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3fe exhaust?

Discussion in '80-Series Tech' started by cruiserbill, Oct 16, 2003.

  1. cruiserbill

    cruiserbill

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    92 fj80 3fe.. are there any options for aftermarket manifold pipes. pipes from the manifold to the cats, with the o2 sensor holes. ca smog approved????
     
  2. Hltoppr

    Hltoppr

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    ...not that I know of.... :'(

    -H-
     
  3. 92Cruiser

    92Cruiser

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  4. DanKunz

    DanKunz SILVER Star

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    Everyone I have talked to with a 3FE says not to put a header on it but to run a less restrictive exhaust and cat on the stock manifold.

    Reason: Heat.

    Unless you can insulate the headers REALLY (and I mean REALLY) well there is apparently a tendency to cause issues with any electronics and wires on that side of the engine bay...

    which is pretty much everything on a 3FE in an 80
     
  5. cruiserbill

    cruiserbill

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    i have heard of the heat issues, and do not want to go that route. i also understand that free flowing the exhaust will help, but how, where do i get better, larger manifold pipes. yes i may be able to persuade someone to make them, but they wont be CA legal. my exhaust shop tells me once he gets past the 02 sensors its fair game as long as it has the cats and muffler.
     
  6. Seminole

    Seminole

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    ??? I'm in the same boat too. discountconvertrs.com has the high flow cats with the front pipe/O2 sensor bung, but I haven't found anyplace besides OEM for the actual pipes off the manifold (headers?). I am trying to get some quotes for a complete custom job from manifold back (front pipes to dual inlet high flow cat, single out to flowmaster) Trying to tuck it all up and out of the way and open it up a bit.
     
  7. cruiserbill

    cruiserbill

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    my exhaust shop said they could do a complete custom job for $800. but it will not be CA complient because of the front pipes.
     
  8. bjowett

    bjowett Supporting Vendor

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    The manifolds look pretty good, but there is definetly some gain to be had in the down pipe (manifold to cat pipe) as well as the rest of the exhaust. The trick will be to make them appear stock, and keep the O2 sensor the same distance from the manifold. Probably some nice mandrel bent pieces of 304 stainless could be used to form something close. The 304 will brown a bit over time, and thus look stock. It will reduce underhood heat issues as SS transfers heat roughly 200% slower than regular steel.

    I'm waiting for my buddy with his FJ62 to lose his exhaust so we can build a nice stainless system for it from the manifolds back. You ready yet, Lou?