When Corky says for a turbo setup least exhaust is best, I think he means least restriction/mufflers etc with the ideal being close to no exhaust at all. Go for the 3".
Cheers, Chris > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On Behalf Of > Andrew Greenbury > Sent: Monday, 14 January 2002 10:28 AM > To: [EMAIL PROTECTED] > Subject: Re: Exhaust sizes (HELP) > > > Hi Daniel, > > hmmm that seems a bit contradictory because the larger diameter > should have lower exhaust gas velocities in an otherwise equivalent > system, so if the 2.5in doesnt exceed ~450 ft/sec, then the 3in > definitely wont, not the other way around... > > So I am unsure what he is getting at - I thought that generally the > benefits (lower pressure) of a larger dia system on a high > performance turbo outweighed the disadvantages (lower gas > velocity), within reason. > > Andrew > > > List, > > > > heres a question for all you switched on turbo boys. Following > > traditional lines for an exhaust, I was going to get a 3 inch > > system for my turbo project. However after reading "maximum > > boost" by corky bell, it seems that he reckons that for the > > approximate engine power output of my engine, I should use a 2.5 > > inch system. The book also states that for a turbo setup the > > least exhaust is the best? I'm very confused by now. Anyway back > > to the 2.5 inch set-up, this size comes from a few calculations to > > do with exhaust gas velocities. He recommends that the exhaust > > gases shouldn't exceed ~450 feet per second, and thus a 3 inch > > system would be capable of much more than that, so no good? There's > > a bit more in the book but at this stage I've just become totally > > confused. > > > > Eagerly awaiting some opinions.................. > > > > Daniel Kroehn > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
