1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Do I have to cap anything, with air pump removal

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Old Feb 13, 2003 | 08:03 PM
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Do I have to cap anything, with air pump removal

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
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Old Feb 13, 2003 | 08:06 PM
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The ACV. There's a plate that you can get on this page: http://mazdatrix.com/e7.htm
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Old Feb 13, 2003 | 08:09 PM
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Will I encounter any problems if I just take it off and dont block anything.

Oh yeah, and did you mean ACP
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Old Feb 14, 2003 | 10:33 AM
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Please, anybody?
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Old Feb 14, 2003 | 10:39 AM
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Are you removing the rest of the emissions? The usual reason for going dual pulley is after emissions removal.
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Old Feb 14, 2003 | 11:21 AM
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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
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Old Feb 14, 2003 | 01:17 PM
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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.
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Old Feb 14, 2003 | 01:20 PM
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If you dont cap the ACV, you will have a giant vacuum leak on the side of your intake manifold .

~T.J.
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Old Feb 14, 2003 | 01:27 PM
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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.



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Old Feb 14, 2003 | 02:14 PM
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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.
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Old Feb 14, 2003 | 03:24 PM
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The most notable plate that you will require is the ACCV plate, see:
http://www.racingbeat.com/resultset....rtnumber=16325




Best regards,


Jim Langer
Racing Beat, Inc.
714-779-8677
www.racingbeat.com
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Old Feb 14, 2003 | 03:44 PM
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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?
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Old Feb 14, 2003 | 04:59 PM
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M'trix sells it. Leshrak.
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Old Feb 14, 2003 | 06:33 PM
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Came with my exhaust kit.

~T.J.
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Old Feb 14, 2003 | 09:17 PM
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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!
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Old Feb 14, 2003 | 09:32 PM
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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.
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Old Feb 15, 2003 | 04:15 PM
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Can I weld it shut, wouldnt that be cheaper?
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Old Feb 15, 2003 | 05:11 PM
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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.
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Old Feb 15, 2003 | 05:23 PM
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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!
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Old Feb 15, 2003 | 07:31 PM
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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.
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Old Feb 15, 2003 | 08:17 PM
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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!
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Old Feb 15, 2003 | 11:36 PM
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as long as its sealed
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Old Feb 16, 2003 | 09:17 AM
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Thanks a lot everybody, I have decided to just weld it shut.

Peace
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