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#1
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Hand sand or media blast these valve covers?
I have 3 sets of Valve Covers that I am going to repaint. (2 sell and one keeper).
I soaked them in degreaser so the business side is very clean. I have access to a Media Blaster (glass beads) and I will seal them up so no debris will get inside (1/4 inch plywood cut to fit the opening with a gasket). Or should I break out the sandpaper and elbow grease? Dave |
The Following User Says Thank You to daduck For This Useful Post: | ||
#2
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I usually hit them with a wire wheel, peels the paint right off.
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1966 GTO 1969 Lemans Convertible- F.A.S.T. legal family cruiser. 12.59 on G70-14 Polyglas tires. 1.78 60' 1969 Bonneville Safari- cross country family cruiser. . 1979 Trans Am 400, 4-speed, 4 wheel disc. View from the drivers seat racing down Atco Raceway- http://www.youtube.com/watch?v=GhYDMdOEC7A Ride along in the other lane-http://www.youtube.com/watch?v=mIzgpLtF_uw |
#3
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Your going to need to do some minor body work on those where the rust was once you remove it all by whatever means.
Be sure to use a selfetching primer first and then a sandable primer to get it all leveled before you color coat it.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#4
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DO NOT blast them. any type of blasting material get get stuck in the oil dripper assembly and not be able to be removed easily. The grit WILL come loose when the engine is running, without doubt...
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... |
#5
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Oven cleaner for the grease residue. It will loosen some old paint also. But oven cleaner is wimpier than it used to be.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs Last edited by Skip Fix; 01-14-2020 at 11:14 AM. |
#6
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I did the same on mine. I taped the back completely so no media could get inside and also taped the breather hole on top. I epoxy primed, and then used build primer,and glaze. Sanded and sealed and them painted with 2K paint. They look excellent and were not a mess to clean. Self etch primer base and build primer over is also good. I do not have a separate picture so here is the top of the engine.
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#7
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Soda blasting is a far less aggressive method of media blasting parts. The plus side is it dissolved on water, unlike glass beads. Soak in a cleaning solution like oven cleaner then soda blast them.
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“It takes considerable knowledge just to realize the extent of your own ignorance.” Dr. Thomas Sowell |
#8
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If you're confident in your ability to seal them up so no beads get inside, that's the easy button. Otherwise it would be simple enough to strip them with a wire wheel and sandpaper.
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#9
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This^ . Do not blast them under any circumstance.
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http://www.machdevelopment.com/album...775/527566.htm |
#10
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Ok. Thanks for the feedback.
Sounds like I should avoid media blasting and I will try a wire wheel. Followed by cleaning ...self etching primer.....then a topcoat. |
#11
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valve covers
Quote:
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#12
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I have had four sets of covers soda blasted at my machinists shop. I have run these covers on different engines and I have never had a problem
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#13
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Quote:
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Greg Reid Palmetto, Georgia |
#14
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Is this safe on aluminum covers - like the M/Ts?
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears '69 LeMans Vert, 350, #47 heads: Non-running project |
#15
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I vote, do not blast! I've done all the above. Brush on paint remover,and a pressure wash works also . Whatever u do, as mentioned, etch prime, high build sandable prime, then paint.
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1970 amc rebel 4-door, faded blue paint,290 emblems on car, 455 under the hood.Turbo 400,3.15 gear. Best so far 1/8 et,8.90 on street tires, Since that I have added 400 heads. I call it a rat sleeper. |
#16
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Nope. It reacts with aluminum—pretty much eats it. Try an experiment by spraying it on piece of aluminum foil.
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#17
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It'll mess up aluminum.... charcoal colored splotches and nothing I know of will remove it. Ask me how I know.
Thanks for the reminder...I'd hate for someone to try that. If you do get it on aluminum, get it off right away and you'll be ok. MOTHERS Mag and Aluminum Polish is the best I've used for aluminum.
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Greg Reid Palmetto, Georgia |
#18
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I do this as a hobby myself on occasion. I just use a wire wheel as previously noted. So soak it in parts cleaner and brush it, then wire wheel. Then I knock out any big dings.
High temp primer, ceramic paint, and ceramic clear. I don't even bother with the small dings. I advertise them as driver quality and put in the ad "Any small dings they earned in their life they get to keep" The high temp clear makes a big difference over just painting them btw.
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1967 Firebird 462 580hp/590ftlbs 1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455 Owner/Creator Catfish Motorsports https://www.youtube.com/@CatfishMotorsports |
#19
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I have to say this is a pretty good thread and a good example of how to do things in the car hobby. One thing to remember that there are about 10 different ways to do this and 7 are not wrong!
Wrong: Paint over chipping paint and oil media blast and make a mess inside the covers Just reinstall and leave rusty (not really wrong and much better than media blast inside) Make sure to check rails are straight before painting or reinstalling at bolt holes Me: I over did mine and am very happy with the results. But I epoxy primed, high build primed a few different times, spot putty on spot welds and small imperfections, and painted with Acrylic Enamel I also used Carb studs instead of bolts to retain and for myself I really like the look. If you look at the picture on post above I also used a needle scaler on the face on my aluminum heads and painted them to look more stock with factory valve covers. I did a lot of different things to update my car and still have a factory look to it. Make sure what ever you do it is using the tools and skills you have to do your best, but do not do it wrong! Paul |
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