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Author	Topic
nick.parker Regular Location: Perth Registered: January 2005	Re: What is a 'Group A' 4AGE ? Mon, 12 December 2005 13:01 Hi, I had a look at this 'groupA' cylinder head (small port) today. Apart from lots of porting and polished combustion chambers, and machining so high lift cams lobes would clear the head. The valves as measured by my vernier calipers (at largest diameter) were inlet approx 30.6mm, outlet approx 25.6mm. So it looks like this head has 1mm oversize inlet valves and stock exhaust valves. The question is will this be of greater benefit to my AW11 than a bigport head or is a $300 20 valve head the ticket. I am forcing air in either head with an SC14 @ 18psi! See my website (in signature) for info / video. Cheers, Nick [Updated on: Mon, 12 December 2005 13:07] [Report message to a moderator]

	Subject	Poster	Date
	What is a 'Group A' 4AGE ?	nick.parker	Fri, 09 December 2005 05:36
	Re: What is a 'Group A' 4AGE ?	Corona RT142	Fri, 09 December 2005 05:41
	Re: What is a 'Group A' 4AGE ?	nick.parker	Fri, 09 December 2005 06:10
	Re: What is a 'Group A' 4AGE ?	Hunty	Fri, 09 December 2005 06:10
	Re: What is a 'Group A' 4AGE ?	Corona RT142	Fri, 09 December 2005 06:29
	Re: What is a 'Group A' 4AGE ?	mrshin	Fri, 09 December 2005 06:10
	Re: What is a 'Group A' 4AGE ?	domasik	Sat, 10 December 2005 09:22
	Re: What is a 'Group A' 4AGE ?	Stretch	Fri, 09 December 2005 06:10
	Re: What is a 'Group A' 4AGE ?	exquisit	Fri, 09 December 2005 21:20
	Re: What is a 'Group A' 4AGE ?	shinybluesteel	Fri, 09 December 2005 21:58
	Re: What is a 'Group A' 4AGE ?	mrshin	Fri, 09 December 2005 22:40
	Re: What is a 'Group A' 4AGE ?	mrshin	Sat, 10 December 2005 10:34
	Re: What is a 'Group A' 4AGE ?	Jonny2TG	Sat, 10 December 2005 23:33
	Re: What is a 'Group A' 4AGE ?	Stretch	Sun, 11 December 2005 00:58
	Re: What is a 'Group A' 4AGE ?	Jonny2TG	Sat, 10 December 2005 23:40
	Re: What is a 'Group A' 4AGE ?	Jonny2TG	Sun, 11 December 2005 00:07
	Re: What is a 'Group A' 4AGE ?	Jonny2TG	Sun, 11 December 2005 00:18
	Re: What is a 'Group A' 4AGE ?	Jonny2TG	Sun, 11 December 2005 00:38
	Re: What is a 'Group A' 4AGE ?	Jonny2TG	Sun, 11 December 2005 01:49
	Re: What is a 'Group A' 4AGE ?	nick.parker	Mon, 12 December 2005 13:01
	Re: What is a 'Group A' 4AGE ?	170bhp	Tue, 13 December 2005 00:23

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