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IRA11Y Forums Junkie Club Member Location: sydney Registered: May 2002	Re: 4age head swap Sun, 13 February 2005 00:28 Quote: the 20v's also rev more than 16v's interesting statement... exactly what do you base this on? just curious because AFAIK the head is not the limiting factor in peak rpm on a 4AGE , its more to do with crank and stroke , now considering the stroke is still the same across the 4AGE range that leaves the crank. FA uses a 40mm main crank like a bigport and they generally rev @ 10000rpm or so. ecu rev cut is not an indication of an engines ability to rev, although the manufacturer sets the rev limit based on peak torque and longevity of the engine. generally a 20V will have the torque higher in the rev range but thats a factor of the flow of the head and cam profile not the ability to rev more. so what evidence do you have to support the theory? EDIT: forgot to add CR can be a factor too [Updated on: Sun, 13 February 2005 00:29] [Report message to a moderator]

	Subject	Poster	Date
	4age head swap	normo	Sat, 05 February 2005 10:33
	Re: 4age head swap	IRA11Y	Sat, 05 February 2005 10:35
	Re: 4age head swap	normo	Sat, 05 February 2005 10:44
	Re: 4age head swap	feral4mr2	Sat, 05 February 2005 12:28
	Re: 4age head swap	normo	Thu, 10 February 2005 08:13
	Re: 4age head swap	Flem	Sat, 12 February 2005 23:56
	Re: 4age head swap	4agte	Sun, 13 February 2005 00:05
	Re: 4age head swap	IRA11Y	Sun, 13 February 2005 00:28

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