Adam,
The valve springs and the grind of the cam determine the highest revs to be
used - usually. Other factors come into play but the former 2 items usually
determine the rev line. Beyond certain revs you get valve float. To bring up
the revs you have to install stonger springs.
It makes no sense to go much beyond the peak HP of the cam other than to
ensure that when you upshift you are into the "meat" of the cam on the next
gear with most trannies. That's why Datsun made mid ratio and close ratio
trannies - so that when you upshift you're still "on" the cam.
Mike
----- Original Message -----
From: "Adam Bradley" <ambradley@yahoo.com>
To: "Gary McCormick" <svgkm@halley.ca.essd.northgrum.com>;
<Robert.Long@CSDInc.com>
Cc: <datsun-roadsters@autox.team.net>
Sent: Tuesday, March 06, 2001 11:53 AM
Subject: Re: Stroked R16
> It seems the common choice for a stroked R16 is a slightly modified U20
> crankshaft - or is it the H20? Which begs the question, if it can do a
> certain RPM in the U20, can the crankshaft do the same RPM in an R16?
>
> That is, is the limiting factor of our engine RPM the stroke or
> something else?
>
> Adam
> '70 1600
>
> --- Gary McCormick <svgkm@halley.ca.essd.northgrum.com> wrote:
> > It's an R16 motor that has been assembled with a crankshaft that has
> > a longer stroke (I
> > can't remember the specific crank that is usually used) and, by
> > necessity, shorter
> > connecting rods, to increase displacement. Engine displacement =
> > Cylinder area x stroke
> > length, so increasing the stroke will increase the displacement.
> > There are tradeoffs,
> > though, as a longer stroke is going to limit, or at least reduce,
> > your maximum engine
> > speed.
> >
> > Gary McCormick
> > San Jose, CA
> >
> > Robert.Long@csdinc.com wrote:
> >
> > > Hello list,
> > >
> > > What does "Stroked R16" mean? How does that differ from my stock
> > 67.6 1600?
> > >
> > > Thanks,
> > > Robert
> > > 67.5 1600
> > > 83 280ZX
> > > Albuquerque
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