flowbench

bcroe at juno.com bcroe at juno.com
Thu Feb 7 08:32:30 GMT 2002


I have seen one of those V8 to 4 + 4 air compressor 
conversions, a very long time ago.  I think it was a 
flat head engine.  What I remember was the 
conversion was not by bank, the cylinders were 
mixed.  Air compressors use flapper valves, not 
cam operated.

I think you would need the highest "compression"
pistons you could find to keep the efficiency up.

Bruce Roe

On Wed, 6 Feb 2002 19:59:14 -0000 "marko.cosic"
<marko.cosic at ntlworld.com> writes:


> Now, more seriously here, I have heard of a conversion
> where one bank of a V-8 is used as an air compressor.
> The spark plug wires are disconnected, the intake
> manifold gets sliced and blocked, etc.
> 
> >Ideally a V8 with a flat-plane (4-cyl inline like) crank, so you've 
> effectively
> two 4-cyl engines joined together in an efficient manner. Say it was 
> a 250bhp
> engine to start with, then (in simpleton terms) you'd have 125bhp 
> drive and
> enough airflow for 125bhp. Now so long as each inlet port on your 
> tested head
> isn't feeding more than 125bhp, you've plenty of air. (preparing to 
> ahve this
> overly-simple theory taken apart) A simple actuator on the throttle 
> linked to a
> MAP sensor in the driven bank's exhaust manifold could maintain your 
> 25" H20, or
> even a relief valve set to 25" H20 screwed into the manifold.

> > Marko

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