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MG MGB Technical - K&Ns and removed front silencer - Happy

Just wanted to say that I endorse the move to K&Ns and have also removed the front silencer on my 71 B. It seems to respond much better and it sounds very sporty - not too loud at all.

I hated to see that comparison report in which K&N did so poorly. I have fairly large K&Ns fitted in addition to the trumpets - air flow seems much more even and easy.

These steps were mentioned in Steve S's tech piece.

I will replace the distributor springs to correct some weakness there and my hope is all will be well,

Jeff
J Delk

Theory is that the fine strands of oil-soaked cotton vibrate due to the pulsing flow generated by the engine. This vibration sweeps the air and the minute particles are picked up by the oil-laden strands and are subsequently held in place.

Strong supporting evidence comes from the results of SAE/ISO dust tests. During such tests a K&N element rarely shows more than about 98% dust filtration efficiency. However, in use on an engine under desert
conditions it is clearly far superior to a paper element, which may have shown 99% efficiency on such a test. Official industry dust tests are conducted under STEADY flow conditions rather than the pulsing flow seen in an engine.

Use of K&Ns can show up in used oil anaylsis, but may be more to other factors rather such as maintenance and fitting rather than the filtering aspect.
Paul Wiley

This thread was discussed on 22/03/2007

MG MGB Technical index

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