Vehicle & Technical > Discovery

tubular manifolds / exhaust system

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Tyke:

--- Quote ---They have some clever reverse cone thingy in the exhaust that stops the back pulsing
--- End quote ---


It actually 'stretches' the pulse and reduces it's return pressure . . . Norton was using a similar technique ('megaphone exhausts/expansion chambers') on it's racing bikes way back in the thirties . . . . gives a wider spread of usable power and helps overcome any 'peakiness' from agressive cams and valve timing.

For the average 'street tuner' simply work on the head, flowing and polishing the inlets and then sort a free flow exhaust and you will be halfway to getting a good bit more kick from your motor.

Range Rover Blues:
Which is what you have with the 3.9 EFi system anyway, it takes some beating for performace but I find it unreliable.

Tyke:

--- Quote ---takes some beating for performace but I find it unreliable
--- End quote ---


One of the prices we have to pay for the increased performance . . . unfortunately . . . . but that's the way of things once you start the 'tweaking' game  :(

But get it all right and . . . . well that's another story  :twisted:

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