SuperSpec

SuperSpec

Wednesday 2 March 2016

Redesigned Exhaust System

For a long time I have thought I should fit a flexible joint into the exhaust system to isolate the engine vibration from the catalytic converter and silencer.   Now I had 3 complete exhaust systems
I felt now was the time.   So out came the angle grinder and the result is very good.

Ignore the reflection, I don't have twin exhausts :-)

So now the exhaust consists of the manifold, then a short length of pipe that mounts the lambda sensor, then a short flexible joint and finally the combined catalytic converter and heat shield.

It's a pity that it will all be hidden when I put the heat shield back on. Maybe I won't bother.

2 comments:

  1. Just noticed your lamba sensor goes under the car rather than through the grommit like mine!

    How is your exhaust mounted at the other end? Mine is with a bobbin which failed last year - replaced like for like - but want to improve it so it doesn't get the latteral load that it suffers from now.

    How you finding the flex pipe?

    ta Ed

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  2. That was just temporary while I was testing various sensors out. I never liked the fact that the sensor wires went through the grommet into the passenger footwell then through another grommet into the engine bay, so I drilled another hole in the side about 2" forward of the existing one so the wires go directly into the engine bay.

    When I bought the car it was bolted direct to the chassis. One day I visited Richard Stewart and he pointed out it should be on a bobbin, so I added one. It certainly made it quieter without the body acting as a sounding board, but after a year the vibration had wrecked the cat. That was the main reason for the flexible join and so far it looks very successful.

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