<VV> Plug Secondaries (140hp only)?

[Rick & Janet Norris]

U got it!
Rick

> Thanks, Rick. A good response like this deserves to be posted.
>
> Joe Potts
>
> -----Original Message-----
> From: Rick & Janet Norris [mailto:rickjanet@charter.net]
> Sent: Wednesday, June 09, 2004 9:10 PM
> To: N. Joseph Potts
> Subject: Re: <VV> Plug Secondaries (140hp only)?
>
>
> Joe,
> At present I have the secondaries on my 69 Vert 140 engine blocked off
with
> an aluminum plate I made in the shape of a carb gasket. It is under the
carb
> so to the untrained eye it appears all four carbs work. The linkage is
> removed and the fuel lines are plugged. I did this because the secondaries
> have been a real pill to get right and the car just drives so much more
> pleasantly. I have not allotted the time to really work on it. I like to
> drive it every chance I get so it can wait until I damned good and ready
to
> futz with it. I don't pay any attention to the gas mileage so I can't
answer
> that question. As far as performance is concerned it runs better at low to
> medium speeds. Very good snap throttle response and smooth idle. I just
> cruise in it. If I want to go fast and scare the crap out of myself I have
a
> V8 Vair that does that quite well!
> The cooling makes no difference at all. It's the same with or without the
> secondaries. I'm running 52 jets. The heads have been treated to my
> painstakingly detailed de-flashing too!
>
> Rick Norris
>
>
> > OK - that was a nice thread about 140hp vs 150/180hp.
> >      Now, I've got a question that is a bit more realistic for a guy who
> has
> > a 140, but no other Corvair. This concerns secondary carburetors Yes/No.
> > This does NOT concern changing heads! Assume KEEPING the 140 heads and
> > blocking off the bases for the secondaries, perhaps changing the
> crossshaft
> > to a two-carb type.
> >      My own limited experience with running in this mode leads me to
> expect:
> >
> > * Performance as smooth as with 4 carbs (properly jetted/adjusted)
> > * SOME improvement in gas mileage (how much?)
> > * Presumably some reduction of performance (how much?)
> > * Possibly some impairment of cooling at the ends of the heads where the
> > secondaries were (?)
> >
> >      Anyone who has experience running his 140 on its primaries only is
> > requested to chime in with reports of experience, particularly anyone
who
> > has done so deliberately rather than as a matter of expedience
(secondarie
> s
> > not working, can't afford ANY reduction of gas mileage, etc.).
> >
> > Joe Potts
> > Miami, Florida USA
> > 1966 Corsa coupe 140hp with all 4 carbs running 4-speed with A/C