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lang Forums Junkie Location: Adelaide Registered: June 2003	Re: How do you figure out redline? Sun, 09 November 2003 12:20 ed_ma61 wrote on Sun, 09 November 2003 21:39 rev until the engine stops making power?? ahhh, so if i push nos through my 5me, and its still making power at 9000rpm, this is ok???? redline is based on the mechanical and harmonic tolerances of the engine, not on its power characteristics. if i wanted to, i could fiddle the cam timing on my 7m to make 15hp extra at 200rpm past present redline, but i chose not to... why? cause the engine cant take it! piston velocities go through the roof, rod and crank forces the same, valves start to float etc etc redline is what the manufcturer says, not what you 'think' ... unless you have a damn good resaon based on modifications to bottom end and valve train... i know its a bit different but im trying to make a point... 13b's are safe till around 9500 where destructive harmonics start to set in. so how do you explain the 7000rpm redline, thats 2500 lower than where its still meant to be safe. the difficult bit is getting it to spin that fast, ie porting, supplying enough fuel ect. but im pretty sure that a safe redline would be once peak power starts to drop off is its set up properly [Report message to a moderator]

	Subject	Poster	Date
	How do you figure out redline?	mtsbirch	Sun, 09 November 2003 07:32
	Re: How do you figure out redline?	lang	Sun, 09 November 2003 07:48
	Re: How do you figure out redline?	draven	Sun, 09 November 2003 09:45
	Re: How do you figure out redline?	mrshin	Sun, 09 November 2003 09:56
	Re: How do you figure out redline?	ed_ma61	Sun, 09 November 2003 10:39
	Re: How do you figure out redline?	gianttomato	Sun, 09 November 2003 11:01
	Re: How do you figure out redline?	oldcorollas	Sun, 09 November 2003 14:49
	Re: How do you figure out redline?	gianttomato	Mon, 10 November 2003 00:31
	Re: How do you figure out redline?	lang	Mon, 10 November 2003 03:20
	Re: How do you figure out redline?	lang	Sun, 09 November 2003 12:20
	Re: How do you figure out redline?	Simon-AE86	Sun, 09 November 2003 23:14
	Re: How do you figure out redline?	Intensevil	Sun, 09 November 2003 10:58
	Re: How do you figure out redline?	truenosedan	Sun, 09 November 2003 11:04
	Re: How do you figure out redline?	Norbie	Sun, 09 November 2003 12:34
	Re: How do you figure out redline?	mtsbirch	Sun, 09 November 2003 16:57
	Re: How do you figure out redline?	mrshin	Sun, 09 November 2003 22:49
	Re: How do you figure out redline?	lang	Mon, 10 November 2003 00:12
	Re: How do you figure out redline?	coronamark2	Mon, 10 November 2003 00:48
	Re: How do you figure out redline?	gianttomato	Mon, 10 November 2003 02:45
	Re: How do you figure out redline?	coronamark2	Mon, 10 November 2003 04:02

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