Yeah, I think my GP1 came without restrictions. It is sold as a scooter, not moped.
Thank you for the link!! you're the best you anonymous person. :)
> The exhaust restictor is pretty obvious. If you don't see it
> about 20cm down from where the exhaust comes out of the
> engine then it doesn't have one. Here in the US, the GP1 is
> sold as a moped, and therefore have all kinds of
> restrictors on them to slow them down. In Canada, it is
> probably sold as a scooter.
>
> For the Dellorto Carb tuning guide, go to
> http://www.ducatimeccanica.com/dellorto_guide/dellorto.html
>
> I will email you directly for the links to other carb
> tuning sites that I've found. I think the Dellorto one
> above is one of the best.--vh286.
>
> > Thank you very much for your advise. However I still
> don't
> > understand where this cut off restrictor pipe is. Is it
> ONE
> > the exhaust/muffler itself? Becuase I don't see any
> thing
> > cut off from it and there is only ONE main pipe that I
> bolt
> > onto the engine. Or is this restrictor something that's
> > under the engine on the scooter itself? Where should I
> look
> > for this?
> >
> > The website www.dellorto.com doesn't work. Is the name
> > correct?
> >
> > Please advise
> > thank you
> > Kendrick
> >
> > My email is kw_ap1@hotmail.com perhaps you can email me
> > directly. Thank you
> >
> > > Based on the speed you have gone so far, the
> restrictors
> > > have been removed. Check your exhaust for any kind of
> > leak.
> > > One of the restrictors was a piece of tubing that was
> > > blocked off on one end that was connected to the
> exhaust
> > > pipe right where the exhaust pipe bends out from under
> > the
> > > engine. It is removed by cutting it off and welding up
> > the
> > > hole. There might be a leak there if it isn't welded
> > > properly.
> > > The jets are located inside the carb. If your bike is
> > > stock, the jetting should be correct. How does the
> > engine
> > > idle? If you want to know what the inside of the carb
> > looks
> > > like and where the jets are located, log on to
> > > www.dellorto.com and click on Motorcycle Carburetors.
> > Look
> > > for the PHVA carb and click on that. There you will
> find
> > > the exploded view of the carb. The stock jets on the
> GP1
> > > are a #62 main, and #32 idle. For more info on
> jetting,
> > do
> > > a Web search on motorcycle carb tuning. There are a
> lot
> > of
> > > articles that detail the process. The only external
> carb
> > > adjustments are the idle speed, and air bleed
> > > screws.--vh286
> >
>
>
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