Just got this from Russ, we're on the way!!
Zak:
That sounds pretty good to me. The dump style pipe will be a lot
easier to build especially when there are several in a row to make.
A 'B' pipe with and without cat will be no problem. I had intended to
offer that option anyway (I don't run cats either). It is possible
that a resonator might be substituted for a converter. I''ll look
into it.
Stock location on the O2 is no problem.
The muffler I have my eye on is a DynoMax unit with 3 inch internal
passages. It will probably have to be modified to fit the car much
like the proposed unit for the Loyales. It is difficult to find a
reversing style muffler that has large internal passages that will
fit under a Subaru. The units that I have been looking into are RV
mufflers so they are fairly long. It is easier to find straight
through mufflers that are suitable but I realize not everyone wants
that kind of noise level all the time.
I am going to estimate the price of the downpipe to be $325. I have
not priced the material yet but this should be close. I estimate it
based on the pipe for the EA82T and an increase for the larger tubing
and elbows. However, this is not a price quote. You can estimate the
rest of the system based on pipe complexity and what you want
included. A non-resonated non-catalyst 'B' pipe would be fairly
inexpensive because there is little there. If you add a resonator you
pretty much add the cost of the unit; likewise with a catalyst. The
muffler depends on how much work will be required to modify a muffler
to fit the car. A straight through design would probably be cheaper
since I doubt there would be any meed to modify the muffler for use
in the system.
All of this will be done in aluminized mild steel with HP Coatings
exhaust coating applied to all pipes inside and out. Mufflers are
coated on the outside only (I belive). I am not sure about
converters. I think they coat the pipes up to the converter but leave
the converter itself alone even on the outside. Converter shells are
usually stainless due to the intense operating temperatures of the
converter.
Stainless steel is difficult to drill and grind. Since everything I
do is by hand I prefer to work in mild steel. Mild steel is perfectly
acceptable for exhaust applications especially when properly coated.
Stainless is fantastic but is expensive and can be prone to cracking.
The type 304 and 409 stainless steels that are commonly used for
exhaust are more resistant to this problem but it still exists. Mild
steel earned its reputation for corrosion in part due to the
tetraethyl lead in leaded gasoline that formed an acid in the exhaust
and literally ate the systems from the inside out (See 'How to Build
and Modify Intake and Exhaust Systems' by Ben Watson published by
Motorbooks International page 126 3rd paragraph under 'Materials').
Since unleaded fuel is the norm and has been for quite some time the
problem has been reduced.
Regards,
Russ
------------------------ ---------------------~-->
Buy Stock for $4
and no minimums.
FREE Money 2002.
http://us.click.yahoo.com/k6cvND/n97DAA ... /XoTolB/TM
---------------------------------------------------------------------~->
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com