V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

air pump rattle

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Old Sep 20, 2009 | 09:00 PM
  #1  
superT's Avatar
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From: paulding, oh
Car: 1985 camaro z28
Engine: 355 sbc what else
Transmission: TH 350 manual vb/ 4200 stall
Axle/Gears: 4:30 on the street
air pump rattle

my sister has a 92 rs with the 3.1 and i was trying to figure out a way to remove or rebuild the air pump. The reason for this is that when the car is at an idle it sounds like it is going to explode. So if any one knows of a belt length that will work if i remove the pump or if anyone else has had this issue i would love to hear from you.


FYI: my sister told me the cheaper the better
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Old Sep 20, 2009 | 09:54 PM
  #2  
sienaz 86 2.8's Avatar
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Joined: May 2008
Posts: 45
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From: East Hampton, CT
Car: 86 firebird
Re: air pump rattle

i just payed i think 15$ for a belt w\o airpump but that was for my 86 2.8 so my belts are different but it was about the same price as the reg. one
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Old Sep 21, 2009 | 07:06 AM
  #3  
novafirebirdguy's Avatar
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Joined: Mar 2009
Posts: 503
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From: Des Moines, IA
Car: 90 Formula WS6, 86 Sport Coupe
Engine: 305 TBI, 2.8 MPFI
Transmission: 700r4, 700r4w/vette servos
Axle/Gears: 2.73 Open, 3.42 Open
Re: air pump rattle

You can just get a shorter belt and not run the pump. There's a tech article on how to do it for v8 cars but i'm not sure about 6 bangers. If you really wanna keep an air pump you can have mine for $5 plus shipping. As is though, never could hear it over my water pump and alternator.
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Old Sep 21, 2009 | 07:11 AM
  #4  
novafirebirdguy's Avatar
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Joined: Mar 2009
Posts: 503
Likes: 1
From: Des Moines, IA
Car: 90 Formula WS6, 86 Sport Coupe
Engine: 305 TBI, 2.8 MPFI
Transmission: 700r4, 700r4w/vette servos
Axle/Gears: 2.73 Open, 3.42 Open
Re: air pump rattle

Here ya go https://www.thirdgen.org/serpentine
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Old Sep 21, 2009 | 10:06 PM
  #5  
superT's Avatar
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From: paulding, oh
Car: 1985 camaro z28
Engine: 355 sbc what else
Transmission: TH 350 manual vb/ 4200 stall
Axle/Gears: 4:30 on the street
Re: air pump rattle

hey thanks guys, but I looked at the car today and I don't think their is a way to just run a shorter belt because the exsisting belt runs from the A/C to the alternator to the smog pump and then to the water pump. One thing that i saw in a post on the archives was someone put an idler pulley in place of the smog pump but i have no idea what idler would work. ??????????
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Old Sep 21, 2009 | 10:15 PM
  #6  
superT's Avatar
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Posts: 123
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From: paulding, oh
Car: 1985 camaro z28
Engine: 355 sbc what else
Transmission: TH 350 manual vb/ 4200 stall
Axle/Gears: 4:30 on the street
Re: air pump rattle

Originally Posted by novafirebirdguy
looked at this post and started to wish my sister had a v/8 in that damn car because what they did with those motors is brillant.

on the other hand it as a v/6 and the alternator and the a/c compressor are flip-flopped from the v/8 mounting but i thank you for the help

hey novafirebirdguy was your pump from a 3.1?
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Old Sep 21, 2009 | 10:40 PM
  #7  
Gumby's Avatar
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Joined: Oct 2001
Posts: 8,113
Likes: 6
From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: air pump rattle

can't rebuild an air pump, get a new one, have heard of folks gutting it but I dunno on that. Had a siezed one open once, how they last so long is beyond me, metal blades scrapping on aluminum walls......
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Old Sep 21, 2009 | 10:53 PM
  #8  
novafirebirdguy's Avatar
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Joined: Mar 2009
Posts: 503
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From: Des Moines, IA
Car: 90 Formula WS6, 86 Sport Coupe
Engine: 305 TBI, 2.8 MPFI
Transmission: 700r4, 700r4w/vette servos
Axle/Gears: 2.73 Open, 3.42 Open
Re: air pump rattle

Originally Posted by superT
looked at this post and started to wish my sister had a v/8 in that damn car because what they did with those motors is brillant.

on the other hand it as a v/6 and the alternator and the a/c compressor are flip-flopped from the v/8 mounting but i thank you for the help

hey novafirebirdguy was your pump from a 3.1?
I'm fairly certain you can use a delete pulley for a v8 car. My pump is from a 305 but the p/n is the same so it should work. But I not 100% positive. Try car-part.com and see if you can find a used one in your area. If not you can just have mine for the cost of shipping, I don't need it.
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Old Sep 23, 2009 | 09:17 PM
  #9  
chevyracingrox's Avatar
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Joined: Nov 2007
Posts: 1,092
Likes: 1
From: IL
Car: 88 IROC, 76 Malibu Classic
Engine: 350 TPI, 350
Transmission: 700R4, 4-speed
Axle/Gears: 10 bolt ????
Re: air pump rattle

many automatics didn't have an air pump, just an idler pulley in place of it. you need this pulley, I did it to mine.
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