polish inside of intake now? + black car injector update

[John Dammeyer]

Post a picture somewhere!

John


----- Original Message -----
From: "Bruce Plecan" <nacelp at bright.net>
To: <diy_efi at diy-efi.org>; <gmecm at diy-efi.org>
Sent: Wednesday, January 31, 2001 2:56 PM
Subject: polish inside of intake now? + black car injector update


>
> 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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