Finster

iTrader: (1)

Does any body have this breather setup on their airpump?

I have an M2 large and I want to duplicate this guy's setup. I just have to find a breather like this first.

getgone

iTrader: (2)

Most speed shops will have a variety of filter sizes. Should be easy enough to pick one up w/o ordering one.

Mahjik

iTrader: (1)

Just get a small mower filter.

Finster

iTrader: (1)

too easy. thanks

sbnrx7

iTrader: (4)

I'm revising my intake and did this.....



Small breather from Discount Auto.

grimple1

iTrader: (1)

I've never had an airpump, so what is the logic behind this being filtered? I was under the impression that it went straight into the cat (a filter).

Mahjik

iTrader: (1)

It also dumps air to the exhaust ports.

dgeesaman

iTrader: (7)

If you don't filter the airpump air, I would expect to see a lot of soot in the secondary air system and cat. As it is now I found pretty good soot in the exhaust portions of my secondary air valves, and my car runs the stock airbox.

Dave

DaleClark

iTrader: (55)

Since the airpump is, well, an air pump, it's like a small engine. Sucks air in, compresses it, and ducts it to the air control valve, which determines where it should go.

If you have dirty, unfiltered air, the air pump will fail prematurely. Imagine your engine sucking in dirt and sand - that would eat up the seals in the engine like sandpaper, making it lose compression. Same principle here.

Mazda actually has a TSB on air filters for the airpump. They found that some of the early aftermarket intakes drew hot air into the airpump and would kill the airpump prematurely. So, take that with a grain of salt. But, if something did happen to the airpump, you can buy a box of them for nothing nowadays, they're pretty valueless in the used parts market.

The cleanest way to give the airpump air is a hose going to a nipple on the intake hardpipe so it pulls air through the intake.

Dale

Finster

iTrader: (1)

My intent is to get the airpipe inlet out of the way of the hot side IC pipe-which I want to run over the top of the airpump. Just like in the pic.

Yeah, apparently these small filters are so cheap and readily available there is really no reason to NOT filter the incoming air to the pump.

grimple1

iTrader: (1)

Good to know, thanks! the twin-turbo and emissions stuff is still a mystery to me since I've never dealt with it. Every time I see a stock RX7, "I'm like wow, that's a lot stuff for such a small engine bay". It's kind a like seeing under the hood of a 3000gt VR4 for the first time. THERE'S NO ROOM!

20B 3 Rotor

iTrader: (7)

I picked up the air pump filter from rx7.com. But I didnt want it sucking in hot air with the filter just sitting right there and causing the air pump to fail.

So I ran a hose from the air pump into the long plastic air duct (into the opening that was originally meant for the stock airbox air feed) and put the filter inside right near the intercooler duct.

This way the air pump gets all the cool air it needs.

Edit. Never thought of running a hose into the intake like dale clark said but this summer the air pump goes bye bye.

sbnrx7

iTrader: (4)

Dale is referring to a setup like this one offered by Fighters Garage.

getgone

iTrader: (2)

Still do not know why people fight the stock airbox. If you want to improve flow, mess w/ the inlet side of the airbox. The stock airbox is still the best way to isolate ingested air from the heat of the engine bay and also takes care of the air pump. Oh, well, probably just start another flame war.

Mahjik

iTrader: (1)

Because you can't fit a large SMIC or most FMIC piping with the stock airbox.

jd to rescue

iTrader: (3)

^^Mahjik doesn't count. He has no sense of humor.

wholelottahustle

If the OP is running a M2 airbox, there is a connection from the M2 airbox to the airpump.

jd to rescue

iTrader: (3)

The OP is just using the picture as an example, but you're right--why would you pull air from the engine bay rather than feed air to the air pump thru the airbox?

EDIT: Noted the OP has an M2