In a message dated 8/29/2004 3:54:57 PM Eastern Daylight Time, krnet-requ...@mylist.net writes: "cooling the turbo reduces its efficiency."
Orma Yes, you want to keep to turbo and the exhaust pipes hot as you will lose velocity in the moving exhaust gas as it cools. Remember hot air is big and will shrink as it cools (not the thing you want when using exhaust pressure spin a turbo) A trick it to use header wrap on the housing and pipes this will reduce the temps out side the wrap while keeping the exhaust gas hot. I have used this wrap many times in auto applications and it is amazing how much heat it reflects back in to the exhaust. On one Honda civic B16 conversion I did the header is 1/2 inch from the radiator fan and after wrapping the header you can touch it without burning your hand. Tip soak the wrap first before you wrap your pipes it conforms much better wet. Then hose clamp the ends and soak with hi temp paint and you will have a nice insulated pipe that will hold up to the elements better. "People who say it cannot be done should not interrupt those who are doing it." George Bernard Shaw, (1856-1950) Irish playwight and winner of the Nobel Prize for Literature 1925 Yours Bill White Alexandria VA