There is no dispute (over power)

Fred /
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If you limit this discussion just to "which makes the most horsepower" without supercharging in any form...

Then there is no dispute over which makes more power.

For a given displacement... a 2 stroke will always make more HP than a 4 stroke.

Even with good useable mid range and even adequate low end.

Example >>...Dirtbikes.. A 'latest generation" 250cc 2 stroke makes 45 to 50 RWHP.

............................The latest 250cc 4 stroke makes 32 RWHP

...................... Which is almost identical to the latest 125cc 2 strokes

................. (but the 125 2 strokes have less low and midrange power)

Example >> Roadrace bikes.. latest generation 1000cc 4 strokes can make 280 HP.

... Latest generation 500cc 2 strokes extrapolated out to 1000cc make 380 HP

(despite being tuned for mid-range)

So the truth is that 2 strokes still retain almost twice the HP per CC as a 4 stroke if you are talking peak HP only.

Or... if tuned for more midrange... they still make 50% more peak HP.

Too bad the US Government is virtually outlawing almost any 2 strokes in almost any form.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Other advantages of 2 strokes ??... basically 3 moving parts... very much cheaper to produce the motor itself.

Very much cheaper also... to do a 2 stroke rebuild.

But 2 strokes wear out faster.

And they generally don't burn as clean... (that is not entirely true nowadays)... Honda and Aprilia and another manufacturer all have 2 strokes that could pass US emission regulations (with catalytic converters and carefully calibrated fuel injection systems)

... But they don't believe there is a market large enough to justify production.

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  the power dispute.Topic by: Ryan J Ryan J 12/28/01 06:04PM
  Re: the power dispute.Re: Jim C Jim C 12/28/01 07:19PM
  There is no dispute (over power)Re: Fred Fred 12/29/01 12:36AM
  Re: There is no dispute (over power)Re: Ryan J. Ryan J. 12/29/01 02:33AM
  Name a 2 stroke with "pressure lubed" brRe: Fred Fred 12/29/01 11:22AM
  spota read "pressure lubed" bearingsRe: Fred Fred 12/29/01 11:24AM
  Re: spota read "pressure lubed" bearingRe: Ryan J. Ryan J. 12/29/01 02:50PM
  Re: spota read "pressure lubed" bearingRe: Ryan J. Ryan J. 12/29/01 02:56PM
  Re: spota read "pressure lubed" bearingRe: Ron Brown Ron Brown 12/29/01 03:06PM
  Re: Name a 2 stroke with "pressure lubed&quotRe: Ryan J. Ryan J. 12/29/01 03:10PM
  Re: Name a 2 stroke with "pressure lubed&quotRe: Ron Brown Ron Brown 12/29/01 03:21PM
  You are a great source of misinformationRe: Fred Fred 12/29/01 06:16PM
  I am a great source of misinformationRe: Ryan J Ryan J 12/29/01 09:07PM
  You sure are.Re: Fred Fred 12/30/01 11:00AM
  Re: You sure are.Re: Ron Brown Ron Brown 12/30/01 11:51AM
  Re: You sure are.Re: Fred Fred 12/30/01 01:02PM
  Re: You sure are.Re: Ron Brown Ron Brown 12/30/01 01:10PM
  aaaaahahahaha!Re: Fred Fred 12/30/01 02:05PM
  Re: aaaaahahahaha!Re: Ron Brown Ron Brown 12/30/01 02:17PM
  Re: You sure are.Re: Ryan J Ryan J 12/30/01 05:26PM
  Re: You sure are.Re: Ron Brown Ron Brown 12/30/01 06:20PM
  Re: You are a great source of misinformationRe: Ryan J Ryan J 12/30/01 05:31PM
  Re: You are a great source of misinformationRe: Ron Brown Ron Brown 12/30/01 06:23PM
  the pressure is tooooo muchRe: Fred Fred 12/30/01 06:32PM
  Re: the pressure is tooooo muchRe: Wayne Wayne 12/30/01 06:38PM
  Re: the pressure is tooooo muchRe: Ryan J Ryan J 12/30/01 06:59PM
  Re: the pressure is tooooo muchRe: Ike Ike 01/01/02 06:23PM
  because its better than thatRe: Fred Fred 01/01/02 07:14PM
  Re: the power dispute.Re: Ron Brown Ron Brown 12/29/01 12:11PM
  lotta confusionRe: Fred Fred 12/29/01 01:41PM
  Re: lotta confusionRe: Ron Brown Ron Brown 12/29/01 01:51PM
  VESPA ET2 IniezioneRe: Ron Brown Ron Brown 12/29/01 02:39PM
  Re: the power dispute.Re: gimmyjimmy gimmyjimmy 12/29/01 06:34PM
  Re: the power dispute.Re: Ryan J Ryan J 12/29/01 09:08PM
  Re: the bottom line!!!Re: Ike Ike 01/01/02 06:33PM

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