RE: thoughts on breathing - long

["Patrick Bureau" <pbureau@home.com>]

Collin,

I have spent hours thinking what your mind is racing to digest

1) get the audi 5000 (non turbo) TB (See my link below to my tech now on
procedures)
<<http://www.longcoeur.com/scirocco/Technotes/throttlebody/index.html>>

2) I performed a surgery to teh airbox, step one was to remove the "flap"
and then run the air entry to teh forefront of the car for the freshest air
and cleanest air possible (I do a lot of highway normally and behind the air
dam just does not fit that comcept to me (dusts rises from that area of the
car) link below shows what I did.
<<http://www.longcoeur.com/scirocco/Technotes/Airentry/index.html>>

3) step two was to make 3 1.5" drill holes at the REAR front side of the
airbox (opposite from the front air entry) to stabilise the air flow into a
even flow instead of that single point suction area the intake make.


Result, cars runs nicely, always seems to have additional power on the
pedal, and quick respondness at the start line.
I am happy with the mods.

NOTE : I do not use K&N filter, as I always forget to clean them at teh
proper time slot, easier to change paperfilter every 3K when I do oil.

NOTE #2 : this setup will make your air filter somewhat dirtier (I use 3"
pipe from entry to airbox) but I don't care. I change teh filter more
frequently that most people do.

    ___  ___________
   /   |/_  __/ ___/  A Texan's Scirocco 1985 8v
  / /| | / /  \__ \   http://www.longcoeur.com/scirocco
 / ___ |/ /  ___/ /   (AIM) patricdlc, (ICQ) 32918816
/_/  |_/_/  /____/




-----Original Message-----
From: owner-scirocco-l@scirocco.org
[mailto:owner-scirocco-l@scirocco.org]On Behalf Of Colin
Sent: Wednesday, November 28, 2001 8:14 PM
To: scirocco-l@scirocco.org
Subject: thoughts on breathing - long


Hi,
     I've been thinking about how to improve my 8v breathing and I figured
I'd
better get opinions before I did something permanent and annoying.  There
are 2
basic problems to breathing on my stock CIS system and they each attach
directly to the air box/fuel distributor assembly.  The first is the teeny
little pipe that lets air in.  I removed the nasty little valve that was
there
and re-ran the hose directly from the box to the connection in the back of
the
air dam (yes, it stretched that far without difficulty and stays put).
I was thinking, though, that this needs to be improved upon.  My first
thought
was to 'swiss cheese' the box, but then I had a better idea.  If I were to
get
a 2 inch floor drain and cut an appropriate hole in the bottom of the box, I
could attach a second pipe and run it to the grill for a bit of a ram air
effect.  Done correctly and carefully, it should look quite neat and tidy.
I've also considered cutting off the hose connection originally there and
replacing it with a 3 inch bit of pipe.  Again, it should be simple to make
this look quite appropriate.  Any thoughts or comments?
     The second breathing problem I see needing addressed is the pipe that
joins the air box to the throttle body.  If you look closely, you'll notice
it's somewhat skinnier in the middle than on the ends.  I've seen a couple
advertised replacements for this and they all seem to be based on somewhat
flattened 3 inch piping with a 48 degree bend on one side to make it fit.
They
also seem to be based on copper pipe.  My thought was to use 3 inch abs
pipe.
Does anybody know if this stuff can be bent?  I would guess liberal use of a
propane torch would be helpful here, but I'm open to suggestions.  I think
staying with black abs would look most like the stock piece there now which
is
important when you're building a sleeper ;)  Besides, I don't have a pipe
bender that will take 3 inch copper and I don't like the idea of paying lots
of
cash for something I should be able to build myself for under $10.
     I see both those things as extremely simple and inexpensive things that
should improve the air flow into the system substantially.  My biggest
concern
is that opening up things that much might be more than a basic CIS system
can
stand.  I'd appreciate any comments on this.
     The whole point of this exercise is to make sure I have decent airflow
for
the bigger throttle body I'm going to try and get from the wrecker's this
week-end.  Any thoughts on which TB's I should be looking for?  I'm also
going
to try to get a spare intake manifold for my engine to do the carving on to
fit
the new throttle body.  Worst case, I go get another and try again if I
screw
it up.
     I appreciate any thoughts or comments (except on spelling or
grammar...;)).

Cheers,
Colin


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