It is amazing what is on the 'net, all you have to do is ask....
http://www.onthenet.com.au/~billzila/engineintro.htm#Inlet
Can't vouch for it's accuracy though...
Regards,
Nick
----- Original Message -----
From: Tom Richardson <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, September 10, 2000 10:31 PM
Subject: Re: Some SU questions
> Thanks for the ideas guys :)
>
> Anyone have any data on how the length of the trumpet affects the power
band
> ?
>
> ----- Original Message -----
> From: "Paddy Mcmillan" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Sunday, September 10, 2000 8:52 PM
> Subject: Re: Some SU questions
>
>
> >
> > g`day,
> > i made some trumpets for my webers from some PVC tubing, only cost
about
> > $1 for the set of 4, pretty good compared to the $25ea i was quoted for
> the
> > alloy ones. work great and made heaps of difference to performance,would
> be
> > just as easy to make for SU`s, got a pic here
> > http://www.geocities.com/paddy510/airhorns.jpg
> > Paddy
> >
> > >From: "Denzil Palmer" <[EMAIL PROTECTED]>
> > >Reply-To: [EMAIL PROTECTED]
> > >To: [EMAIL PROTECTED]
> > >Subject: Re: Some SU questions
> > >Date: Sun, 10 Sep 2000 20:52:18 +1200
> > >
> > >Actually I made functional trumpets out of the original pressed-metal
> > >intake
> > >horns in the original orange backing plate by just steel-brazing some
> thick
> > >welding wire around the outer edge and filing it smooth for a good
> radius.
> > >They worked, there was induction noise, I also used a K & N filter
> element
> > >in the original housing, and drilled some extra holes around the edge
of
> > >the
> > >housing.
> > >
> > >Cheap and very effective.
> > >
> > >----------
> > >From: "Tom Richardson" <[EMAIL PROTECTED]>
> > >To: <[EMAIL PROTECTED]>
> > >Subject: Re: Some SU questions
> > >Date: Sat, 9 Sep 2000 12:39 PM
> > >
> > >
> > >Thanks for the info Terry, I have found some trumpets that are pretty
> much
> > >the same length as the ones in that ghastly orange plate (probably safe
> to
> > >stick to for the time being I imagine), should get a nice induction
noise
> > >now too :o)
> > >
> > >BTW, How much should a pair of Webers in reasonable nick cost? What
> about
> > >an inlet manifold to suit? Cheaper than the current quote of $750 ea I
> > >hope!
> > >
> > >- Tom
> > >----- Original Message -----
> > >From: Terry & Heather <mailto:[EMAIL PROTECTED]>
> > >To: [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
> > >Sent: Saturday, September 09, 2000 1:39 AM
> > >Subject: RE: Some SU questions
> > >
> > >Tom,
> > >It is safe to vent the outlet from the rocker cover to atmo, by law you
> > >must
> > >fit a baffled filter which are available from most speed accessory
shops.
> > >
> > >Can't answer the second question re SU's as I don't use and don't like
em
> > >but for webers it makes a huge difference and I imagine that any side
> draft
> > >would benefit from tuning the intake to a varying degree. If you go
from
> a
> > >restrictive air cleaner to a more efficient one remember to re-tune
your
> > >mixtures as the immediate effect will be to run lean which is expensive
> if
> > >not corrected
> > >
> > >Terry
> > >-----Original Message-----
> > >From: [EMAIL PROTECTED]
> > >[mailto:[EMAIL PROTECTED]]On Behalf Of Tom
Richardson
> > >Sent: Friday, 8 September 2000 11:26 PM
> > >To: [EMAIL PROTECTED]
> > >Subject: Some SU questions
> > >
> > >Hi list
> > >
> > >I have an incredibly ugly air filter on my 1.5" SU's, and would like to
> > >replace it with some trumpets and tubular-shaped air filters. Sorry
for
> > >the
> > >been-answered-a-million-times-already questions....
> > >
> > >Is it safe to vent the outlet from the top of the rocker cover and the
> two
> > >outlets from the carbies to atmosphere? How does the length of an
intake
> > >trumpet affect the power of an L-series engine?
> > >
> > >Thanks :)
> > >
> > >- Tom
> > >
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