Paul,

Is the leaking throttle slide a permanent fixture ?  Or just for the
dyno ?

If it's to be the final, maybe back to the drawing board for a less
complicated installation,
i.e., with out the gaskets and pro-seal, etc.  Such as tilted at 45 so
the fuel runs into the
engine (yes I know about washing down the  surfaces with raw gas). And
then with a drain.

I remember some factory installations with a small (1/8) tube that
was at the lowest part of the intake to drain away raw gas when that
happened to them.

Of course what you have experienced does not happen on cars..........
And what are the chances that it will EVER happen again to this install ?
And if it did, when ?  Or why ?  There must be a simpler way..........

Kevin

Well I don't really know why it happened. We will know more
tomorrow when Tracy has a chance to look at it.
It is a very unlikely scenario as the switching transistors in Tracy
computer must be shorted or on for this to happen.
Usually switching transistors don't fail shorted.
They fail open most of the time. The wiring appears
to be correct.

Moving the slide throttle to 45 degrees is possible
and would help only slightly. It is preferable to
have the fuel go in the engine as that can be fixed
rather easily with a peripheral exhaust port. A side exhaust port
(RX8) is a little more difficult as you must pass a tube in through
the leading spark plug hole and suck the excess fuel from the bottom
of the rotor housing.

The gaskets are necessary as the slide throttle (ST) must be taken apart
to remove it from the engine. Unless of course you  put the rubber hose
connection on the other side of the ST next to the engine.
In that case the ST is further from the housing which is less desirable
for idle reasons.  I think the gaskets are an easy solution
and can replace the shims we are using now. Perhaps a bit of Hylomar
is also called for.

McMaster Carr page 3173 1/64" thick Handy Sheet Gasketing
450 F.  12" by 36 inch sheet $4.03 each. Mineral filled acrylic
nitrile binder good for fuels and oil. Max pressure is 5000 psi.

Paul Lamar

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