bikecarbfred
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| posted on 28/5/19 at 09:36 AM |
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abit rich under light throttle - cruising
A new set of CBR600 F4 1999 carbs ran good but rich on under heavy load on my 1.4 AFH head POLO set up. 150 jets. I purposly did it as I knew on the
next engine they would be perfect.
So now on my 1.6 set up , same engine AFH but ported and race cam, the carbs run better 13.5 - 14.2 under a decent load.
Only difference I notice was for some reason on feathering the accelerator like a grandad when cruising somet doesnt feel right.
AFR is 11.5. Just felt boggy especially up hill. As soon push down on pedal a litle more, the AFR increases to where it should be and you can feel
it's right. As if throttle response sucks!!!!
The ignition map on megajolt is a default one because I couldn't risk using the one I had on the 1.4 setup.
Maybe this is all normal, not sure.
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bikecarbfred
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| posted on 22/6/19 at 09:27 AM |
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turned out to be intake pipe ducting flange on the air box. it kept popping out one corner but i would not have thought that would result in a richer
mixture under light throttle.
if anything would have expected it to be more leaner.
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