whos running 450er fcr carb?

[2muchquad]

Anybody running the 41mm fcr carb from a 450er?I have one on mine and its not quite dialed in completely but its getting there.What are you guys running for a needle?I took the stock non adjustable needle out of it and im using the needle that i had in my 37mm fcr when it was on...but its on the last notch,rich as it will get with out using washers.I dont like running this,i like room for adjustments.Is there a needle you guys are running from like a yfz450 or something.By the way im at a 52pilot and 158 main,way off from when i had the 37mm fcr from a 250f.No airbox custom boot from a lt500 quadzilla.:confused:

[cataway]

Originally posted by 2muchquad
Anybody running the 41mm fcr carb from a 450er?I have one on mine and its not quite dialed in completely but its getting there.What are you guys running for a needle?I took the stock non adjustable needle out of it and im using the needle that i had in my 37mm fcr when it was on...but its on the last notch,rich as it will get with out using washers.I dont like running this,i like room for adjustments.Is there a needle you guys are running from like a yfz450 or something.By the way im at a 52pilot and 158 main,way off from when i had the 37mm fcr from a 250f.No airbox custom boot from a lt500 quadzilla.:confused: JMHO i would like to think your on the lean side for a 41 , what does a 170 mj do for you ?

[2muchquad]

i started with a 165 to see if i was in the ball park,rich at wot,black smoke was obvious,i found another needle in my stash im playing with,i got it to run pretty good but im not finalized on my settings yet,ill index these current settings so when i get it to run like crap again i can come back to these ones at least:D

[cataway]

a 52 pilot !dang that sounds big , what did a 45 do for you?

[2muchquad]

i know,i started with a 45 and got too much popping so i figured it was lean on decel,fuel screw wouldnt cure it,im at a 48 now,took the 52 out i didnt like using the 52,just seemed too big compared to what everybody else was using,heck even stock 450rs use a 45 i think.My thing is im always changin stuff,cant leave anything alone so my jetting is always changing.Always looking for performance:D

[cataway]

by chance did you get the slide plate in up side down?

[2muchquad]

Hehe..nah i checked that with another fcr just to be sure,right now it runs pretty good.Im still going to play with the ap circuit,the 450er carbs dont have the adjusatable ap like the earlier fcr carbs so no BK mod for this.I read somewhere where you have your leak jet blocked off for maximum squirt..please explain:) I have a slight bog off idle when i hit full throttle from idle but its not really prevalent with real world riding.These fcrs can b a pain to tune but i love them:D

[2muchquad]

i sent you a message cataway..

[cataway]

Originally posted by 2muchquad
Hehe..nah i checked that with another fcr just to be sure,right now it runs pretty good.Im still going to play with the ap circuit,the 450er carbs dont have the adjusatable ap like the earlier fcr carbs so no BK mod for this.I read somewhere where you have your leak jet blocked off for maximum squirt..please explain:) I have a slight bog off idle when i hit full throttle from idle but its not really prevalent with real world riding.These fcrs can b a pain to tune but i love them:D

for me plugging off the LJ solved all my bog problems tieing the AP helps to

[2muchquad]

tieing the AP helps

cant do that on the 450er version of the fcr,its almost like to cut cost they made them cheaper from the earlier versions:confused:

[MR4Engine202]

just to let you know too the 06 up 450r carb is a 40mm the 07-08 crf is the 41mm

[MR4Engine202]

also get an ncvq needle