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Location:
Townsville, QLD, Australia
Registered:
June 2005
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DIY Port and Polish
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Mon, 25 July 2005 13:31
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Just read through this http://www.sa-motorsports.com/diyport.shtm
I have a dremel and can use it alright. I am just wondering how hard it is doing the poritng yourself and how much time are you looking at? Anyone had a crack at it and want to share experiences?
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: DIY Port and Polish
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Mon, 25 July 2005 19:27
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if you just want to clean it up, maybe dremel will be ok, but very slow.. if the head is alloy it will also clog any abrasive bit you use.
if you want to take off more material, use a drill or preferably a die grinder with a proper alloy cut burr.
you can also use the 3M discs, which have very good removal properties for alloy, but are a little exxy for a consumable ($2 each for 1" dia)
don't worry abot polish for intake, rough surface flows better.. for exhaust, maybe it will slow adhesion of carbon but not much benefit. for combustion chamber, maybe polish is good..
here's some of my effort.
http://www.materials.unsw.edu.au/~sford/3khdpixnew .html
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Location:
Tamworth
Registered:
August 2004
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Re: DIY Port and Polish
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Mon, 25 July 2005 21:32
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It will not flow any differenent if it is polished or just smooth. A smooth(slightly textured) surface will be more benefitial as it helps with fuel atomisation.
Do not get them looking like a mirror.
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Location:
Brisbane
Registered:
July 2005
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Re: DIY Port and Polish
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Mon, 25 July 2005 22:52
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Q. Can I run your products in my Dremel tool?
A. No. You should use an air powered die grinder, either straight or right angle, with a maximum R.P.M. of 25,000. You can also use an electric grinder that has a 1/4" collet, and it, too, should not exceed 25,000 R.P.M.
From the FAQ on the website.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: DIY Port and Polish
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Tue, 26 July 2005 04:11
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| jeffro RA28 wrote on Tue, 26 July 2005 07:32 |
It will not flow any differenent if it is polished or just smooth. A smooth(slightly textured) surface will be more benefitial as it helps with fuel atomisation.
Do not get them looking like a mirror.
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afaik, a rough sandcast finish has best properties in terms of the stagnant layer on the metal surface reducing friction and reducing fuel dropout......
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Location:
Townsville, QLD, Australia
Registered:
June 2005
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Re: DIY Port and Polish
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Tue, 26 July 2005 08:07
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| Lukass wrote on Tue, 26 July 2005 08:52 |
Q. Can I run your products in my Dremel tool?
A. No. You should use an air powered die grinder, either straight or right angle, with a maximum R.P.M. of 25,000. You can also use an electric grinder that has a 1/4" collet, and it, too, should not exceed 25,000 R.P.M.
From the FAQ on the website.
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The dremel runs at under 25 000 rpm so why wouldn't you be able to use it?
This guy here did his intake using it: http://vamp.darkravers.net/DIYPortPolishIntakeMani fold.cfm
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Location:
Tamworth
Registered:
August 2004
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