Hi all, I've been running various carbs on my AE86 for many years with varying levels of success (Mikuni PHH44, Webber 45, GSXR600, CBR900rr). My latest (and probably final) venture is running FCR41's in my 86. I have managed to lean out the idle mixture by using an old set of CBR900 slow jets but I'm having problems leaning out the part throttle I have tried everything I can possibly think of (without changing needles): - Adjust slow air jet to max (3 turns out) - Adjusting the needle fully up and down - Changing the slow fuel jet (Helped idle but not part throttle) Does anyone know what needle profile would suit the 4AGE engine or if their is another way that I haven't thought of. Heres a Pic for no reason cheers guys
Hi, last year I changed the needle on FCR 41, it was on my KTM but about the needle, there was a restricting 1 in for emissions which I changed to a OCEMN from a OBDVT, sorted my problem, maybe you need to change needles the other way round, sorry can't help you more.
