thepest
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| posted on 31/8/09 at 03:38 PM |
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x-flow Camshaft timing
Just thinking about playing with the timing of my kent 244 cam. Its sitting in my X-flow and even if its running well right now what would be the
changes should the cam be advanced by a couple of degrees? Would it effect the idle performance? what about the power band?
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mark chandler
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| posted on 31/8/09 at 04:05 PM |
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If the cam is central then advancing 5 - 7degrees will increase mid range by as much as 10%, loss 5% off the top and improve idle.
5 - 7 degrees retard will drop mid range by 5 - 10 % while add 5% at the top.
You really want it a little advanced, it improves things by reducing pumping losses.
Regards Mark
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thepest
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| posted on 1/9/09 at 04:28 PM |
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I think I'll give it a go then thanks! what are the pumping losses? Are you referring to the accelerator pump?
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MikeRJ
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| posted on 1/9/09 at 05:08 PM |
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quote:
Originally posted by thepest
I think I'll give it a go then thanks! what are the pumping losses?
The losses incurred by the engine whilst pumping air in and exhaust gasses out.
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