Dan's showing off some!

[greg.rocco at gmail.com (Greg Pallett)]

*eyes go all glassy* I'm thinking of the durocco, each motor turbo'd.....
look out pikes peak, you'd win it fer sher.

On 9/21/05, Anson Clement <ansonivan@yahoo.com> wrote:
> I'm sure Dan is better equipped to discuss this but
> I'll throw it out there anyway.
>
> There is a horrible tendancy in the FI world to equate
> boost pressure with performance ie more pressure is
> better. Of course the real aim is to move more air
> through our engines by whatever means necesary,
> someone pushing 15 lbs of boost on an un-ported head
> or ill sized turbo may very well make less power than
> someone pushing 10 lbs on a properly designed setup.
>
> More boost can mean more heat in the intake charge as
> well ... not good.
>
> Just imagine two garden hoses, one is straight and
> devoid of kinks, the other is all knotted up.
>
> Apply the same water pressure to each hose and
> obviously the straight hose will flow more, even when
> we apply more pressure to the kinked hose we may very
> well still flow more volume through the kinky-ass one.
>
> An over simplification for sure but you get the idea.
>
> Anson
>
> PS. Dan rocks my sox with his kickass build skills ...
> I need him around to make sure my goofy-ass projects
> get done right plus recieve forced induction.
>
> --- Dan Bubb <dan.bubb@gmail.com> wrote:
>
> > Take a look here:
> > http://www.pumaracing.co.uk/turbo.htm
> >
> > All I personally know is that this engine is way
> > better than the old
> > engine. Very responsive and wants to build boost
> > easily. But there
> > were way too many changes; different turbo, 5% more
> > displacement with
> > higher CR, and conversion to electronic injection,
> > plus the P & P, all
> > at one time to apportion the improvement. Mostly, I
> > think it's the
> > different turbo, but I wouldn't have spent two weeks
> > porting it if I
> > didn't think it was going to net some gain. I didn't
> > open out the port
> > sizes that much. If you run your finger around
> > inside a stock port you
> > can find lots of edges and discontinuities. Mostly I
> > took care of
> > those and cleaned up the area right around the valve
> > guide.
> >
> > Also, on this thread posted by Neal, if you look
> > down a ways, you'll
> > see a list of HP made by various people with
> > supercharged engines.
> >
> > http://forums.vwvortex.com/zerothread?id=1476793
> >
> > Seems to me that the guys with ported heads are
> > making more power and
> > generally with less boost.
> >
> > Me? I just like to pinch out every couple of HP that
> > I can ;^)
> > Dan
> >
> > On 9/21/05, Jeff Toomasson <area53@validpath.com>
> > wrote:
> > > Hey, Dan - this is purely out of curiousity - was
> > the head P&P'd before you
> > > undertook this particular build? The reason I ask
> > is that I was told by a local
> > > machine shop that a P&P won't really present a
> > significant gain under FI
> > > conditions. Has your experience been otherwise? At
> > least to me, it seems to
> > > make sense that at least a nice polish would help
> > and then even a porting would
> > > allow more airflow...but it's definitely a lot of
> > work and/or $$ that I would
> > > avoid if it doesn't help that much. I've been
> > debating this very thing on my
> > > turbo x-flow head ever since that guy told me
> > that...your thoughts?
> > >
> > > Your workmanship is looking good as always!
> > >
> > > JT
> > >
> >
> > _______________________________________________
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> > Scirocco-l@scirocco.org
> > http://neubayern.net/mailman/listinfo/scirocco-l
> >
>
>
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--
Aronsons First Law
People who do crazy things are not necessarily crazy