just wanted to update the gang here on how my yfz520 with venom porting, pipe, piston ran last weekend.
i was very pleased with the power and honestly it ran stronger than i imagined. pretty much owned the strip with the black venom yfz last weekend. there weren,t any built 4 strokes there to compete with but about a half dozen banshees got their out of frame feelings hurt. not trying to add to the banshee rivalry, but it sure is awesome when the out-of-framers dart off after an unexpected loss and i really love when they pull up to my friends and ask if they know what the 4 stroke has under the hood!
there was a group from Illinois powersports there with 3 banshees ranging from 88hp to 100 plus hp. the fastest was a blue and white one with dual out of frame pipes on one side running alchohol. he was a hand full and very fast and on day one i lost more than i won for sure, but day two i rejetted and took out the sparky (sorry dcnr) and lowered my tire psi to get a better launch and i would say i won 6 out of 8. i had a great setup with the +6" swingarm and 12 paddle haulers. i'm 230lbs and it was still lifting me off the ground to the point i had to sit on the tank to launch. i had a white yfz480 that ran just behind my 520 as well.
i just want to thank john from venom for the excellent components, tersejr for all the tips and help along with sredrum for the excellent carb work. also a special thanks o the members of this great site for all the insight as well. i really look forward to heading back in the spring and hope to meet some folks from the site. thanks, again, Tom
