The problem is you can not isolate it down to the bore and stroke only. By
nature the other parts do form a combination that favors a particular bore
and stroke combination. If you change the baseline heads and cam then the
best bore and stroke combination changes with it.
Sorry but the whole method is flawed from the begining. The only results
that can be obtained is the best bore and stroke combo for all the other
parts included in the combination. This is way bad science, and no real
meaningful results are possible.
What happens if you pick a differnt set of heads and cam? the results
change...
Dave
> -----Original Message-----
> From: owner-land-speed@autox.team.net
> [mailto:owner-land-speed@autox.team.net]On Behalf Of Keith Turk
> Sent: Monday, July 12, 2004 11:53 PM
> To: land-speed@autox.team.net
> Subject: Bore stroke combinations
>
>
> David and I were chatting on the phone bout this idea... and now
> I've got a
> much better idea about what he was talking about...
>
> He's actually done this test... the results of which will be
> published at a
> later date... his real request was why do you think one is better then the
> other... . he is looking for your personal perspectives... he is
> researching
> it to find truth.. and only the dyno and corrected conditions can give him
> that... empirical data...
>
> The reason he's limiting it to a particular Cam and head combination is so
> neither can be optimized for a purpose and to try and limit the
> test to Bore
> and stroke only.... it's obvious that a combination can be
> optimized one way
> or the other... and either combination can be set up as both a
> high rev motor
> or a torque motor....
>
> My understanding of his goal is to decide if there is any merit
> what so ever
> in a particular bore and stoke over another combination.... without
> artificially pimping one set up over the other...propping it up
> so to speak
> with optimized cam's for a given combination...
>
> This is a PURE bore and stoke test.
>
> Now what say you?
>
> Keith
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