Neil,
I would think that shedding heat and controlling foam are the most
important items for the oiling system to accomplish. So then you are
both right, in a sense, keep the engine together and more HP will be made. (-:
Skip
At 12:34 PM 10/18/2006, Albaugh, Neil wrote:
>Ed;
>
>HRM has an article on coatings that seems to support what you are
>saying. The only coatings that made worthwhile HP improvements were the
>ones having to do with heat, not oil- shedding.
>
>Regards, Neil Tucson, AZ
>
>
>-----Original Message-----
>From: owner-land-speed@autox.team.net
>[mailto:owner-land-speed@autox.team.net] On Behalf Of Ed Weldon
>Sent: Wednesday, October 18, 2006 11:07 AM
>To: land-speed@autox.team.net; Higginbotham Land Speed Racing
>Subject: Re: Internal Engine Block Painting
>
>Skip--Only use it on the as cast surfaces. What you're trying to seal
>in is
>the casting core sand particles, sand grit from the foundry final
>cleanup
>process that involves the uses of abrasive grinders as well as tramp
>rust,
>scale and dirt in corners and pores. I would not attempt to use it on
>any
>machined surfaces especially where the surface can't be roughened to
>provide
>a good grip for the coating. Don't attempt to put it in any drilled
>holes.
>You'll likely restrict the flow rather than improving it. If you're
>marginal with oil feed holes drill them larger or at least chamfer the
>edges
>at the openings (Which will likely help your own feelings more than the
>flow
>losses of the oil)
>
>I remain unconvinced that any improvement on the surface finish of oil
>passageways will have any measurable effect on flow rate. Virtually all
>oil
>flow is in the regime of laminar flow where surface roughness is not a
>factor. The classic engineering pipe friction curves for friction
>factor at
>various Reynolds numbers shows this. It's a whole different issue for
>thin
>liquids like water, gasoline and alcohol. In the size lines we use the
>flow
>is turbulent and pipe roughness counts. But nowhere near as much as the
>actual area of the pipe flow path (the diameter in most cases).
>
>Ed Weldon
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