it out. Weather isn't a factor. There is a straight deserted highway near my home which I do benchmark runs on occasionally. My Audi is plenty quick for the vast majority of my time and a great compliment to my MERCEDES coupe go Germany

My goal is to make my first car fast myself, not buy a faster car. I see 4 benefits for an ac delete.

1. Weight

2. Power

3. Cooling- more air to the radiator.

4. Aerodynamics- due to 3. I can delete the lower grilles which are half fake any way. I can remove them and make the hole front bumper one level plane.

 

If you want to save more try this, start the car, pull the battery out and dont stall. That is over 50 easy pounds off the front and not needed for track racing, use jumpers in the pits. It works. Wooody

Weekend

 

[quote=onehundred80]

Weight wise I would consider losing some weight if you are like the average North American.


I really should take 180's advice here

 

Teck,

if you must do this, use Dayco part # 5060925

-Jason

 

I have heard that a car's air conditioning system weighs about 30 pounds. I guess it depends on the car.

 

One thing you can do is disconnect the electrical connection to the compressor. That will keep the compressor clutch from egaging even for the defrost. That doesn't accomplish all of you goals, but it's a start. The pulley just free wheels if the clutch isn't engaged.

 

The 1/20th. of a sec. you'd lose isn't worth the loss of your AC.
Last time I checked it still gets pretty warm in Michigan.

If you're really serious about striping all the useless weight off your car that you can. Then by all means yank the AC, P.S. pump, cats, radio, heater, stock seats, air bags, glovebox, door panels, carpet, and replace the side and back window glass with plexiglass. Then you can remove the power window motors too.
Don't forget to take out the rear spoiler motor, just leave the spoiler in the up position. Though you may want to have a carbon fiber spoiler made as well, to match your CF hood.
Do some research, and look for the absolute lightest magnesium wheels you can find, and then you can start to "swiss cheese" every inner bracket you can get to. As mentioned, use an ultra light battery, or none at all.
Oh, there's always acid dipping your fenders, doors, and rear hatch.
When you get done, you should have the lightest Crossfire on the forum, and actually see some benefit in lower ET's. Of course it will be un-sellable, but like you said, you never plan on getting rid of it.
Good Luck
Congrats on the personal weight loss.

 

Call me token but this may be one of the most absurd threads I have seen you post. What possible gain do you think you can get from yanking the A/C. It is not a track car. If you want a track car build a track car. These persistent threads about how can I lose weight, or how can I make an NA go faster, how can I ect...Well save your money and stop wasting it and follow the Corky Bell turbo thread.

Jeez its a world platform 6 banger. The engine was limited by its original construction design. Unless you destroy the car, by acid dipping, drilling members out ect you car will always be an NA, and if you think this is a great idea when you break something it costs a fortune good luck finding the part. TheNA will not run faster than or equal to a 6 unless it has a turbo, an after market supercharger, or NOS.

If you want to beat a 6 by the turbo kit...

Soap box is open....

 

DAD,,,really. More like GRAND DAD!!!! Good advise though Doc. Still trying to learn the above advise myself. That is why my Crossfire is in North Carolina and I'm back in Florida

 

Ouch! Grand Dad? OK, Grand Dad says leave the damn car alone....drive it like you stole it... Hell, I once was running ET's at a track with AC on/windows up...running 15.30's back to back and got a trophy when others didn't.....it's all in what you run... That was in a '74 Vette...

 

No my favorite thread from him was the one where he wanted to swiss cheese his back wall. you know the one that the fuel tank sits behind.

 

Hmmm.....15.30's in a 74 Vette, WITH the AC on?
Must have been a BIG Block.

 

Thanks for the advice. I really appreciate the the members that will answer a question opposed to just critiszing it. I do respect all advice tho. Enough negative comments have made me defer from projects before. As for the battery, I think I will do Rob's lightweight battery. Anybody got reviews? My decision in removing the A/C will stand for 2 reasons. One, I get that it gets hot in MI occasionally, but I will re-state that my XF is not my daily. I put less than a hundred miles on it last year. I can choose to drive it in only the most favorable conditions. Second, I am an antisocial 21 year old who gets more out of touching German cars than socializing with peers. I have been known to perform unneccary maintenance on my A4 out of boredom. So how ever little the gain, taking it off and even putting it back on if need be would be the opposite of an inconvenience to me. People that have told me to leave things alone in the past and present are smart people who really understand cars, but do not understand my sittuation. Taking time out to try new projects is what keeps me going. So, back on topic, I think for power steering, as a novice driver, I may want to keep that. As for the part number--MurderedXF, how do you know that that belt is the right one for an A/C bypass? Just curious. Thanks all.

 

We understand your situation quite well.

You're bored, and you got a free car, and you want to completely destroy it.
You don't appreciate the car since it was handed to you, and you think its slow and boring in comparison to your Audi, so you want to screw it up as much as you can in the sake of making it suck just slightly less than it currently does.

If you really wanted to make it faster/quicker, you would remove the 19" rear tires, and put on a second set of front tires and wheels. That would drop off a pretty huge amount of weight, and reduce your 1/4 mile time by a couple tenths. Less rotational mass and friction means better acceleration.

BC.

 

bc i bypassed the a/c pulley since i dont need a/c in the winter here in jersey, and wanted to see if there would be significant gains.. basically just trial and error until i found the correct belt. i did not notice any difference so i put the pulley and belt back on and returned the belt
-jason

 

hell, it may have 16.30's, it's been awhile...but I loved those days and ET classes.. now you have the box