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eliotrw
Original Poster
174 posts
38 months
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Just wondering what the most powerful straight NA cylinder engine without any variable valve timing or vtec etc is.
I.e excluding the B16s sr16ve's and k20s out there.
Has to have been in a production car so no bttc ones and so on.
Off the top of my head i cant think of one more powerful than a
Xu10j4rs at 167hp. I did think the st170 engine first but i think that has vvt?
Any ideas all?
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jas xjr
7,413 posts
108 months
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Probably something out of a Porsche 944 or 968
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eliotrw
Original Poster
174 posts
38 months
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Good point. Although they are 3.0 or more right?
Change of rules. 2.0 or less
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Evoluzione
870 posts
112 months
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I think you need to break it down to bhp/litre, I don't know how big a Xu10j4rs is.
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Evoluzione
870 posts
112 months
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eliotrw
Original Poster
174 posts
38 months
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Yeah. No mods. As it was sold.
A XU10J4rs is a 2.0 so its 88.5hp per litre
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neiljohnson
8,577 posts
76 months
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jas xjr said: Probably something out of a Porsche 944 or 968 968 has vario cam 944 had an early form of vvt Lotus did the sport 160 which had fixed cam timing from an 1.8 k series
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stevieturbo
8,368 posts
116 months
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Mi16 or GTI6 equivalent etc ?
or some of the Vauxhall engines used in high spec Caterhams etc ?
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SammyW
626 posts
89 months
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K-series 1.8 VHPD 190? Or how about the 2.0 k-series in the Caterham R500 evo?
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davepoth
19,903 posts
68 months
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E30 BMW 320iS was a tax class special for Italy and Spain (there was a massive tax jump for cars over 2 litres). It was basically an E30 M3 with a 1990cc destroked engine, and made 189hp at 6900 rpm, or 94.97 bhp/litre.
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eliotrw
Original Poster
174 posts
38 months
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Oohhh yeah i remember that one dave.
I have a feelings thats going ro be a winner there.
Anyone else think of any more?
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stevieturbo
8,368 posts
116 months
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tr7v8
4,002 posts
97 months
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neiljohnson said: jas xjr said: Probably something out of a Porsche 944 or 968 968 has vario cam 944 had an early form of vvt Lotus did the sport 160 which had fixed cam timing from an 1.8 k series 944 was not variable cam timing & was 211BHP, 968 had vario cam & was 240BHP.
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eliotrw
Original Poster
174 posts
38 months
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Still mega displacement for a 4 pot though.
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eliotrw
Original Poster
174 posts
38 months
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stevieturbo said: The ford ones have varible cams  good should though. I think the destroked m3 is still the winner There must be more between the Zx dakar/xsara vts/306 gti6 XU10J4RS and the m3 engine though as theres a fair bit of power between them.
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neiljohnson
8,577 posts
76 months
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tr7v8 said: 944 was not variable cam timing & was 211BHP, 968 had vario cam & was 240BHP. The 944 varies the cam timing by adjusting the tension on the timing chain tensioner it's a primitive way of doing it but is variable
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SammyW
626 posts
89 months
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eliotrw said: The ford ones have varible cams good should though. I think the destroked m3 is still the winner There must be more between the Zx dakar/xsara vts/306 gti6 XU10J4RS and the m3 engine though as theres a fair bit of power between them. The destroked m3 engine is fairly impressive, but nothing conpared to the k-series engines in the 7. The R500 was making 230bhp from a 1.8, and the Evo version 250bhp from 2.0. Does the current Duratec R500 have vvt, as that makes 263bhp from 2 litres!
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SammyW
626 posts
89 months
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stevieturbo said: I think the Vauxhall engine in the 7 JPE was making 250bhp.
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one eyed mick
567 posts
30 months
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BMW sport bike 184 bhp 1000 cc enough? and road legal!!
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eliotrw
Original Poster
174 posts
38 months
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The duratecs in the 7 all have a form of vvt. Not sure anout the older engines though
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