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quest Regular Location: u.s.a. south Registered: April 2004	Re: 1JZ/ Skyline Fri, 24 December 2004 12:49 Davey, I believe that 10.2s mk3 uses a 2jz bottom end. Orins car, eh. I've seen him post details about it right here on this forum in the '1.5jz' thread. No surprises there since we all know what a 3L j is capable of. I know and seen 1jz swapped u.s. mk3s run with big singles and never come close to 10s. Why folks replace their 3L with a 2.5L in such a heavy hull, is beyond me. Its very uncommon for fellow enthusiasts to not share their combination with anyone, unless they are in some kinda competition - like 'shop cars' etc.... but you do have a few shady or stingy characters. 1j180, Do you have a 1j in your 180? There was a nice 1j/s13 shown on u.s. freshalloy forum. He ran 11.8s, so I don't see whats so suspect about a 25 running 10s with a big single and standalone.... but if you're convinced that the "Rb25 is an average engine at best", I can understand the skepticism. Remember that the majority of u.s. turbo cars run hi boost, slicks or ET streets and race gas for their strip assaults, and will usually dyno for both street (pump gas/drag radials) and track configuration. Another 'minor' detail folks overlook is gearing, once you've increased torque. Iirc these 25 swaps ran the j30 3.7 diff. The ij/s13 guy posted seeking a 3.5:1 or so, dunno if he ever got it. Many folks subscibe to the misconception that you need shorter gearing to go fast. Wrong. Would the 25 last on a circuit? Probably not, but I've never seen one use a swapped inline 6 for such a purpose. Not a good choice imo. These 25s aren't freaks. You just seen what happens when guys copy and paste a proven formula to a 25. Yes the pistons not up to par with the 1j, but nevertheless, folks have sucess with it and ran the numbers to prove it. One did damage his pistons at over 600hp tho. He was "unfamiliar with the 25, and wouldn't have got so aggressive with the timing (microtech) if he had known about the compression/piston issue". They're what... 9.XX:1? Tuner was chasing bigger numbers just for the hell of it, so I wouldn't blame the 25. Goal was to build an exceptionally fast street car - the 25 surpassed it by a good much, eh. I'd choose a 7m or 2j over either. Seen remarkable results even from boosted GEs. [Report message to a moderator]

	Subject	Poster	Date
	1JZ/ Skyline	Aging Hoon	Sat, 18 December 2004 08:57
	Re: 1JZ/ Skyline	boxh34d	Sat, 18 December 2004 09:12
	Re: 1JZ/ Skyline	wastegate	Sat, 18 December 2004 09:46
	Re: 1JZ/ Skyline	mrshin	Sat, 18 December 2004 10:55
	Re: 1JZ/ Skyline	HighRolla	Sun, 19 December 2004 03:48
	Re: 1JZ/ Skyline	Chris Davey	Sun, 19 December 2004 05:07
	Re: 1JZ/ Skyline	Aust162	Sun, 19 December 2004 07:07
	Re: 1JZ/ Skyline	draven	Sun, 19 December 2004 07:58
	Re: 1JZ/ Skyline	stark	Sun, 19 December 2004 09:53
	Re: 1JZ/ Skyline	HighRolla	Sun, 19 December 2004 12:03
	Re: 1JZ/ Skyline	Nisota	Mon, 20 December 2004 04:49
	Re: 1JZ/ Skyline	Supra Saiyan	Tue, 21 December 2004 08:47
	Re: 1JZ/ Skyline	mrshin	Sun, 19 December 2004 12:04
	Re: 1JZ/ Skyline	Silver_r33	Mon, 20 December 2004 06:36
	Re: 1JZ/ Skyline	1j180	Tue, 21 December 2004 08:34
	Re: 1JZ/ Skyline	stark	Tue, 21 December 2004 08:49
	Re: 1JZ/ Skyline	Chris Davey	Tue, 21 December 2004 09:11
	Re: 1JZ/ Skyline	1j180	Tue, 21 December 2004 09:23
	Re: 1JZ/ Skyline	KOFFEE-BLACK	Tue, 21 December 2004 09:29
	Re: 1JZ/ Skyline	quest	Thu, 23 December 2004 18:25
	Re: 1JZ/ Skyline	Chris Davey	Fri, 24 December 2004 02:11
	Re: 1JZ/ Skyline	1j180	Fri, 24 December 2004 02:33
	Re: 1JZ/ Skyline	quest	Fri, 24 December 2004 12:49
	Re: 1JZ/ Skyline	djeXo	Fri, 24 December 2004 01:55
	Re: 1JZ/ Skyline	Eagz	Fri, 24 December 2004 12:26

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