DEZERTE

how does removing your AC/power steering/air pump (s4s) yeild more horsepower? Im not QUITE sure i understand why people remove it

Madrx7racer

it doesn't yield more HP....it frees up more of the engine bay and it it less stuff for the motor to have to work......better torque? minimal gains in the HP dept.

DEZERTE

increases torq eh. torq is good.

steviep_

it gives the engine less things to spin thus reducing paracidic hp loss

Madrx7racer

kinda what I said, but less confusing.

dubrc

the ac compressor has a clutch so it only runs when it's turned on if everything is working right. The power steering on the other hand is running all the time causing parasitic loss as steviep. By removing them, you free up a couple hp, clean up the engine bay a bit, and save some weight, especially if you remove all the ac components.

--Paul

NZConvertible

A/C only draws a significant amount of power when it's switched on. P/S only draws a significant amount of power when the wheel is being turned. The rest of the time the "parasitic losses" are minimal, and certainly not noticable.

The biggest advantage to removing these is weight reduction, but you need to weigh up whether that's worth losing them. Some won't care, others will. The actual increase in performance is not going to be that much.

SpeedFreak03

Also it makes things a lot simpler. If I recall the AC has tons of lines and hoses coming out of it and ripping all that out makes it look a lot neater and easier to work on. I don't think it increases HP/TQ from ripping it out.

RXSevenSymphonies

iTrader: (2)

I think the best advantage of ripping stuff out is having SO much more room in the engine bay, second best advantage is the weight reduction.

shiftnmadkwik

plus there is a slight reduction in rotational mass, which frees up a little power. but removing a/c p/s and smog pump (the whole systems) will give you a clean bay and shave a lot of weight.

ddub

i can actually reach my spark plugs easily now

h20scorpio

Removing the smog pump, is bad idea if you are gonna get the car to pass emissions. Because, well, it never will without that magical pump.
But, I suppose you can take it off, and put it on again when it is time for emissions.
Illigal, and bad for the greens though.

Alias

Never use my A/C unless I am on the highway, then it makes up for it. You use more gas with the windows down than with the A/C on. The variable powersteering is kick ***, however mine seems to come on at weird times. Causing me to overcorrect.

DelSlow

iTrader: (2)

i took my ac, ps, and all smog **** off, and swaped in a manual rack. lost at least 100 lbs, maybe more, and its so much easier to work on the engine

ddub

100? i keep wondering if i did something wrong in removing my ps cuz it only weighed 17 lbs when i took it out.. the ac as well where i only got 33 lbs... ppl on the forum keep claiming 50 for each of those, but i dunno where they get that from

deltr0n`

shiftnmadkwik

not 5o each but all the ac parst condensor compressor hoses hardline.. all add up

a light single exhaust can shave you another 30 lbs or more as well

ddub

yah, i took out the condensor, drier, lines, hoses, bracket, compressor, everything and got 33 lbs for ac

beefhole

iTrader: (29)

How hard is it to swap in a manual rack?

superevil

i would think the second biggest advantage with removing air pump/ac/ps would be that there are less belts to wear,and way less stuff to break.less fuses to blow. of course il make my final decision on the ac when the heat hits this summer.

NZConvertible

You make that sound like it's actually a problem. Seriously, how often does any of that happen with A/C or P/S? Very seldom...

casio

these two are directly related. so much so, there's a mathematical equation that figures the other one. like converting farenheit to celsius.

casio

before or after removing the engine?

dorifc3s

well since it reduces parasitic loss and frees up hp, then u will see minimal gains of hp and trq on a wheel dyno?

BlackIceGuitar

Oh yeah, I had a AC line that was in the way when i went to change my O2 sensor a while back.