> > > What Metrakit bore do you have? Is it the SP, Pro Race,
> > or
> > > Hand Made? Did the bore seize up? Did your mechanic
> find
> > > anything else wrong like overheating, or lack of
> > > lubrication from the oil injection? Is the carb
> adjusted
> > > too lean? I'm asking all these questions because
> > Metrakit
> > > products are pretty good in quality, engine failure is
> > > usually due to other causes. I have the Polini
> Evolution
> > > bore in my GP1 and so far after about 6000 miles it
> > still
> > > runs strong.--vh286
> > >
> > >
> > > > I just received word from my mechanic at derbi in
> > miami
> > > > that I stuck my gp1. I have the metrakit big bore
> > kit.
> > > My
> > > > bike has about 4000 miles on it and only 2000 of
> those
> > > with
> > > > the bb kit. Has anyone heard of a gp1 sticking with
> > > such
> > > > low mileage? and also should I get a new metrakit
> big
> > > bore
> > > > kit or go for another manufacturer?
> > > > jeff.
> > >
> > > > I have a polini kit on my honda, the first kit
> lasted
> > 43,000 mi. of hard riding, you may want to change the
> gear
> > ratio if you tend to ride hard also use a quality
> synthetic
> > 2 stroke oil because it handles the heat better. Go with
> a
> > polini kit.
> >
> > I have the metrakit sp big bore kit. As far as
> lubrication that was not the problem, although I recently
> had a 21mm carb put on. It is possible that the carb
> needles weren't set up right. Anyways, I am having the
> engine rebuilt and will take it from there.....jeff.
>>>> Well the carb should have been put on with the bore kit, the oil pump should be set "full open" which gives a rich mix at idle, what center spring did he use? also clutch springs? and what gear ratio? these are just the basics your mechanic should know, and who was that guy that posted a 90 mph gp-1 well it can't be done with the parts you boys forgot to list...
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