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

Air Pump Removal

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Old 12-21-02, 02:58 PM
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Unhappy Air Pump Removal

What else needs to be done to my 85 rx-7 since I have just removed my air pump? Is it dangerous to remove this? I was told I would get more HP, and of course, removing it takes a few pounds off. I have a stock exhaust system, but the catalytic converters have been removed. The rats nest is still there.

I am wondering if there is something that could catch fire from me not removing this thing correctly.

Anyone know about this for sure?

Please help.
Old 12-21-02, 03:04 PM
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you'll want to put on one of these:



it's a dual alternator belt pully that lets you add a 2nd belt, making sure your waterpump still turns. Without adding another belt after removing the airpump you leave a small amount of alt belt actually turning the waterpump, which makes it prone to slippage and therefore the potential to overheat (read: kill) your engine.
Old 12-21-02, 03:05 PM
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By removing the smog pump you will gain absolutely zero horsepower.. By removing the rats nest you will gain again, nothing in the lines of power. It just makes the thing remarkebely simple to work on.. Now removing the cats you will gain, some power... If you remove the air pump you will need to remove all 3 cats..

You wont catch anything on fire by just removing the cats and the air pump..

And get a dual alternator pulley

BTW: Horsepower gains are ONLY achieved by forcing more air/fuel through the motor... The fastest you can do this, the more horsepower you will make. If you have a better intake/carb etc combo, and better exhaust with barely little restriction you make more horsepower.

Last edited by MIKE-P-28; 12-21-02 at 03:25 PM.
Old 12-21-02, 03:10 PM
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You won't make any more HP except in the sense that the engine no longer has to devote HP to turn the pump...dumping the mechanical fan...a proven 5 - 10% HP increase by itself..( Ha ha! I've brought it up again...runs for flame-proof suit... ..) follows the same train of thought but the stock mech fan is a HUGE, MONSTROUS, GIGANTIC, WALA of a mechanical parasite that you will definitely notice has been removed unless the fan clutch was dead to begin with...

Last edited by mar3; 12-21-02 at 03:21 PM.
Old 12-21-02, 09:02 PM
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Dual belt pulley is not necessarily needed. Click on my sig to grab the rats nest removal tutorial - it also details removal of the airpump, so just skip ahead to that part. </shameless plug>
Old 12-21-02, 09:16 PM
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Originally posted by Manntis
you'll want to put on one of these:



it's a dual alternator belt pully that lets you add a 2nd belt, making sure your waterpump still turns. Without adding another belt after removing the airpump you leave a small amount of alt belt actually turning the waterpump, which makes it prone to slippage and therefore the potential to overheat (read: kill) your engine.
Hey Manntis, Ive gotten a nice clean new alternator since that was taken, you want a new picture?

~T.J.
Old 12-21-02, 09:18 PM
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Originally posted by pratch
Dual belt pulley is not necessarily needed. Click on my sig to grab the rats nest removal tutorial - it also details removal of the airpump, so just skip ahead to that part. </shameless plug>

Good thing you remembered to add your sig to the post eh :p
Old 12-21-02, 09:19 PM
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Originally posted by RotorMotorDriver

Hey Manntis, Ive gotten a nice clean new alternator since that was taken, you want a new picture?

~T.J.

how about some part numbers, the pulley and the belt
Old 12-21-02, 09:33 PM
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the pulley is off my website (database is being repaired for the next few hours)

It can normally be seen at http://www.rotorhead.ca/catalogue.php?category=engine

the extra belt is identical to the belt that is on there now, but it's recommended to replace the existing belt with a new one at the same time, or one will be streched and the other one new-tight, and the stretched one will slip.
Old 12-21-02, 10:15 PM
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"BTW: Horsepower gains are ONLY achieved by forcing more air/fuel through the motor... The fastest you can do this, the more horsepower you will make. If you have a better intake/carb etc combo, and better exhaust with barely little restriction you make more horsepower.:"

Horsepower can also be gained by removing paricitc (sp) load from an engine, how much power? it just depends. Anything running off a belt takes HP to turn, so removing the air pump WILL gain HP. BUT nothing worth while.
Old 12-21-02, 10:27 PM
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I just think it looks cool . That and its for insurance against the water pump slippage.

~T.J.
Old 12-22-02, 04:42 AM
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Rotormotordriver: Where can you get a dual alternator belt pully? Do you have to get a whole new alternator? I think they look cool as well, and it sounds like it would protect my engine.

Oh yeah, how much did yours cost you (dual alternator belt pully)?

-JW

This morning, I went to a salvage yard and pulled off a carb. It was a biotch to get at (driver-side firewall bolt). I decided it would be fun to remove a rats nest. Out came the hammer! Wham Wham! It was fun bashing it (ha ha), but I also got to see where all of those hoses go. It turned out that they were too proud of that carb, so I am going to go to a different place in a few hours and pull another one. I also ordered a rebuild kit. Target is Christmas morning to have a rebuilt carb. Family will probably delay work.
Old 12-22-02, 04:59 AM
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Aha, okay. Manntis; love that website. Nice girls! I will have to order a Dual Belt Alternator Pulley from you. It will be a week or so (Christmas). Thanks man.
Old 12-22-02, 06:40 AM
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Just ordered a dual alt pulley. I forgot you were in sask manntis lol.
Old 12-22-02, 07:33 AM
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Originally posted by Zulu



Good thing you remembered to add your sig to the post eh :p
You see that beautiful 7 at the bottom of my post? that would be my sig...

http://maz_tutorials.totalimmage.com

is the link that clicking on that picture would've taken you to

Here's the sig again just to make it easy.
Old 12-22-02, 08:16 PM
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That's a pretty neat trick, pratch...I would've never thought to drop the clicker on a pic, but I see it now that you pointed it out...pretty cool out-of-the-box thinking...
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