I was Bonneville bound when I first tried to post this before leaving the house Wednesday. That post doesn't seem to have taken. Anyway, at Bonneville now, or rather in Wendover NV now near the salt flats. Bonneville motorcycle speed trials registration, pit setup, tech inspection and fuel tomorrow Saturday. Land Speed runs start Sunday.
I've run my stock 75 CB750 here in '16, '17 and '19 in the stock classic (pre-1981) class. Going to run a 1971 CB500 this year but will try some modifications. That would be the modified classic gas class. Mods include a Mike Rieck prepared head with oversize intakes, and everything that should go along with that, CR26 carbs, 4-1 Hindle exhaust from RippleRockRacers, HD cam chain from CycleX. I went through the bottom end and installed new primary chain, crank was balanced by APE and stock rods shotpeened and installed with heavier rod bolts. Per Mike's recommendation, sent my cam to Megacycle for their 126-20 grind with custom 110* lobe centers. Dyna S ignition. Following that I screwed it up by not acting quickly enough to get custom pistons forged. Started to run into trouble finding anyone who could forge pistons smaller than 58mm. Finally was told some could be billet cut but the backlog would put me near my departure date. Well the pistons didn't arrive as of last Friday so I put the motor together with the stock cam (I procured another) and pistons.
After getting the head bolt washer out of the engine where I dropped it, and getting the motor together and in, I got the bike started Saturday morning, got it actually running Saturday night and took it for a test ride Sunday morning in the neighborhood. It just wouldn't get going, kept stumbling, finally quit. Oh, gas was off. Got her going again, tried to hit the throttle hard at 3500rpm, it hesitated for just a second, and then bam, the exhaust screamed, and it took the heck off, hit second and did it again. I went home grinning ear to ear though it wasn't much of a test in the neighborhood streets.
I have no idea what it will do out here on the salt but at least I was able to bring a running bike. Looking back just now at a post from 2017 you guys had so much great advice on tuning, gearing, dyno information, etc. that I wont be able to utilize until next year. There is a fellow from Texas who I've spoken to but not met who built his own portable dyno and brought it to the salt this year. He offered it up, we'll see. But I am totally excited to be here again and I think I smiled the entire 1500-mile trip from Texas.
Looking forward to seeing Dennis and Jerry again, and thanks to Mike Rieck for all his work, time and advice. I'll post a few pics and will report on the escapades for those interested.
