Author Topic: port and polish  (Read 2284 times)

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Offline Nicks

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port and polish
« on: February 17, 2014, 08:05:20 PM »
Ok so last year on my ohv 15 briggs when i ported and polished the head and intake i used a diamond bit reamer on my air tool and a dremel with the buffing pads to polish,but on the vanguard its more to do so i was wondering how u guys port and polish,whats the best ways and what tools are best to use?


Nick Schiveley

Offline leadslead

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Re: port and polish
« Reply #1 on: February 18, 2014, 06:31:21 AM »
I use a old sears Dremal tool with pen atach ment  & buy some 5-10 bits for it & clean them reg works for me & I don't polish any thing I'll smooth it all out on exoust with 120 little sanding drum that's about it
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Offline willenglish

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Re: port and polish
« Reply #2 on: February 18, 2014, 09:55:23 AM »
I would use the finest cutting tools available...there isn't a vast quanity of material that needs removing to start with, and fine fluted cutters and finer grit abrasives do not leave coarse gouges and scratches to be polished out. Also with coarse cutting tools its VERY easy to cut and grind completely thru the casting...and it can be almost impossible to weld some spots back up.
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Offline Huffy044

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Re: port and polish
« Reply #3 on: February 18, 2014, 10:13:50 AM »
I use high speed cutting tools (20K rpm), I have found the biggest secret is to keep the cutting tool lubricated. Spray WD-40 on it ever so often and the aluminum wont stick to the tool.
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Offline willenglish

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Re: port and polish
« Reply #4 on: February 18, 2014, 12:20:36 PM »
Huffy is right..20-30 k rpms...keep it lubed..I use wd-40 too...and carbide cutters work great.  I'd stay away from any knd of stone, on aluminum...even with lube will very soon gall and clog with metal.
William L. English, jr.

Offline rotten ron

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Re: port and polish
« Reply #5 on: February 18, 2014, 04:48:30 PM »
There are coarse carbide cutters made for aluminum,don't clog as much,I port heads almost every day,mostly auto heads but lots are aluminum,use sanding rolls to finish,they come in different grits and sizes

Offline Nicks

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Re: port and polish
« Reply #6 on: February 18, 2014, 05:24:46 PM »
Well when i ported my last head and intake i made the ports the same size as the gasket,is that the wrong way to do it?
Nick Schiveley


Offline willenglish

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Re: port and polish
« Reply #7 on: February 18, 2014, 06:16:33 PM »
All heads are different...some have lots of material that CAN be removed...others  have precious little before a hole comes in them. Its easy to cut too much...not just because of grinding a hole in them, but for performance reasons too. Its quite easy to get them too big and actually hurt performance.
William L. English, jr.

Offline George Herrin

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Re: port and polish
« Reply #8 on: February 18, 2014, 07:56:24 PM »
beez wax nuf said.
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Offline Nicks

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Re: port and polish
« Reply #9 on: February 18, 2014, 08:14:23 PM »
Well i guess ill try that stuff thanks
Nick Schiveley

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Re: port and polish
« Reply #10 on: February 18, 2014, 08:18:26 PM »
DISH WASHING LIQUID WORKS IN A PINCH.
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Offline The Tank

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Re: port and polish
« Reply #11 on: February 18, 2014, 08:25:05 PM »
I just use my pocket knife for all my port work.
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Re: port and polish
« Reply #12 on: February 18, 2014, 08:33:11 PM »
I just use my pocket knife for all my port work.
THAT'S ONE HECK OF A KNIFE AND YOU MUST HAVE A POPEYE ARM!!  LOL
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Offline flatlanderfornow

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Re: port and polish
« Reply #13 on: February 19, 2014, 05:37:23 PM »
I just use my pocket knife for all my port work.
me too.  we can't do a full port job, but skinning a little of the flash
don't hurt. 
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