No need for a stroker. Slightly bigger bore, port the head, port match the intake me exhaust port, stage two cams, +1 on the valves, Dasa exhaust, carb work…bazinga! Gnarly trail quad that’ll sit with everyone if not leave em behind and still be a reliable race bike at the same time My old Canam DS450 had some BCS motor work done to it. Talk about a monster
Nice info mate👌I just need to get my 04 to last a day out and would b happy and that's completely standard,dredd to think what a modified one would b like,love it and hate it equally lol
The only reason i didnt talk about those is ive had issues sometimes with the rod not being too short and causing a delay 🤙 but yes spot on if correct rod length def a must!
Cool rundown brother. I don't have a yfz 450 but I do have a 03 raptor 660r. I have an hmf pipe on it and holy hell it's loud. Can't remember what I jetted it at but the previous owner couldn't get it to run right and said he jetted it but they were stock sizes. I think I went up one size but it still pops. Last time I fired it she pissed fuel all over so I got a or 2 stuck floats just been to lazy to fix it plus here in jersey there's nowhere to ride without getting locked up lol.
I put an HMF pipe on my 2021 yfz450r, along with the HMF fuel optimizer tuned by HMF, it runs perfectly and sounds great. I think the HMF optimizer is better than a power commander.
i have the same exact fuel cap on my 05. along with cams, ported head bigger valves athena big bore with cp high comp piston and hd rod and a fallicon lightened and race prepped factory crank. And did an oil mod and 07 high vol pump and i have been beating the hell outta it for 7 years without anything but changing oil, filters and spark plugs. its a great bike i just had to take my time building and tuning it and its bullet proof.
i recently blew up my special edition 05 or 06 yfz i cant remember which one tbh but i was wondering is it possible to crank swap em old ones were 440s instead of 450s herd you can slap an 07 crank in and do a bit of carb work and she rips
I have a question if anyone could help me I just got done building my yfz 450 2004 top end and I timed it and stuff ran good as soon as I was done road it for about a day started it the next and it lost a bunch of power and starts to bog out and cut out when I push the thumb throttle in about 1/3 of the way it makes it backfire bad two if someone could help I’d really appreciate it
@@user-io5gn3kp8x did you do a break in period, if not could’ve prematurely worn the parts, if anything clean the carb and make sure it has fresh gas and clean air filter