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Old 11-21-2008, 09:12 PM   #229 (permalink)
trebuchet03
MechE
 
Join Date: Dec 2007
Location: Bay Area
Posts: 1,151

The Miata - '01 Mazda MX-5 Miata
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Quote:
Originally Posted by whitevette View Post
"...the combustion event to reach completion" at or near TDC ? Shazam! Not in my engine, please. Cranks break, you know. Rods bend. ARGH ! F. salesmen aren't the only ones making up science! -whitevette
o.0 You do realize that ignition happens just slightly before TDC right? At the rates pistons are traveling, a few milliseconds is critical - like the few milliseconds it takes for the event to complete. Ignite early so max pressure is at TDC or as close to as possible (just not before). That would apply unless you've retarded your timing somewhere below 0 degrees - yikes, would that run with no guts....
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