[s-cars] Phenolic Intake Manifold Spacers

[Trevor Frank]

I wonder... typically a bid deal on a carbureted car, since you have
aluminum that is surrounding a liquid, gas, and you want the carb not to
get so hot as to vaporize the gas before it can be metered. Makes since
in this situation cuz the gas sit's in the floats for a long time, and
has roughly an order of magnitude the thermal conductivity of air.  A
little vibration dampening as well to aid in keeping the carb from
aerating the fuel.  I wonder if you can really insulate or even get any
advantage to trying to cool the intake manifold and the incoming air so
far down stream.  Seems there is little contact and very high speeds, so
there is little time to effect the air temp? And is there a benefit to
having some of the IM to help keep the head cool?  Wondering if the
plastic injector inserts are there for something similar, keeping the
injectors from getting heated? 

I doubt if this is what is keeping any of us from big hp numbers, Javad
seems not to be effected.  If they had real numbers I might be
interested, and the extra 3/8 of an in in the intake length....I wonder
if that is really going to make a measurable difference?

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Taka Mizutani
Sent: Monday, October 17, 2005 12:47 PM
To: Emre Washburn
Cc: Robert Myers; s-car-list at audifans.com
Subject: Re: [s-cars] Phenolic Intake Manifold Spacers

I can't say that this works on the Audi I-5, but phenolic spacers have
been
used for a very long time with the Chevy Gen I/II/III/IV small blocks,
the
Ford 302, 351W, 4.6 and other engines with great success.
 Taka

 On 10/17/05, Emre Washburn <yumyjager at gmail.com> wrote:
>
> //Skeptics,
>
> I don't think any hard facts have been posted about the 2.2l spacers,
> but the B5 S4 forum members on Audiworld.com <http://Audiworld.com>
rave
> about these spacers,
> and they are
> beginning to get gobs of power out of their motors these days.
> Admittedly, they would probably benefit more then we would with their
> IM being right above the center of two cylinder banks. But $100 and
> having a cooler IM, I think there is a benefit.
>
> Also, lengthening the IM tract a bit will also help with low-end grunt
a
> bit.
>
>
> --
> Emre
> 92 //S4
> 90 Cq
> 40 valves 'O plenty!
>
>
> On 10/17/05, Robert Myers <robert at s-cars.org> wrote:
> >
> > Any temperature measurements? How hot does the piece get? How much
> > thermal degradation should be expected at that temperature?
> >
> > At 12:44 PM 10/17/2005, James Murray (QA/EMC) wrote:
> >
> > >Just thought I'd cross post this for benifit of the S-Car list...
this
> was
> > >posted on Audi-doodi-World, a "Phenolic Intake Manifold Spacers"
was
> > >developed with help of a AW lister, looks interesting...
> > >
> > >http://forums.audiworld.com/s4s6/msgs/87854.phtml
> > >
> > >" ~10mm phenolic spacer kit, Audi 2.2T, Insulates intake manifold
from
> > >heat conduction through the heads, leading to lower intake air
temps
> > >-extends the intake runner lengths for better low end torque. Comes
> with
> > >all gasketing and bolts". $160 shipped
http://www.vastperformance.com/
> > >Maybe the price could be dropped for a group buy?
> > >/Jamu.
> > >
> > >
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