Well dang. Thanks for the info though mandavedogg said:Pretty sure you cannot use banshee pistons on a R5. The R5 is piston port and doesn't have the windows that the reed valve RD and banshees have.
I did read about filing of the tab on the intake side for the rd's, I just assumed it would be the same for the r5,but it seems like that is not the caseclem said:The Banshee pistons do work in the RD350 but they need to be modified. Good quality R5 pistons may be hard to find. I think that Wossner may be the best bet.
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clem said:Good quality R5 pistons may be hard to find. I think that Wossner may be the best bet.
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Is he porting a set for you or just drawing port diagrams? Here's basic RD setup for street use: Raise exh port 1mm, widen it 2mm. Widen the intake 2mm and remove the lip at the cylinder on the port floor. Make sure both cylinders match when you're done. Leave the transfers alone unless you have a right angle hand piece. Match the case top to the cylinder base if you like. Cut the center tab off banshee Pistons as you already know bolt it back together and let it rip.hurco550 said:Maybe I should build an Rd top end after all then, but teazer has already been putting a bunch of time into r5 port maps for me though
Shoeman said:Every generation of Yam got better.
Shoeman said:Teazer, are you calculating his pipes reflected (or tuned) length and seeing how that matches various exhaust port Timings? I used to spend hours doing that sort of thing, first on paper using Jennings info, then later with TSR programs back in the Win95 days when those became available. I don't know you but it sounds like you take a solid scientific approach, hats off to you. I quit the racing and tuning game quite awhile ago now but I was the same way and my motors won a lot of races and satisfied street guys too. I'd add that in most cases like this, optimizing the pipe is not a necessity. It will gain that last extra edge for sure but on a street bike it's a luxury. Unless of course the pipe is a torquer by design and the ports are set for higher revs than the pipes are. The. You get a nasty powerband for sure
The reed valves and the 360deg intake timing they allow make a huge difference in how you can ride the RD vs the R5. Much easier. It's like power valve exhausts, the flexibility they gave was a real revelation back in the day. Every generation of Yam got better.
He wants the crusty old spokes back =/deviant said:I dunno why, but it's very satisfying to unlace a wheel with a pair of bolt cutters.
Ha, this guy, well two brothers have been at the M.C. salvage business for years. NOTHING gets pitched, which is probably part of why they have over 700 bikes + gobs of parts. I remember my first trip over there. I needed some parts, one of which was a fuse box for a cb550.the old one was trashed, cracked plastic, broken tabs and what not. They had me bolt it on the parts bike in place of the one I got. Seriously, nothing gets thrown away there lolclem said:Of course one day he'll get around to re plating those old things.
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