[audi20v] is there any benefit to removing my AC?
Sat, 24 May 2003 21:29:28 -0700
I (obviously) hadn't thought about it in-depth enough to really come up with
Using the same technique on a 90 CQ 20v , curb weight 3174, 164hp
19.4 lbs/hp stock
remove 70 lbs
which equates to about 168 hp...so essentially it would feel (if one could
feel this difference) as if it had gained 4hp
Worth every penny of that mod!!
----- Original Message -----
From: "Huw Powell" <email@example.com>
To: "Richard Hoffman" <firstname.lastname@example.org>
Sent: Saturday, May 24, 2003 8:47 PM
Subject: Re: [audi20v] is there any benefit to removing my AC?
> > Well...I personally would consider a 70 lb reduction a considerable step
> > the right direction! Assuming A)one never uses A/C, and B)one is
> > ecologically friendly in disposing of any remaining freon , I think it
> > modification worth considering! ESPECIALLY since that weight is
> > in the nose of the car.
> Another advantage: getting rid of stuff you're not using that is in the
> way of working on other stuff. (This thread assumes, of course, that AC
> is not wanted.)
> > I've heard that every 10 lbs is like a 1 hp gain, but I'm not sure the
> > validity of that claim.
> I would suspect that an analysis like that would require taking the hp
> to weight ratio of the entire car into account.
> EG, my '82 coupe, starting at 100 hp and a curb weight of roughly 2500
> lbs. = 25 lbs per hp.
> Knock off that figure mentioned of 70 lbs and it's 24.3 lbs/hp.
> to get to 24.3 at 2500 pounds requires 102.88 hp.
> IE, a "gain" of the weight removed divided by the stock weight/hp figure.
> 3 hp may not be much, but it is still 3 hp. And it is FREE. Actually,
> is better than free. By making he vehicle lighter to gain the virtual
> horsepower, you also slighty improve fuel economy (*very* slightly!).
> All these calculations ignore the comparison to the stock vehicle with
> the AC turned "on", which of course also consumes power. But for the
> purposes of this thread that is irrelevant.
> What I did was after giving up on the AC, I just removed bits of it
> whenever it was convenient. It's all gone now...
> Huw Powell