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lets talk carbs

Posted: December 1st, 2009, 9:42 am
by r1yfz
So whats the deal here...

41.4 pwk's.... Thats the largest pwk it appears they make... 41.5 is what i see people useing on 250r's....

i noticed one hoon running a 44 lectron.. Thats more of what i was thinking a unpluged cr500 motor would like..

Any one try fcr's? i know i can get a fcr from a yfz to 44mm...

Posted: December 1st, 2009, 1:05 pm
by ISBB
i run a 41mm PWK from sudco and it is night and day over the PJ. Plenty of over rev and it wakes it up in all departments with proper jetting and proper air getting into the cylinder. I have heard lectrons are a bitch to get tuned right for the application even on 4 stroke race quads most guys will opt for a built fcr over the lectrons.

just my penny's worth

Posted: December 1st, 2009, 2:05 pm
by r1yfz
i have tuned a few lectrons... i always dyno tune my machines... I also have found it easier to tune fcr's over lectrons. I have actually seen fcr's out perform lectrons on some yfz motors...

Anyone think a fcr would work on a cr500?

Posted: December 1st, 2009, 2:05 pm
by r1yfz
im all game for trying a 41.5 pwk i would be even more happy if it was a 42.5-43 though

Posted: December 1st, 2009, 4:43 pm
by 100hp honda
41.4 aint shit. i seen a 41.56238953 :lol:

Posted: December 1st, 2009, 7:39 pm
by r1yfz
was it custom gold plated?