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Thread: stock length of the catalytic converters

  1. #1
    Join Date
    Mar 2006
    Location
    seattle,WA
    Posts
    29

    stock length of the catalytic converters

    I was just wondering on the length of the stock catalytic converter on a 1990 sc

  2. #2
    Join Date
    Apr 2002
    Location
    Lakeville, MN
    Posts
    13,517
    Passenger side is different than drivers side. I'll guess at more than 16", less than 24" long.

    Drivers side is slightly shorter.

  3. #3
    Join Date
    Jan 2007
    Location
    Denver
    Posts
    57
    I just had mine replaced today (again) at Meineke under warranty. They used universal fit converters with a 2.25" diameter inlet and outlet pipe. The converters themselves were 13" to 14" long. I only got ~25,000 miles on the last set. They were plugged and partially fused - probably due to the car running rich when my cam position sensor was bad. I was lucky I didn't blow a head gasket they were plugged so bad. Fortunately I was tipped off when the vacuum hose to my EGR PFE transducer blew off at the EGR riser tube and started giving a loud hissing noise which could be heard at more than half throttle. Kind of like a safety relief valve - but only for the right exhaust side which was plugged the worst.

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