Hi, i baught my car and it had AC but i rarely use it and im not really a fan of it. i heard that hif you remove your AC it can give more power since there is less ratationg parts, so is that true or not, and up to how much HP can it gives ?? is it worth it ??

Thanks

 

false, when ur a/c isnt on the belt just free wheels on the pulley. there is no hp loss by it going around another pulley.


mike

 

Also, A/C is nice for defrost/defog.

Joel

 

Don't bother wasting your time, just leave it.

 

plus its illegal to release refrigerant in the air. then think about when you will want it again. if you took it off not only does it need recharged but you will also need to replace the accumulater/dryer on it cause it will have moisture in it. best advise if its on the street. leave it alone. i use on highway then turn it off if i race. no hp difference cause of no load on said engine.

 

ill argue this... rotating mass is rotating mass. have any of you ever held our AC compressor or actually spun one by hand? the thing is heavy as ***** and it DOES have resistance. is it worth the work involved and would it be noticable? prob not but the concept is there. i split mine and took the guts out and just put it back with no guts, so now it is a legitimate free spinning wheel. ill argue the same concept with balance shaft deletes and even things as small the alternator pulley... weight is weight, rotating mass is rotating mass. laturally you take those things out of the picture your going to get a quicker rev. BUT the trade off is engine harmonics. you start gettting lighter parts and deleting things youre going to run into balance issues later on down the line or at high rpms. my engine on the other hand is fully balanced to 10000rpms. something as small as an AC compressor or alt pulley wouldnt hurt, you start getting into crank dampners and lightweight flywheels and balance shafts thats where you run into your problems. hope this helps inform some

 

Man it's hot az hell in Illinois. I wouldn't give my air up for 1000hp dude lol. That being said...i really don't think it's worth it.

 

yes it will free up power. if you don't half ass it. take everything off and get a new belt. don't just have it still ride on the pulley with no internals cause its still spinning something. take it all off. this is how mine looks.



with the belt routed like that, in combination with no balance shafts and an electric water pump. the engine revs fast as hell. yes sometimes it sucks not having a/c but i just roll the windows down and turn on my fan. for what i'm using the car for, i can deal with no ac.

besides...fan ftw. haha

 

haha i love this

 

When the a/c is not on, it is just a free wheeling pulley. The resistance only applies when the clutch engages and the a/c is turned on.

 

a pulley still requires energy to be turned. if it didn't. you could barely tap it and it would spin for ever. but it doesnt, it stops. that and when the belt is tightened around it it becomes more of a load. if you're going to get rid of the ac, get rid of it all.

 

LoL EXsoccer1921 i love your concept !!! Thanks all for the replys i think ill leave it there until i get another daily driver, then ill get rid of it. I know it will free up some power like EXsoccer1921 said less rotating mass = more power but its probably not a big difference but when you put all togheter it can make the difference from losing to winning !!

 

just make sure you throw the turbo on there that he has too for the winning

 

yeah. only reason i went with the ac delete is cause my turbo is quite big. second largest on a daily driven cobalt, second to ryans. so i need all the help i can get spooling it. so little as load as possible was achieved. no ac, electric water pump, no balance shafts, 8,192rpm rev limit. only load on the belt is the alternator. only load on the chain are the cams and the oil pump.

 

YouTube - ‪IMAG0039_thm.AVI‬‏

hard to tell how fast i'm actually going cause it starts to zoom in. but, im at 70 when i go wide open, 124 when you hear the shift at 10seconds. 162mph at 17seconds.

 

ex soccer that is ******* legit

 

Damn, that is nasty. Not to be a thread jacker, but what all have you done to it? and 1/4mile times? (thread link if you have a build thread)

 

https://www.cobaltss.net/forums/adva...-while-250528/
https://www.cobaltss.net/forums/feat...y-11-a-253216/

 

What belt do you need for this setup?

 

While there's some drag its not much. With the clutch not engaged you can typically get several rotations of the clutch/pulley assembly. The power it takes to do that is probably under 1hp. Also the lost value to the vehicle is not worth it unless the vehicle is a race vehicle with no future intent of selling. On a 2.2 l61 car id say there will be intent of selling.

 

Should just need the belt off a base model cobalt that doesn't have AC

 

Ok thanks

 

lol uh .... all cobalts come with ac. haha

 

Not according to the manual lol the manual shows a belt routing for engines not equipped with ac

 

interesting. i've never come across a cobalt without ac