[chrisl]

Hi,

I've been up to NHIS watching you guys running the vintage bikes and it looks like a blast. I didn't want to do anything to my '72 Bonnie. So,
I've picked up a '71 CB350 with 5k miles to prep for racing and may consider converting my Daytona too. I'm going to take the Penguin school in the sping at NHIS.

In the meantime I've looked at the USCRA rule book and beginning to
prep the CB for racing. The biggest question that I have is which bolts & nuts, etc need to be drilled/lock wired - is it pretty much everything?

I've also encountered an issue with the CB that is a little disconcerting - the bushing that clutch pushrod rides in (primary
side of the case) will dislodge if the clutch rod binds. Then
the sump will empty itself. I've reseated the bushing, but it looks
to be just hard rubber. I'm looking to get a new one and wondering if anyone else has encountered this before and if there is a brass bushing availble that wont be as prone to movement (just a bad design
from what I can see).


Thanks in advance
Chris
I'm new to racing - going to go to NHIS next spring and take the racing school.

 

[joe c]

its not a bushing, its a seal. wire it into place across the face. and put in a new one. otherwise you shouldnt have a problem with it. i have heard of them poping out, and people will say its because of this or that, but i mostly think its because its not installed correctly, old, or just plain fucked up. chris m's revs to like 11, other people bang shift them, and done other things, and there havent been problems. other people will say crankcase pressure, bangshifting, etc etc etc....i think they were asking people to make a plate or wire them in for a while. i just ran some safety wire across mine. ive never had a problem.

the uscra rule book says exactly what needs to be wired. any fluid retaining plug. anything having to do with the brakes, axles, or exhaust will be a good start.

jc

 

[craig641]

I can tell you what Gil has told me to fix. Make sure you have the throttle cables wired to the carbs and the cable wired to the housing around the twist grip. Basically the throttle cable wired at both ends. I've been told to wire the carb drain plugs but I've also seen a lot of bike that don't have them wired. There is a plug on the left side of the cb350 engine. Near the top in the cam case. This is a plug that is used to check to see if oil is getting to the top end. Wire that. If you're racing for the first time have more wired than you think you need. Gil has always been impressed that my shock bolts are wired. And everything else the rule book tells you to.

 

[ROSKO]

hit search in the upper right hand corner there... search 'lockwire' All oil retaining bolts, cables, linkages, grip/ footpeg rubber, everything on the brake Basically anything that can fall off the bike EXCEPT the rider.

Get a new seal and/or some yamabond. Good to go.

Don't forget a bellypan and a catch bottle for overflow from your carbs, breather etc.

BORN TO LURK, FORCED TO WORK.
www.NYCvinMoto.com
www.VinMoto.org

 

[chrisl]

Thanks for all the advice and suggestioons - sounds great!