2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

bolt on cat for full TII RB exhaust

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Old Apr 24, 2006 | 10:27 PM
  #1  
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bolt on cat for full TII RB exhaust

does bonez high flo cat bolt on the racing beat full turbo back??

what other cats are there that will fit??
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Old Apr 24, 2006 | 10:29 PM
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From: Rohnert Park CA
No cats directly bolt to the RB downpipes. You would need a spacer or custom adapter or custom cat to bolt onto a RB downpipe.
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Old Apr 24, 2006 | 10:36 PM
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where can i find these spacers or custom adapters??
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Old Apr 24, 2006 | 10:56 PM
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Your local exhaust shop makes them for you
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Old Apr 24, 2006 | 10:59 PM
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You can have a cheapo cat flanged in to replace the presilencer. Any exhaust shop or performance shop will do it. Heres my temporary cat. Worked great for me with an LS1 airpump!
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Old Apr 24, 2006 | 11:34 PM
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cool
how much should they charge??
give me an idea so i don't get overcharged
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Old Apr 25, 2006 | 01:45 AM
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may I ask WHY you are doing this to the Turbo-Back?
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Old Apr 25, 2006 | 02:25 AM
  #8  
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because i need to pass emissions and i'm going to the cat out after I pass
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Old Apr 25, 2006 | 03:05 AM
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oooh........search for the airpump trick in the WEST forum and here to see other options.
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Old Apr 25, 2006 | 03:25 AM
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yea i already bid for a corvette air pump on ebay
now all i need is a cat that'll fit
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Old Apr 25, 2006 | 06:25 AM
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Originally Posted by HITMANEM2
yea i already bid for a corvette air pump on ebay
now all i need is a cat that'll fit
As Mark stated above, you won't find a cat that will be a direct fit. Get a universal cat with the air tube and have a shop weld the pipe extensions and flanges on to make it a custom fit. I had an original factory main cat that was made to fit the RB Turbo back system, but must have thrown it away as it didn't turn up last month during my garage cleaning project.
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