A/C delete and underdrive pullies

jmd2914 · Jun 1, 2005

there is a loud whining sound coming from under my hood, and it gets louder as the rpms go up, im assuming its my a/c compressor, so i was going to get an a/c delete and some underdrive pullies while im at it. anyone have any posetive or negetive feedback on these two items? oh and anyone know what else that whining sound could be?

stang22 · Jun 1, 2005

That loud whining could be your power steering pump headed out to door. Open the hood up and try and pin-point it. Check you power steering fluid as well.

I have U/D pullies with the FMS A/C eliminator kit... no problems here.

Tim

Funhog · Jun 1, 2005

i dont know what the whining is but for the a/c delete i never heard of any problems. i am also looking into one. i have march u/d pullys but have not put them on yet. i hear that you may have a problem charging while at idle because the alt and also may have heating problems. however, not everyone has experienced these problems. i know people that have them and do not have any problem. if you are worried about the charging you can get a larger alt and also do not replace the alt pulley

jmd2914 · Jun 2, 2005

this is probably a dumb question, but if i do underdrive pullies do i still need the a/c eliminator if i want to get rid of my a/c?

stang22 · Jun 2, 2005

jmd2914 said:
this is probably a dumb question, but if i do underdrive pullies do i still need the a/c eliminator if i want to get rid of my a/c?

You can put a pulley in the place of the A/C, or you can just use the eliminator kit that moves the P/S pump up.

Tim

jmd2914 · Jun 2, 2005

have any of you noticed a significant gain from doing pullies and the eliminator kit?

stang22 · Jun 2, 2005

It depends what you would call significant? I don't have any numbers, but I am sure all of that will squeeze out an extra 5-10hp. You can't beat that for just bolt's on'/off's.

Tim

$uperstang · Jun 2, 2005

I have both, March under drive pullies and the A/C eliminator pulley and they help. But it will not be as noticeable as lets say a gear would be. When you buy under drive pulles you will get three, one for the crank, one for the alternator and one for the coolant pump. Don't install your alternator one because you will have some minor charging problems, especially if you have a sound system. Just use the crank and water pump one.

Foxfan88 · Jun 2, 2005

one of my managers at work has a whine in her car, its the alternater pulley bearing

jmd2914 · Jun 3, 2005

the whining is really loud, it almost sounds like a turbo spooling. so if i do underdrive pullies only use the one for the water pump and crank? dont use the one that comes for the alternator?

stang22 · Jun 3, 2005

I bolted all of my pullies up, even the alt pulley. I don't have any charging issues, but I don't have any huge stereo of anything like that.

Tim

jb89coupe · Jun 3, 2005

jmd2914 said:
the whining is really loud, it almost sounds like a turbo spooling. so if i do underdrive pullies only use the one for the water pump and crank? dont use the one that comes for the alternator?

Take your belt off and turn your accessories by hand. Try the power steering pump, the altenator, and the idler pulley and see which one is making the noise. Also, I run all 3 underdrive pulleys and have no charging issues with the stock altenator. I don't have a radio or hvac, but I do have an electric fan and a bottle heater to power. I even have a 2" race crank pulley that I've run on the street a few times.. voltage drops pretty low at idle, but it's never died on me. You mileage may vary of course.

jmd2914 · Jun 3, 2005

so what do i listen for? atleast for the whining sound?

jb89coupe · Jun 3, 2005

If you're turning the pulley by hand it will probably more of a chirp chirp sound than a whine.

jmd2914 · Jun 3, 2005

ok, and just out of curiosity, what are the odds of me having charging problems if my car isnt stripped? i have a sound system but its mostly stock, no subs or amp or anything

Daniel50 · Jun 3, 2005

i have a/c delete, mac underdrive pulleys, and no smog pump. no charging issues at all. and noticed a huge difference i went from a 14.2 to a 13.7 at the track. but keep in mind my 60 ft time went from a 2.1 to a 1.9. but my mph went from 97 to 100. noticibly different power too. engine bay looks way better, and lots more room to work now.

jmd2914 · Jun 3, 2005

ill probably still be running a smog pump just cuz i have to smog my car ( i live in california) but how exactly does the a/c bracket work? ( i know its a dumb question, just curious)

stang22 · Jun 3, 2005

jmd2914 said:
but how exactly does the a/c bracket work?

Are you talking about the delete kit? Remove the A/C compressor and move the P/S pump up with the bracket provided with the kit. Piece of cake.

Before:
View attachment 512929

After:
View attachment 512931

Tim

jmd2914 · Jun 3, 2005

ok i get it now. very clean engine bay by the way

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