Rotary Revolution

Is there anything I have to cap or block off, with the removal of the air pump.

Im putting a dual sheave alt pulley on tommorow, and I just need to know.

Oh, besides. It is an 83

85RX7GS

iTrader: (1)

The ACV. There's a plate that you can get on this page: http://mazdatrix.com/e7.htm

Rotary Revolution

Will I encounter any problems if I just take it off and dont block anything.

Oh yeah, and did you mean ACP

Rotary Revolution

Please, anybody?

Rx7carl

Are you removing the rest of the emissions? The usual reason for going dual pulley is after emissions removal.

Wankelguy

ACV=Air control valve. It's located on the outboard side of the intake manifold, below the carb.

ACP=Automatic Colt Pistol. Like .45 ACP, etc. -WG

Rotary Revolution

I think that I have all of them off, because of the previous owner. The only hoses I have going in to my air canister, are the air pump hoses, and the crankcase vent. So I dont know what it all looks like. Does anyone have a pic of the rats nest.

Will I encounter problems of I dont cap off the ACV. Or will I be OK.

All help will be greatly appreciated.

RotorMotorDriver

iTrader: (1)

If you dont cap the ACV, you will have a giant vacuum leak on the side of your intake manifold .

~T.J.

RotorMotorDriver

iTrader: (1)

By the way, heres a picture of the ACV block off plate, and the "other" (catalytic converter air feed, right?) block off plate on my car. Notice how lame my header looks even after only a couple munths ? I wish it was still shiney new looking . Oh well...

~T.J.

Wankelguy

Doesn't the air pump also supply cooling air to the catalytic converters on '81 and above? My experience with air pump removal has all been with thermal reactor equipped cars.

ioTus

iTrader: (5)

Leshrak

Yes I believe the air pump(or ACV) also supplies air to cat in 81+ cars.
Removal of the air pump is typically part of the entire emmission crap removal, rats nest, cat, air pump, dual belt pulley.
Running the cat without an air pump is supposedly very bad mojo, I wouldn't know first hand however: the first thing I did was yank my cat off.
If you're still running a cat, and have th stock exhaust you might want to consider a racing beat exhaust.. or if you don't have the cash a bonez presilencer/racing pipe from rx7.com.

P.S. RotorMotorDriver where did you get that "other" (catalytic converter air feed, right?) block off plate?

Rx7carl

M'trix sells it. Leshrak.

RotorMotorDriver

iTrader: (1)

Came with my exhaust kit.

~T.J.

Rotary Revolution

Can you use anything else to for a cover plate, or is that it. Im having this done Monday, and I dont have time to order this part.

Can I just take the belt off for now, and remove the air pump assembly later when I have the plate.

But I would rather remedy this so I dont have to wait.

Thanks a lot!

Rx7carl

Use the gaskets as templates and make them out of sheetmetal. I used .090 aluminum. The RB/M'trix plates are relly thick steel and kinda overkill just to block the ports. Cheaper that way too.

Rotary Revolution

Can I weld it shut, wouldnt that be cheaper?

Rx7carl

Weld all that shut? its aluminum and the holes are too big to weld. Now you could JB weld them shut, I did that on my 79 manny on my racecar and it works fine. saved about 0.0001 oz. of weight.

Pedestrian X

jsut cutup a friggin soda pop can and cut out a peice wiht some scissors then duct tape it over the hole.. or JBweld! woooh!

RotorMotorDriver

iTrader: (1)

Hell with the pop can. Just duct tape the hole closed . Use some alcohol to clean up the surface so the tape sticks, and tape it closed . Haha, Im kidding of course, unless youre in a really tight pinch and need to go somewhere or something...Haha.

Seriously though, if you want to wait for the right parts, just take the belt off and wait. Theres no harm in that .

~T.J.

Rotary Revolution

But will I be alright if I put a peice of sheet metal over it, and then weld the sheet metal to the manifold?

This seems easiest to me!

Stepdaddy

as long as its sealed

Rotary Revolution

Thanks a lot everybody, I have decided to just weld it shut.

Peace