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smog delete

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Old Dec 31, 2017 | 09:27 PM
  #1  
ssx2james's Avatar
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From: texas
Car: 1990 iroc
Engine: 350
Transmission: auto
smog delete

my 90 iroc with a 350 had the ac compressor lock up, so a shop deleted it and put a bracket with a pulley. now the car can be driven. now i had the cooling fan not wanting to turn off so took back to shop. they discovered that the smog pump had been removed by previous owner. they put on a pulley in that spot, but with no bracket. do they sell a bracket to put there or will my current setup hold. car has a serpentine belt.
Attached Thumbnails smog delete-unnamed.jpg  

Last edited by ssx2james; Jan 1, 2018 at 08:47 PM.
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Old Jan 1, 2018 | 12:45 PM
  #2  
GeneralDisorder's Avatar
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From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: smog delete

GM made some Canadian models without smog pumps:

Amazon Amazon


GD
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Old Jan 1, 2018 | 03:41 PM
  #3  
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From: northern VA
Car: 88 Sport Coupe Camaro
Engine: V6 2.8
Transmission: Borg-Warner T-5
Axle/Gears: RPO/GU6: 3.42
Re: smog delete

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Old Jan 1, 2018 | 03:41 PM
  #4  
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From: northern VA
Car: 88 Sport Coupe Camaro
Engine: V6 2.8
Transmission: Borg-Warner T-5
Axle/Gears: RPO/GU6: 3.42
Re: smog delete

http://www.hawksmotorsports.com/cama...delete-pulley/
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Old Jan 1, 2018 | 09:03 PM
  #5  
ssx2james's Avatar
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From: texas
Car: 1990 iroc
Engine: 350
Transmission: auto
Re: smog delete

the bottom pulley was the one they put on but there is no bracket in between there. will that bolt hold.
Attached Thumbnails smog delete-20180101_124605.jpg  
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Old Jan 2, 2018 | 11:54 AM
  #6  
GeneralDisorder's Avatar
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From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: smog delete

Lots of factory idlers are done that way. I wouldn't think it will be a problem. But you can actually just delete it entirely and route the belt differently if it scares you.

GD
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Old Jan 2, 2018 | 10:09 PM
  #7  
ssx2james's Avatar
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From: texas
Car: 1990 iroc
Engine: 350
Transmission: auto
Re: smog delete

if the belt is routed differently does it cause the water pump to spin the wrong way? shop said something about clockwise vs. counterclockwise?
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Old Jan 2, 2018 | 10:55 PM
  #8  
GeneralDisorder's Avatar
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From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: smog delete

Not an issue. This link details all the options:

http://sethirdgen.org/serpentine.htm

GD
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Old Jan 3, 2018 | 12:29 PM
  #9  
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From: Salina, KS
Re: smog delete

Seeing as how the A/C compressor is likely the highest load on the belt drive system, and it's been deleted, it's probably OK.

Personally I'd run either of the two GM delete pulleys available, or just run a shorter belt from the A/C delete to the crank. Any of those three options beats throwing a generic pulley onto a mounting ear that's not really intended to take that kind of stress.
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Old Jan 3, 2018 | 01:44 PM
  #10  
GeneralDisorder's Avatar
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From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: smog delete

I have the smog delete pulley on my serp setup and it works great. Personally it looks all lopsided if you don't have a pulley there. But functionally it's the same. Dealers choice.

GD
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