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DonE DonE is offline
Wo ist die Rennstrecke?
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Join Date: Mar 2004
Location: St Johns, FL
Posts: 1,211
Originally Posted by mb911 View Post
321 is a material that is superior to 304 it has been used for years in the avaition world in aircraft that don't get replacement mufflers for 20+ years
For turbo motors (like the TSIO 520), the 321 stainless pipes have to be inspected every year for cracks and holes. Pipes on our RAM C414 are replaced nearly every three years because of the same issues we deal with - high temps under pressure creating cracks. Under cruise conditions today (75% power), we ran 1520 degrees EGT. Our motors are 7.0:1 CR, 8.5L, twin plugged, 25 degrees timing, 20lbs boost, custom cams, CIS, air-cooled, 345 hp at 2700 rpm.

Last edited by DonE; 03-27-2008 at 05:14 PM..
Old 03-27-2008, 05:09 PM
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