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Porting burrs

Posted By: hemienvy

Porting burrs - 10/24/20 01:33 AM

Where are you guys getting grinding burrs for porting aluminum ?
Posted By: Cab_Burge

Re: Porting burrs - 10/24/20 02:17 AM

Snap On, Eastern tools and maybe Northern tools and several others I can't think of right now whiney
Aircraft Spruce and maybe Chief Aircraft supply in Grants Pass, OR if they are still open scope
Posted By: John Brown

Re: Porting burrs - 10/24/20 02:42 AM

Just slightly off subject, but I found that BLASTER spray helps keep the aluminum from sticking to the burr when porting or reshaping aluminum on heads or manifolds.
Posted By: crackedback

Re: Porting burrs - 10/24/20 03:08 AM

mcmaster carr

burrs4less

msc industrial

Agree on dipping the burr in pb blaster, wd40, something to help keep your tools from loading up.
Posted By: Cab_Burge

Re: Porting burrs - 10/24/20 06:05 AM

I use candle wax, rub the burr in it before starting and again later when it is warmed up every 20 to 40 minutes up
Posted By: ou812

Re: Porting burrs - 10/24/20 06:59 PM

Originally Posted by hemienvy
Where are you guys getting grinding burrs for porting aluminum ?


http://www.ruffstuff.com/pages/carbide.html
Posted By: Medlock51

Re: Porting burrs - 10/25/20 01:53 PM

eBay...
Posted By: Scully

Re: Porting burrs - 10/25/20 11:01 PM

https://goodson.com/collections/porting-and-polishing/products/long-shank-aluminum-rotary-files
Posted By: Stanton

Re: Porting burrs - 10/26/20 01:21 AM

I've had good luck with the ones that the tool vendors at swap meets sell. You know - the guys with 20 tables with tool that run from $1 up. At big meets there'll be four or five of those guys spread out around the event.Get yourself a couple different shapes and get both short and long ones. For aluminum you want the coarse bits.
Posted By: maximus

Re: Porting burrs - 10/26/20 11:36 AM

Most tool supplies carry them. Northern Tool Supply, Production Tool Supply, ABC Machinery. Places that sell tools and machinery will carry them. Search them on line. Don't use the fine cutters they load up easily with aluminum, I believe I use 8 flute cutters then toosie roll sanding pads of various grit.
Posted By: moparx

Re: Porting burrs - 10/26/20 05:18 PM

Originally Posted by Stanton
I've had good luck with the ones that the tool vendors at swap meets sell. You know - the guys with 20 tables with tool that run from $1 up. At big meets there'll be four or five of those guys spread out around the event.Get yourself a couple different shapes and get both short and long ones. For aluminum you want the coarse bits.



same here ! ^^^^ i use the carbide coarse flute style for aluminum.
beer
Posted By: hemienvy

Re: Porting burrs - 10/26/20 05:31 PM

Alright, thanks guys. I figured some of these cutters were better than others, better steel.
Also want USA made, not china.
Posted By: LaRoy Engines

Re: Porting burrs - 10/27/20 06:07 PM

Originally Posted by ou812
Originally Posted by hemienvy
Where are you guys getting grinding burrs for porting aluminum ?


http://www.ruffstuff.com/pages/carbide.html
Same here. Just ordered more yesterday.
Posted By: Medlock51

Re: Porting burrs - 10/29/20 08:01 AM

Good luck...many may offer domestic burrs but how can you tell? I prefer US sourced stuff, too.
Posted By: feets

Re: Porting burrs - 10/29/20 11:53 AM

WD40 is one of the best lubricants for cutting aluminum. I use it on my mill and lathe. You want the coarse bits so there's room to clear the chips in front of the cutting edge.
Posted By: pittsburghracer

Re: Porting burrs - 10/29/20 12:31 PM



You guys and your coarse burrs kill me. I port a lot of heads and rarely use an aluminum coarse cut burr. I mainly use double cut burrs dipped in a WD40 transmission fluid mixture. An aluminum burr cuts, bounces, gouges, and digs compared to a double cut burr. When I’m done honestly I rarely even use a sanding roll on my stuff. Customers like to see smooth and shiny so I may buff their stuff up some. Slow the grinder down to a speed you can handle and grind away
Posted By: an8sec70cuda

Re: Porting burrs - 10/29/20 12:37 PM

Originally Posted by pittsburghracer


You guys and your coarse burrs kill me. I port a lot of heads and rarely use an aluminum coarse cut burr. I mainly use double cut burrs dipped in a WD40 transmission fluid mixture. An aluminum burr cuts, bounces, gouges, and digs compared to a double cut burr. When I’m done honestly I rarely even use a sanding roll on my stuff. Customers like to see smooth and shiny so I may buff their stuff up some. Slow the grinder down to a speed you can handle and grind away

iagree I'm no pro porter by any means, but I do some whittling on my own stuff. The aluminum cutting burrs are very aggressive and definitely more prone to bounce and gouge from my experience. I only use them when I'm removing a lot of material...like taking the cloverleaf out of a 4500 flange intake. Once the big stuff is gone, I go to the cast iron type burrs. As long as you keep it lubed, it works fine.
Posted By: astjp2

Re: Porting burrs - 10/29/20 03:55 PM

Boelube works excellent for preventing buildup also.
Posted By: moparx

Re: Porting burrs - 10/30/20 05:33 PM

Originally Posted by pittsburghracer


You guys and your coarse burrs kill me. I port a lot of heads and rarely use an aluminum coarse cut burr. I mainly use double cut burrs dipped in a WD40 transmission fluid mixture. An aluminum burr cuts, bounces, gouges, and digs compared to a double cut burr. Slow the grinder down to a speed you can handle and grind away



i use course bits all the time for roughing out, although you bring up a good point about slowing the grinder [air or electric] down.
my main fault is ASSuming guys know how to use a grinder.
finishing is always done with a fine burr, then sanding rolls if needed for the finish required.
castings differ from one kind/brand to another, and billet is different yet depending on composition.
your WD40/transmission fluid is a great lube, [i use that combo] and i have found bar soap and stick wax also work good in some instances.
i have also wanted to try a "gritty" type hand cleaner just to see what that would do, but i haven't got around to it.
if a guy hasn't worked with burrs before, it is best to practice on scrap first to see how they work for you, then proceed cautiously until you build up confidence in your work.
make absolutely sure your work piece is held solid by whatever means necessary. it is impossible for you to do any kind of acceptable work if you are chasing the piece around the work bench !
and as always, "practice makes perfect". some have the knack and can whittle away with little effort, while it takes others more time and effort.
remember guys, pittsburger does good work - he has been at it for a while, so listen to his advice. up
beer
Posted By: John Brown

Re: Porting burrs - 10/30/20 05:57 PM

Using a grinder to port heads or manifolds is sorta like shooting a gun. Sometimes two hands on the tool works a lot better than one.
Posted By: moparx

Re: Porting burrs - 10/30/20 06:02 PM

another thing i forgot to mention.
depending on what is being done, a 90 degree grinder works better than a straight one.
the two handed method works great as well ! [forgot to state that too. i forget a lot of "stuff" realcrazy]
beer
Posted By: pittsburghracer

Re: Porting burrs - 10/30/20 07:20 PM




No air or big two handed electric grinders for this guys. I did to much of that in that steel mill during my Millwright years. Lol. Now it’s lite, quiet, and exactly the speed I want.

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Posted By: moparx

Re: Porting burrs - 10/31/20 04:34 PM

that's a nice little unit ! foot control i presume ?
beer
Posted By: pittsburghracer

Re: Porting burrs - 10/31/20 04:43 PM

Originally Posted by moparx
that's a nice little unit ! foot control i presume ?
beer



Yes Sir. You can see it on the floor in the picture. I will never go back to anything else
Posted By: pittsburghracer

Re: Porting burrs - 10/31/20 04:49 PM


My little cubby hole.

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Posted By: moparx

Re: Porting burrs - 10/31/20 04:52 PM

i see it now.
you do way more work than i do, so that thing looks like the best way to go.
and if you need x-tra bux, you can do some heavy duty dentistry work...... biggrin
beer
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