triumphdave
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| posted on 28/4/08 at 09:04 PM |
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Tuning with a LM1
Hi Guys,
Engine is just about sorted Know (i think),so my mind is know on tuning.I have a LM1 air fuel ratio thingy so want to have a go at setting up my R1
carbs.What I need is a general idea of where to start in relation to ratios.I have done a bit of research and so far come up with WOT
12.5:1-13.0:1,and cruising 13.5:1-15.0:1
How do these figures sound?I think I have sort of got the wrong end of the stick,as I thought I was meant to be aiming at 14.7:1.
If you always do what you have always done you will always get what you have always got
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BenB
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| posted on 28/4/08 at 09:12 PM |
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You don't actually want to run @ 14.7:1 (stoch) all the time (even if that's supposidly the most efficient combustion ratio). When
you're on a trailing throttle off load you can run quite lean but when you're revving the nuts of the engine it's a good idea to
give it a bit extra fuel to cool it down a bit......
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paulf
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| posted on 28/4/08 at 09:26 PM |
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The 14.7/1 ratio is to keep catalytic converters happy, running leaner off load is more efficent but produces more nitrous oxide emissions hence the
check for Lambda at MOT. 12.5 gives best power and helps to prevent any chance of pre ignition etc when under full load.
Paul.
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stevebubs
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| posted on 28/4/08 at 11:06 PM |
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http://www.g2.nu/chris/misc/emerald-afr/
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