Hello.

I am the new proud owner of a 2001 Beta Rev3 250cc. I am new to the trials scenery and fairly new to enduro all together, so I thought I should drop by and say HI.

And since I'm here, can anyone point me to the right Dellorto model for my Beta? Its current carb is no good at all. It leaks and floods like crazy. I will try to apply Billy T's mods first, but I am seriously thinking of buying the better carb for her.

Thank you.

That Mikuni is a workhorse. If set up per Billy T's instructions it works perfectly and doesn't leak. The only carb I ever swapped out on a trials bike was from the stock Dell'Orto to a Mikuni on my '95 Techno. Since it is a 15 year old bike I'd check the slide, needle and needle jet for wear. Possibly replace the float valve but usually not necessary. Check the floats for wear marks and make sure they aren't rubbing the float bowl gasket. Trim the gasket with an x-a to if necessary. Around here the pilot jets are usually switched to a 27.5. Then go ride.

Welcome to the sport.

Thanks for replying. Indeed it worked great with Billy's mods. Until 2 weeks after when the problem came back. It leaks only when bike is tilted to the left. It also starves fuel at idle to mid throttle. I will look into it and report back with any fixes/fails.