hi compressions

[Robert J. Harris]

Remember the Reichstag

----------
From: Mark Pitts <saxon at zymurgy.org>
To: diy_efi <diy_efi at coulomb.eng.ohio-state.edu>; 'Woodd, Michael'
<wooddm at akcity.govt.nz>
Subject: RE: Re: hi compressions
Date: Friday, September 20, 1996 2:32 AM

Problem comes, trying to work out the shims, so that both stems are working


Of Course you could get really crazy.   Remember the flathead ford V-8's,
They
had a really convoluted exhaust flow problem.  Valve in block, port bending

around the cylinder - all the way across the block and exiting thru a
siamesed
port on the center cylinders.  An air flow nightmare.

So some racers in the thirties and forties "two-cycled" it and made lots
more
power.  Involved cutting an exhaust port looking just like a two cycle
engines
around bottom dead center and running a separate exhaust pipe.  Opened 
around twenty five degrees before and after bottom dead certer.

At the end of the compression stroke - port opened and a significant chunk
of
exhaust left the engine. Exhaust stroke pumped some of the rest thru the 
stock exhaust   Yes, at the bottom of the intake - some charge went into
the
exhaust or some exhaust came back into the engine, but the vast improvement
in exhaust flow far made up the loss in intake efficiency.

---- Sniveling Tirade Follows - Cut Here ----------
No - was not invented at a university, nor were eurocentric book writers
really
interested in writing about colonial backyard mechanic's improvements in
crude production engines so you had to see it to remember it.  No, it was
not
tested on street engines, no it was not proctology examined to infinite
detail, yes
it was less than optium, no - nobody ever wrote much about it. but it
f____ng WORKED.   All I am trying to say is that there is a gold mine of
ancient 
history to be  examined for "new" ideas and what is considered "NEW" was
probably invented in the thirties and nearly perfected by the various air
forces.