<HTML><HEAD>
<META charset=UTF-8 http-equiv=Content-Type content="text/html; charset=utf-8">
<META content="MSHTML 6.00.2800.1170" name=GENERATOR></HEAD>
<BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: #ffffff">
<DIV>I've used the 5033K39 in "tunneled" (Typhoon) and "untunneled" (Hydeout) for several years. Headers are either AAP or CD (cut 0.4" from the circumference of a piece of 5/8 tubing for a 1/2" "bushing for the CD). Pipes are Hatori mounted at the inlet and outlet (stinger) on a 5/8 x 5/8 Lord mount. A piece of 3/4" ID silicone insulator (smaller at stinger) protects wire ties that fasten everything to "clips" on the Lords. I make the tubing a bit longer than most, around 8", </DIV>
<DIV> </DIV>
<DIV>The tunneled version lasts 200+ flights, the untunneled have not failed in over 500+ flights. Lord mounts will generally give up before the tubing.</DIV>
<DIV> </DIV>
<DIV>This tubing is on the ragged edge or its heat tolerance. If you find it necessary to run the engine for more than a couple of seconds at full throttle on the ground expect to replace the tubing often. This sort of operation can produce exhaust temps >150 deg above the rating of the tubing and will take it out fast. "Normal" part throttle flight operation is on the order of 50 deg less than the tubing is rated, plus there is good air flow to help.</DIV>
<DIV> </DIV>
<DIV>Earl</DIV></BODY></HTML>