finding a bulletin that shows port mod that takes
a hp peak from 22-48 with same displacement of 350cc
aint gonna happen, well has about same chances of being
found as those dyno print outs
and et slips
Joe :)
Dick J wrote:
>Dave,
>It's not a joke. that's where the red line was! That's where the factory put
>it! and that's where it stayed when the bike was put into race trim. And yes,
>that is a narrow band, and the RD 350 was known as the peakiest two stroke.
>Even harder than the Kawasaki triples to race.
>
>Have you ever ridden an rd350? Go ahead and see if you can scare up a factory
>bulletin for competition modification. They included a template for making
>new ports in the jugs. The stock RD 350 was 22.2 HP at 7000 stock. Redline
>was 7300 but it fell so flat at 7300 that you didn't really have to worry
>about red line - - you damn well knew when you hit it. Make the modifications
>in the bulletin and HP is raised to 48, but the red line didn't move, and all
>low end power was lost. You had about a seven humdred useable band on that
>bike. Good racersw used 300! The factory modification bulletin claimed that
>if the mods were done by the book, it would result in within 2 hp of the world
>champion Yamaha factory road racers. I had the modification done at Yamaha of
>Fort Walton in Florida. After it was done I consistently ran low 6s and an
>occasional high 5 in the 1/8th mile beating virtually all of the superbikes of
>the day (Kawa 1000 and Suzuki GS 1100) at the local north Fl!
>orida and
> southern Alabama drag strips. I hope you can find a copy of that factory
>bulletin. Tell a story enough times and if you're telling the truth, it stays
>the same. Find that factory bulletin!
>Dick J
>
>Dave Dahlgren <ddahlgren@snet.net> wrote:
>Not for nothing dick that is the most far fetched story i have heard from
>you to date...
>This is a joke right?
>The peak RPM is a mile too low, the power band is way too narrow for the
>peakiest 2 stroke.
>I guess if you tell the same story over and over and add a little every time
>this is where you get.
>What was the year and exact model of the this Yamaha I work with factory
>teams and bet i can scare up a dyno sheet for one. 7 hp give me a break.
>maybe you rode it like the BSA and forgot there was another 3000 rpm to go
>before you shifted..
>Give me a break
>Dave...
>
>
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