Heat transfer is proportionate to the area. Rough surfaces give more area
than polished ones (no bumps!!). Thus rough transfers more heat than
polished - Also polished "reflects"heat back into lump more than rough.
Best heat transfer is rough black matt finish
At 06:13 PM 6/9/00 -0400, Chris Kotting wrote:
>I was always under the impression that a polished surface had less heat
>transfer than a rough surface. The exterior of the head on our cars
>doesn't do much heat dissipation to the air, but it does do >>some<<. I
>don't know if the reduced heat dissipation is enough to be an issue, but
>thought I'd mention it for discussion's sake.
>
>Chris K.
>
>> Date: Fri, 09 Jun 2000 17:50:14 GMT
>> From: "Dereck C" <derex39@hotmail.com>
>> Subject: Re: Oil filter
>>
>> Glad you cleared up the information on the holes that you puncture in the
>> filter, in the archive it was not that clear where to do it.
>>
>> Here is a potentially useless question, but for those who have opinions on
>> cosmetic alterations here goes...
>>
>> I have purchased a aluminum (non-crossflow) head to replace the cracked
>> original one and have been thinking about polishing it out(the exterior).
>> Does anyone have an idea how difficult this might be? I was thinking of
>> buying a dremel (or aircompressor attachment, ideas?) and some aluminum
>> polishing attachments (if there such a thing) and having a go. Are there
>> advantages to polished vs cast aluminum on the exterior, ease of
>> maintenance? I also have been contemplating spraying the block high
>> temperature aluminum silver (acrylic enamel found at local hardware store
>> manufactured by DAP). I did the oil pan as a test, looks good. Does
anyone
>> have pictures of a silver block, or would I be the only wanker on the
list?
>> Pictures of other colors? Just thought I would put some light hearted
>> questions out there for those who have spring fever like I. I will leave
>> the political question alone.
>>
>> Dereck
>> Card carrying member of the right wing conspiracy.
>
>
Regards
Barrie Robinson
barrier@bconnex.net
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