Steve Darby wrote:
>
> Chris Eaton wrote:
> >
> > Another add i read on the crossflow head said that you could do 11:1 with
> > 93 octane,and they actually tested this.For a daily driven car I wouldn't
> > go any higher than 9.5:1 myself.
> > Chris Eaton
> > '70 MGB Roadster
> >
> > ----------
> > > From: Scott Gardner <gardner@lwcomm.com>
> > > To: mgs@autox.team.net
> > > Subject: Octane requirements
> > > Date: Wednesday, May 14, 1997 6:44 PM
> > >
> > > Since we're on the subject, what is the highest compression ratio I
> > > could run on a freshly-rebuilt engine using 93 octane pump gas? My
> > > car never pings now, even when I do stupid things with the timing,
> > > and I usually alternate between 89 and 93 at the local Chevron.
> > > Moss's ad for the crossflow heads say that with flat-top
> > > pistons, you'll get 11:1 CR, but I don't know what kind of gas you'd
> > > need. I'm not interested in the Xflow head, because it seems like
> > > too much buck for not enough bang, after buying the head, manifold,
> > > and heater valve, not to mention the fact that I wouldn't want to
> > > cripple that head with my Weber 32/36 downdraft, but when an engine
> > > rebuild becomes necessary, I wouldn't mind going with one of the 2.0
> > > litre kits.
> > > I have a steady supply of 100 octane lo-lead at the
> > > squadron's fueling station, but would rather stick to 93 so I could
> > > actually go more than 125 miles from home without retarding the
> > > timing.
> > >
> > > Scott Gardner
> > > gardner@lwcomm.com
> > > www.lwcomm.com/~gardner
> Because the head flows in from the apposite side away from the exhaust
> nad the water jacket in the head in very large (keeps the temp low) you
> can raise the compression. It's like putting aa intercooler on a turbo,
> which cools the intake air thus making it possible to raise the boost
> from 7lbs to 10-14lbs.
> I have a "2.0 liter" engine with the head using Venolia flat top
> pistons. Comp 11.5:1. Use regular (86 octane) (i'm cheep) and am getting
> abuot 140HP with a 1000 RPM smooth idle.
> More about the head see http://www.pinon.com/sportscar
> Steve
I have the heads and manifolds at a far better prece then Moss or VB. I
am the manufacturer!!!
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