Re: Porting burrs
[Re: Cab_Burge]
#2836767
10/23/20 10:42 PM
10/23/20 10:42 PM
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Joined: May 2012
Posts: 1,853 South Bend
John Brown
top fuel
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top fuel
Joined: May 2012
Posts: 1,853
South Bend
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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.
July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
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Re: Porting burrs
[Re: John Brown]
#2836779
10/23/20 11:08 PM
10/23/20 11:08 PM
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Joined: Feb 2015
Posts: 2,086 CA
crackedback
top fuel
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top fuel
Joined: Feb 2015
Posts: 2,086
CA
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mcmaster carr
burrs4less
msc industrial
Agree on dipping the burr in pb blaster, wd40, something to help keep your tools from loading up.
Last edited by crackedback; 10/23/20 11:09 PM.
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Re: Porting burrs
[Re: Medlock51]
#2837379
10/25/20 07:01 PM
10/25/20 07:01 PM
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Joined: Feb 2016
Posts: 201 PA
Scully
enthusiast
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enthusiast
Joined: Feb 2016
Posts: 201
PA
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Re: Porting burrs
[Re: hemienvy]
#2838635
10/29/20 07:53 AM
10/29/20 07:53 AM
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Joined: Jan 2003
Posts: 28,078 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,078
Irving, TX
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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.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Porting burrs
[Re: feets]
#2838642
10/29/20 08:31 AM
10/29/20 08:31 AM
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Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
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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
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Porting burrs
[Re: pittsburghracer]
#2838643
10/29/20 08:37 AM
10/29/20 08:37 AM
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Joined: Jan 2003
Posts: 13,416 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,416
Marion, South Carolina [><]
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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
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.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Porting burrs
[Re: an8sec70cuda]
#2838717
10/29/20 11:55 AM
10/29/20 11:55 AM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
master
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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Boelube works excellent for preventing buildup also.
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: Porting burrs
[Re: pittsburghracer]
#2839292
10/30/20 01:33 PM
10/30/20 01:33 PM
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Joined: Sep 2003
Posts: 19,687 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,687
north of coder
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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.
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Re: Porting burrs
[Re: moparx]
#2839308
10/30/20 01:57 PM
10/30/20 01:57 PM
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Joined: May 2012
Posts: 1,853 South Bend
John Brown
top fuel
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top fuel
Joined: May 2012
Posts: 1,853
South Bend
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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.
July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
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