I have heard of the P&G pump and wonder why it was not used on our
motorcycle last year? Instead we got to fill it with automatic transmission
fluid. On the next run we blew the head gasket in that cylinder. We tried
to "wash", "blow" and clean out all the ATF. I have heard this is common
(blowing head gasket on cylinder checked with ATF) any thoughts about this?
Regards, Tom
----- Original Message -----
From: "Jim Dincau" <jdincau@qnet.com>
To: "Chuck Rothfuss" <crothfuss@coastalnet.com>; <land-speed@autox.team.net>
Sent: Saturday, December 16, 2000 2:38 PM
Subject: Re: Rotarys
> Chuck
> The P&G "pump" is a transparent cylinder with a free piston in it. It
> is plumbed to a spark plug hole, the intake and exhaust valves are
disabled
> and the engine turned over with the starter. Air going in and out of the
> cylinder bumps an O ring to indicate maximum travel. Volume is directly
read
> by calibrations on the side of the cylinder. Several possibilities for
error
> exist, air temperature, piston and O-ring to wall friction in the
measuring
> cyl and rotational speed. Dan measures the cylinder temp and apples a
> correction factor but the other two are hard to keep constant. That is why
> for engines within 3% of the max or min they require direct measurement.
> Hope that was helpful.
> Jim in Palmdale who at any minute has to give up the computer to his
> granddaughter
>
> ----- Original Message -----
> From: Chuck Rothfuss <crothfuss@coastalnet.com>
> To: <land-speed@autox.team.net>
> Sent: Saturday, December 16, 2000 10:13 AM
> Subject: Re: Rotarys
>
>
> > Dave, List,
> >
> > I've offered to provide pieces to be measured by ECTA officials, and
> have
> > explained repeatedly the futility, as Dave mentioned, of trying to alter
> the
> > factory dimensions. (making an expensive tear-down to measure one of my
> > engines unnecessary) All seems to rest with the SCTA rules commitee, as
> the
> > ECTA rules mirror what is established by the senior organization.
> >
> > I'm not familiar enough with the P&G ("pumping") equipment, that is
now
> > apparently available on both coasts, to understand how testing is
> conducted.
> > Can someone shed some light on this, and the potential use of such
> equipment
> > on a rotary? Since we are comparing the breathing capability of engines
> > this certainly seems like a fair way to compare them.
> >
> > As a non-engineer I figure out most things by simply fumbling around
> and
> > experimenting with things til I get it right. (I call it "FUN") If I
have
> > to run down someone with "pumping" equipment and "pump" one of my nice
> tight
> > 13B's I'd be happy to do that.
> >
> > Chuck Rothfuss
> > ECTA
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