Re: [DML] PRV6 Variations
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Re: [DML] PRV6 Variations



Bruce,

Thanks for the "very logical" explanation. I thought you might like to know
that the PRV-6 is a modified version of an earlier PRV-8. Don't ask me for
details though, I learned this years ago from a PRV publication that
disappeared some time ago.

"We're here to help you"

DMC Joe / De Lorean Services / <dmcjoe@xxxx>
Web Site: <www.deloreanservices.com>
.

----- Original Message -----
From: BRUCE BENSON <delornut@xxxx>
To: <dmcnews@xxxxxxxxxxx>
Sent: Sunday, June 25, 2000 6:29 PM
Subject: Re: [DML] PRV6 Variations


> Chris,
>
> I was a bit hasty in my response. If cost is no object, and the Venturi
was
> quite expensive considering it didn't look all that exotic, a crankshaft
> with a separate journal for each cylinder would make an even firing
engine.
> 99% of the worlds 90 degree V-6's are odd firing because of the
simplicity,
> cost , and reliability of making a crankshaft that has three journals with
> every two cylinders sharing one. Many modern V-6's now have their
cylinder
> banks at 60 degrees which makes an even firing engine when six cylinders
are
> involved. Many early V-6's were derived from 90 degree V-8's which are
even
> firing when cylinders share crank shaft journals. Lopping off two
cylinders
> makes the math come out different and the result is odd firing. My wife's
> Taurus SHO with a 60 degree V-8 is just the opposite. It was derived from
a
> 60 degree V-6 and it now is an odd firing engine with a balance shaft
> installed to smooth things out. That shaft rotates opposite of engine
> rotation and offsets any engine shake associated with the odd firing
> scenario. It's very smooth and pretty high in performance. A couple of
> months back I wrote a description of what odd firing actually is in the
> mailing list and that should be in the archives.
>
BRUCE BENSON







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