BTW do you know anybody making RX8 exhaust flanges? I am thinking of
  getting a batch made up.

  Paul Lamar


  Racing Beat and Mazdatrix list the RX8 exhaust flanges, probably
  Mazdaspeed as well.
  Cheers
  Cary

  I found some headers but they won't work in tractors. No flanges for
  the block outlets however. Do you have the right links?

  Paul Lamar


 Some others - notice the part#'s are the same :) - there may be a stock
 mazda part as well N3H1-13-461B - don't know:
 http://www.mazdatrix.com/8exhaust.htm
 http://atkinsrotary.com/store/catalog/Exhaust-Flanges-title0-p-1-c-673.html
 http://www.racingbeat.com/resultset.asp?PartNumber=16169
 http://www.racingbeat.com/resultset.asp?PartNumber=16168
 ~C



 Paul, If you do an exhaust flange for  RX7 and one for RX8 shouldn't we be
using a CNC plasma cut 321 stainless flange. Also a slightly larger area
around te port would allow the stock double wall exhaust header to be used.

For a tractor installation after cutting off the cast iron flange and intake
port heating supply piece, turn the header upside down so that the outlet
faces the accessory end made possible by the equally spaced rectangular port
openings. I have not done this yet but plan on doing it by first adding
1-1/4" to the exhaust tube, then welding that assembly onto the flange and
finally adding a split extension to  the outer cover and welding that to the
flange. This is intended to add support to the exhaust connection and reduce
temperature stress during cooldown by slowing the cooling rate, hopefully
preventing exhaust cracks. Also I am just too cheap to throw away such a
nicely made stock part, and every one I have came with the header attached.

george grimes

Surprisingly you don't need SS for exhaust flanges. Mild steel works fine because they are so thick. I am building a tangential muffler so the stock RX8 exhaust manifold is of no use. The input to my tang RX8  SS muffler will be telescopic rectangular fabricated  tubing.

Paul Lamar