[Fot] Porting and Polishing (and engine building tips in general)

[Kas Kastner]

With the amount of squish area and the high compression used in our racing 
engines I don't think that more turbulence is required for better 
combustion.
----- Original Message ----- 
From: "Tony Drews" <tony at tonydrews.com>
To: <fot at autox.team.net>
Sent: Saturday, February 28, 2009 2:17 PM
Subject: Re: [Fot] Porting and Polishing (and engine building tips in 
general)


> Actually it was "turbulence" they were after, not "swirl".
>
> - Tony
>
> At 04:10 PM 2/28/2009, Tony Drews wrote:
>>One of the circle track motor building articles I read showed the top of a 
>>piston that had been dimpled (looked like with a center punch).  The idea, 
>>as I recall it, was to promote more "swirl" in the combustion chamber.
>>
>>- Tony
>>
>>At 02:10 PM 2/28/2009, Terry Stetler wrote:
>>>Perhaps the term "port shaping" would better describe what is necessary?
>>>
>>>Also, it would seem that if you could put a uniform surface texture along 
>>>the
>>>entire port, that would guarantee laminar flow, much as the dimples on a 
>>>golf
>>>ball do, that would be the way to go.  But now we are getting into the 
>>>black
>>>arts, and gray areas of the GCR, etc...
>>>
>>>Terry Stetler
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