Mike...

 What does Boston Bob say?  He must have some idea of what's going on, eh?

 Mick
Hilo, Hawaii

> ----- Original Message -----
> From: Mike Finkbiner <mike_l_f@hotmail.com>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Tuesday, May 15, 2001 7:03 PM
> Subject: New Engine, Poor Power, Low Gas Mileage - Update
>
>
> > I haven't put many more miles on my new Boston Bob engine, although now
I
> > can track it with the odometer working again, but I finally got into the
> > shop to have the emissions tested.
> >
> > To re-cap, I have about 1200 miles on a new 2.1l engine with a longer
> > duration cam and ported and polished heads.  The gas mileage has been
> about
> > 15-16, power off the line is poor, and it surges rythmically at times.
> >
> > My digitool readings look normal.  The one problem we have found is the
> fuel
> > pressure regulator is running about 4 psi high.
> >
> > I had a local shop run the vehicle emissions tests, assuming that if the
> > fuel pressure regulator were the problem we would see it there.  Here's
> the
> > results -
> >
> > RPM  Idle     1800      2800
> >
> > HC     1398     299      140
> > CO     1.51     0.94     0.66
> > CO2    8.86     12.7     13.8
> >
> > According to the mechanic, that looks pretty good.  He doesn't see any
> need
> > for adjustments to the AFM idle mixture screw.  The one thing he thought
> was
> > high was the Idle HC, and a longer duration cam could explain it.
> >
> > Not sure what to do next.  We will probably check the valve adjustments,
> and
> > have discussed replacing the Temp II just because it's cheap, but with
the
> > digitool readings looking good, I'm not sure.  I sort of hate to just
> throw
> > parts at it.  Do you suppose the pressure regulator could be a problem,
> but
> > it isn't showing up in high CO?
> >
> > Mike Finkbiner
> > '87 Westy
> > Moscow, Idaho
> > _________________________________________________________________
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>