BMFC, Tiiming, and Coatings

Programmer nwester at eidnet.org
Thu May 27 04:22:01 GMT 1999


Fred,

Thanks for the support--I thought this stuff was a re-hash on a lot of old
ideas gone south. I guess it all works out to what you "think" is working
for you.

Lyndon
-----Original Message-----
From: FHPREMACH at aol.com <FHPREMACH at aol.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Tuesday, May 18, 1999 12:40 AM
Subject: Re: BMFC, Tiiming, and Coatings


>In a message dated 5/16/99 9:12:57 AM Pacific Daylight Time,
>nwester at eidnet.org writes:
>
><< I have no faith in some kind of coating--just like I have no faith in
>Teflon
> additives...instead of coating the undersides of pistons, or coating the
> interior of an engine--polishing the interiors smooth would have a greater
> effect of oil return, and less oil "dwell".  As far as piston ring
> manufacturers go--gapless piston rings and improper end gaps will always
> yield differing results. You can make anything look good on a
> dyno--depending on operator.
>
> Lyndon IPTECH
> -----Original Message----- >>
>Hi,
> I just wanted to add a bit to this idea. most research has noted that the
>"Leave it cast and paint it black" ideas of long ago still hold true. Oil
is
>a strange beast at times. you want to cool it and drain it to the sump, but
>as it cools, it slows down the drainback. Rough surfaces increase the
surface
>area and increase cooling. As for teflon, the jury is still out on the
>longterm results. Polishing the interior of motors has come in and out of
>use. and at one time, polishing the entire crankcase, crank, rod, and
filling
>the balance holes in two strokes was supposed to lead to increased
>horsepower, but like stuffer plates, it seems to have lost favor. Coatings
>seem to come in and out of fashion. I do believe in coatings for certain
>areas, but am still looking into a couple of unorthodox ones. I will give
>results as they ocur.
>BTW, has anyone tried the carbide cylinder bore treatment that was in the
>threads a few months ago? I wondered about that with a Hard Anodized piston
>skirt might affect wear.
>Fred
>




More information about the Diy_efi mailing list