Intake Diameter

"David Algie" <aca.RemoveThis@iquest.net> wrote in message news:<c8f0l7$2c9v$1@news.iquest.net>...
 > In general, the bigger the better, avoid K&N crap, you will get bore and
 > valve seat wear over time, and kep it away from the heat as much as
 > possible.

I ran a K&N on my old car and had no problems with valve/seat wear?
What would you recommend preference to the OEM low flow filter then?

James<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Intake Diameter 

Where is it shown that using a K&N filter will result in bore and valve seat
wear?

I've used them for years and have never noticed abnormal wear. I've pulled
down a few engines.
On one engine, I had about 80k using a K&N and the bore was still standard.
The only reason the head came off was to replace a broken exhaust manifold
stud.

Rich
"David Algie" <aca RemoveThis @iquest.net> wrote in message
news:c8f0l7$2c9v$1@news.iquest.net...
 > In general, the bigger the better, avoid K&N crap, you will get bore and
 > valve seat wear over time, and kep it away from the heat as much as
 > possible.
 >
 > --
 > David Algie
 > Algie Composite Aircraft
<font color=purple> > <a style='text-decoration: underline;' href="http://members.iquest.net/~aca/</font" target="_blank">http://members.iquest.net/~aca/</font</a>>
 >
<font color=purple> > <a style='text-decoration: underline;' href="http://groups.yahoo.com/group/algiecompositeaircraft/</font" target="_blank">http://groups.yahoo.com/group/algiecompositeaircraft/</font</a>>
 > "James Buckle" <j.buckle RemoveThis @btinternet.com> wrote in message
 > news:c8e0kh$pu$1@sparta.btinternet.com...
  > > Hi all,
  > > I've got a celica GTfour (alltrac) 2ltr turbo, dragging its ass to
 > somewhere
  > > in the region of 225bhp running 12psi. Problem is it is time for an air
  > > filter change but im not sure which way to go. Stock filter panel, K&N
  > > replacement panel (direct fit) or seal up the stock filter box, find the
  > > end of the hose where it pokes out under the wing behind some panelling
 > and
  > > remove the resonator and whap a cone type filter on there?
  > >
  > > Few thoughts -
  > > The turbo inlet is either 70 or 80mm diam.
  > > The stock air filter panel is 55sq inches and the pipe to the AFM is
  > > 80mm-ish. Only then on the opposite side of the filter box all the
piping
  > > is 50mm diameter. Surely this is a restriction that shouldnt be there?
If
 > I
  > > remove it i have to move batteries and re-route cabling etc so I was
just
  > > wondering whether there was a way of determining intake tubing diam
  > > minimums for certain sizes of turbocharged engines? I just wonder how
 > 2inch
  > > tubing can flow enough air for a 6500rpm 12psi boost engine.
  > >
  > > Thoughts? I've scanned all the articles ive found on the web so far, I'd
  > > love to get the intake more noisy - ran for 100 yards with the filter
out
  > > and the turbo sounds amazing on boost and silent off boost - perfect.
  > >
  > > James
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Intake Diameter 

I work on race cars for a living, when we would run a K&N on a Toyota
Alantic engine, the leakdown after 500 miles was always higher and there was
noticable grit on the carburettor throats. With an oiled foam filter, the
leakdown would get BETTER after 500 miles (less). A dissasembled 944 Porsche
engine, this has a high silicon aluminium bore, has far more damage due to
grit than one with a stock filter has. In general, the K&N flows better
because it has large mesh sizes compared to paper, but you pay the price
over the long run.

--
David Algie
Algie Composite Aircraft
<a style='text-decoration: underline;' href="http://members.iquest.net/~aca/" target="_blank">http://members.iquest.net/~aca/</a>

<a style='text-decoration: underline;' href="http://groups.yahoo.com/group/algiecompositeaircraft/" target="_blank">http://groups.yahoo.com/group/algiecompositeaircraft/</a>
"Richie Rich" <Somewhere RemoveThis @USA.net> wrote in message
news:10amu5mjkn8rh86@corp.supernews.com...
 > Where is it shown that using a K&N filter will result in bore and valve
seat
 > wear?
 >
 > I've used them for years and have never noticed abnormal wear. I've
pulled
 > down a few engines.
 > On one engine, I had about 80k using a K&N and the bore was still
standard.
 > The only reason the head came off was to replace a broken exhaust manifold
 > stud.
 >
 > Rich
 > "David Algie" <aca RemoveThis @iquest.net> wrote in message
 > news:c8f0l7$2c9v$1@news.iquest.net...
  > > In general, the bigger the better, avoid K&N crap, you will get bore and
  > > valve seat wear over time, and kep it away from the heat as much as
  > > possible.
  > >
  > > --
  > > David Algie
  > > Algie Composite Aircraft
<font color=green>  > > <a style='text-decoration: underline;' href="http://members.iquest.net/~aca/</font" target="_blank">http://members.iquest.net/~aca/</font</a>>
  > >
<font color=green>  > > <a style='text-decoration: underline;' href="http://groups.yahoo.com/group/algiecompositeaircraft/</font" target="_blank">http://groups.yahoo.com/group/algiecompositeaircraft/</font</a>>
  > > "James Buckle" <j.buckle RemoveThis @btinternet.com> wrote in message
  > > news:c8e0kh$pu$1@sparta.btinternet.com...
   > > > Hi all,
   > > > I've got a celica GTfour (alltrac) 2ltr turbo, dragging its ass to
  > > somewhere
   > > > in the region of 225bhp running 12psi. Problem is it is time for an
air
   > > > filter change but im not sure which way to go. Stock filter panel, K&N
   > > > replacement panel (direct fit) or seal up the stock filter box, find
the
   > > > end of the hose where it pokes out under the wing behind some
panelling
  > > and
   > > > remove the resonator and whap a cone type filter on there?
   > > >
   > > > Few thoughts -
   > > > The turbo inlet is either 70 or 80mm diam.
   > > > The stock air filter panel is 55sq inches and the pipe to the AFM is
   > > > 80mm-ish. Only then on the opposite side of the filter box all the
 > piping
   > > > is 50mm diameter. Surely this is a restriction that shouldnt be there?
 > If
  > > I
   > > > remove it i have to move batteries and re-route cabling etc so I was
 > just
   > > > wondering whether there was a way of determining intake tubing diam
   > > > minimums for certain sizes of turbocharged engines? I just wonder how
  > > 2inch
   > > > tubing can flow enough air for a 6500rpm 12psi boost engine.
   > > >
   > > > Thoughts? I've scanned all the articles ive found on the web so far,
I'd
   > > > love to get the intake more noisy - ran for 100 yards with the filter
 > out
   > > > and the turbo sounds amazing on boost and silent off boost - perfect.
   > > >
   > > > James
  > >
  > >
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Intake Diameter 

So would you suggest a filter such as a RAMAIR oiled foam as better than
stock?? They quote better filtration and dust retention than any other make,
and though they dont quote for flow, it cant be too bad?

J
"David Algie" <aca DeleteThis @iquest.net> wrote in message
news:c8gnrg$2sdb$1@news.iquest.net...
 > I work on race cars for a living, when we would run a K&N on a Toyota
 > Alantic engine, the leakdown after 500 miles was always higher and there
was
 > noticable grit on the carburettor throats. With an oiled foam filter, the
 > leakdown would get BETTER after 500 miles (less). A dissasembled 944
Porsche
 > engine, this has a high silicon aluminium bore, has far more damage due to
 > grit than one with a stock filter has. In general, the K&N flows better
 > because it has large mesh sizes compared to paper, but you pay the price
 > over the long run.
 >
 > --
 > David Algie
 > Algie Composite Aircraft
<font color=purple> > <a style='text-decoration: underline;' href="http://members.iquest.net/~aca/</font" target="_blank">http://members.iquest.net/~aca/</font</a>>
 >
<font color=purple> > <a style='text-decoration: underline;' href="http://groups.yahoo.com/group/algiecompositeaircraft/</font" target="_blank">http://groups.yahoo.com/group/algiecompositeaircraft/</font</a>>
 > "Richie Rich" <Somewhere DeleteThis @USA.net> wrote in message
 > news:10amu5mjkn8rh86@corp.supernews.com...
  > > Where is it shown that using a K&N filter will result in bore and valve
 > seat
  > > wear?
  > >
  > > I've used them for years and have never noticed abnormal wear. I've
 > pulled
  > > down a few engines.
  > > On one engine, I had about 80k using a K&N and the bore was still
 > standard.
  > > The only reason the head came off was to replace a broken exhaust
manifold
  > > stud.
  > >
  > > Rich
  > > "David Algie" <aca DeleteThis @iquest.net> wrote in message
  > > news:c8f0l7$2c9v$1@news.iquest.net...
   > > > In general, the bigger the better, avoid K&N crap, you will get bore
and
   > > > valve seat wear over time, and kep it away from the heat as much as
   > > > possible.
   > > >
   > > > --
   > > > David Algie
   > > > Algie Composite Aircraft
<font color=brown>   > > > <a style='text-decoration: underline;' href="http://members.iquest.net/~aca/</font" target="_blank">http://members.iquest.net/~aca/</font</a>>
   > > >
<font color=brown>   > > > <a style='text-decoration: underline;' href="http://groups.yahoo.com/group/algiecompositeaircraft/</font" target="_blank">http://groups.yahoo.com/group/algiecompositeaircraft/</font</a>>
   > > > "James Buckle" <j.buckle DeleteThis @btinternet.com> wrote in message
   > > > news:c8e0kh$pu$1@sparta.btinternet.com...
   > > > > Hi all,
   > > > > I've got a celica GTfour (alltrac) 2ltr turbo, dragging its ass to
   > > > somewhere
   > > > > in the region of 225bhp running 12psi. Problem is it is time for an
 > air
   > > > > filter change but im not sure which way to go. Stock filter panel,
K&N
   > > > > replacement panel (direct fit) or seal up the stock filter box, find
 > the
   > > > > end of the hose where it pokes out under the wing behind some
 > panelling
   > > > and
   > > > > remove the resonator and whap a cone type filter on there?
   > > > >
   > > > > Few thoughts -
   > > > > The turbo inlet is either 70 or 80mm diam.
   > > > > The stock air filter panel is 55sq inches and the pipe to the AFM is
   > > > > 80mm-ish. Only then on the opposite side of the filter box all the
  > > piping
   > > > > is 50mm diameter. Surely this is a restriction that shouldnt be
there?
  > > If
   > > > I
   > > > > remove it i have to move batteries and re-route cabling etc so I was
  > > just
   > > > > wondering whether there was a way of determining intake tubing diam
   > > > > minimums for certain sizes of turbocharged engines? I just wonder
how
   > > > 2inch
   > > > > tubing can flow enough air for a 6500rpm 12psi boost engine.
   > > > >
   > > > > Thoughts? I've scanned all the articles ive found on the web so far,
 > I'd
   > > > > love to get the intake more noisy - ran for 100 yards with the
filter
  > > out
   > > > > and the turbo sounds amazing on boost and silent off boost -
perfect.
   > > > >
   > > > > James
   > > >
   > > >
  > >
  > >
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Intake Diameter