I did a search and do not think that there has been anything to cover how to stop the noise from the air pump for the people who leave the air pump on (but don't use it). Yes, many of you will simply post "rip it off" but I choose not to. The reason for this is because this rex is my daily rex and will retain A/C (the air pump will balance the belts).

The air pump is fairly noisy and gives the engine a bad sound--which is unacceptable! I've heard of people gutting the pump's internals, but it ends up destryoing the bearings because the pump isn't balanced. Is there some kind of write-up on how to "correctly" remove the internals?
OR--How about just ditching the pump and getting an idling pulley (if that's what it's called). Any write-ups on how to make an idler, or where to buy one? (Maybe I'll be the first to custom fab one )

Sorry if I sound angry or anything... Kind of in a bad mood

Much appreciated,
FS

 

you could remove it, i wouldnt tho, sorry, i dont know much about it.

 

I would get two long hoses and direct them toward the underbody of the car near the exhaust "but not close enough where they get burnt".

 

i'll send you my pump if you want it. gimme S/H and 10 bucks, it's yours and any pluming you want- including the ACV, air box, filter, lower intake manifold 10 bucks for any or all of it.

 

just take it off and remove the rats nest

 

Well just take it off like others have said.. but get a dual sheeve alternator pulley and run 2 belts. Your AC belt should be fine dude.... or you can RIP EVERYTHING OUT.. hehehhe who needs AC?

 

stick one of those spinning whistle toys on it, and it will sound like a turbo spooling up...of course it'll probably spin too fast and melt, but hey..

anyways yeah i have the same issue, i think making a 'muffler' for it might work though..so much effort just to retain a useless part, but I need to pass smog every year, so i'll be swapping the stock exhaust in every time

 

What noise? Those things generally are pretty quiet.
Maybe you've got a bad bearing already?

 

Maybe your engine isn't stock and is louder than the air pumb, but once I blew the air pump hose off when I back fired or something, and I could hear a pulsating air noise, and it was pretty loud. Once I reconnected the hose the noise was unnoticeable. I would either do the long rubber hose route, or get the duel alt pulley from somewhere like racing beat.

 

That might be the case... I did hand turn the pump (with the belt off) to check if the bearings were bad awhile back--maybe they've gone bad now...

Anyway, I have a spare pump that i'll be working on in a few days. I'll try to gut and balance it as best I can, or I'll custom make my own idler.

 

why keep it or an idler at all?

 

Like i said earlier... I want to keep the belts COMPLETELY balanced, just like mazda intended them to be, mainly because I am still running A/C. This is my daily rex--I can't ditch the A/C because it's hot/humid as **** down here. I have another rex that is my race car (doesn't have A/C, air pump, etc, etc...).

Just remembered something that i've wondered about: How often do you change your belts?

FS

 

the air pump and the ac are on separte belts arent they?
if so then the balance will be fine

i replace mine when they start to crack or slip alot

btw you think huntsville is hot, you should be over here in southern MS lol
no a/c in either vehicle