polish inside of intake now? + black car injector update

[Bruce Plecan]

Was Bashful...

Changed the 40s to 55#ers on the GN.
Amazingly just changing the injector size, and SOTP, things are really nice.
Running at just 10 PSI now is thrilling.   Roads limited any use of WOT.

For the 40s to be right had to use 37ish.   The 55s are at 55.
Might change with scanning but for now close enough

MAFs, Turbos, and intake tracts can make a world of difference.

I shortened the intake tract pre turbo about 3" and the spooling is
noticeably better
For the new guys, I also relocated the MAF to right by the throttle body
(post intercooler)
Bruce
   87 Black Car



From: "Shannen Durphey" <Shannen at grolen.com>
> Well, unless you're running a '29 Chebby or a Briggs n Stratton, it's not
a
> bad thing to keep oil splash down in that area, too.
> Shannen
> Is that Doc snickering?
> Bruce Plecan wrote:

> > Crap
> > manifold not engine.
> > Hot oil off of the bottom of the intake manifold.
> > Arrgh.
> > Bruce
> >      I'll be quiet now
> >
> > > As far as heat goes, why not polish it externally, and the under
side?.
> > > By the way, I always run the lifter sheilds in the SBC to keep the oil
> > > splash of the bottom of the engine.
> > > Bruce
> > >
> > > > At 3:34 PM 1/30/01, Ross Corrigan wrote:
> > > > >I'll be swapping my carbed Vic. Jr. for my EFI Vic. Jr. setup
sometime
> > > here
> > > > >and think I know this answer but want to hear other perspectives on
> > > > >it.  Should I now be polishing the inside of my Vic. Jr. as best I
can
> > > with
> > > > >a dremel etc for maximum airflow as I no longer need turbulence to
keep
> > > > >fuel suspended correct?
> > > > >
> > > > >If so what's the most successful tools/methods for polishing the
> > innards
> > > of
> > > > >this intake....usually when I've seen polishing q's asked people
advise
> > > > >trying a smaller item first as most rarely finish what they start
in
> > this
> > > > >arena. I'm thinking I could take a 1/2 hour per day as my 'break'
> > during
> > > > >studies to progress on this item.  If it's only .5% gain or similar
I
> > > won't
> > > > >do it but if it's significant....''
> > > > Polish is OK with dry flow.
> > > > Main thing that polish affects (vs. just smooth)--is heat transfer.
It
> > > > reduces it significantly--both by reducing surface area and by
reducing
> > > > radiation (emmisivity and absorbtivity are both affected).
> > > > Work down through grit roll grit sizes and then Brasso on a felt bob
to
> > > get
> > > > a mirror finish.
> > > > Greg
 > > > >(motor is a roller 350, 4-440crankhp FWIW, edlebrock proflo 3500 to
be
> > > > >installed)
 > > > >thanks
> > > > >Ross Corrigan  /  Vancouver, Canada

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