heat riser

  1. J

    FJ40 Intake / Exhaust Manifold

    Just wondering......... Has anyone blocked off the heat riser on a FJ40 2F stock exhaust manifold either using a block off plate or welded a plate over the heat riser opening and installed the stock intake and exhaust independently without bolting together? You would need to grind the bottom...
  2. J

    Exhaust Manifold

    I'm looking for some advice regarding the exhaust manifold surface that mates to the heat riser/intake. Do I need to clean up the surface any further(see pictures) or will the gasket compensate for the irregular surface? If so, what should I do to clean up? I do plan to eliminate the heat...
Top Bottom