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Topic: How to clean up Valve Covers

in Forum: C3 Engines


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How to clean up Valve Covers (1/10)
 4/27/12 6:57am
manget1Lifetime Member
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Indianapolis, IN - USA

Vette(s):
Silver 1974 Convertible - L82 4 speed Low miles (was only 8,900 when I bought it in March 2006) - Now 54K miles. Original owner bought it as an investment for son's college expenses. 2008 Jetstream Blue Convertible


Joined: 9/3/2006
Posts: 2418

I've had my L-82 Valve Covers bead blasted, but they don't have any luster and there are still a few places (between the fins) where there's some pitting.
 
I'm going to order replacements and compare them to the originals to see which look better.  In the meantime, I would like to try to clean up the old ones a bit.  Any suggestions?  Anything anyone can think of to give these a bit of the original luster?  I'm not looking for a shine per se, just for them to look sharp.
 
I do have an orbital buffer I use for waxing the car.  Not sure if using this with some special polish might get me somewhere.
 
Regardless of which ones I use, don't worry, I will hold on to the originals...


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Re: How to clean up Valve Covers (2/10)
 4/27/12 7:57am
eboLifetime Member
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Holland Patent, NY - USA

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#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker


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Marshal, were they "Glass Beaded" some times that will roll up or pit aluminum.
Soda blast would be better. You should look at Eastwoods buffing kit and a small hand held buffer or grinder to polish them back up. Eastwoods kit comes with a range of compounds.
Evil Smileebo


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Re: How to clean up Valve Covers (3/10)
 4/27/12 12:35pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

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#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


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If memory serves(does it ever?), blasting using crushed walnut shells works really well on aluminuminum...gives it a nice sheen, with very little, if any, surface texture. Sandblasting, or glass beads will clean it, but it also leaves the surface pretty rough. You'd have to do a LOT  of sanding before polishing to make them look as nice as the early covers, like the LT-1s.

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Re: How to clean up Valve Covers (4/10)
 4/27/12 2:37pm
eboLifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker


Joined: 6/3/2008
Posts: 4421

Joel are you asking Marshal to crush his walnuts?  I'm shell shocked!
Evil Smileebo


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Re: How to clean up Valve Covers (5/10)
 4/27/12 2:45pm
The RookLifetime Member
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Pittsburgh, PA - USA

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1979 L-82, 3 spd auto, car was originally Lt. Beige currently painted Sportsman Red, Doeskin leather interior, 103,000 miles......


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I used mothers aluminum polish on th fins on mine an they turned out pretty nice.....
Re: How to clean up Valve Covers (6/10)
 5/2/12 6:28am
manget1Lifetime Member
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Indianapolis, IN - USA

Vette(s):
Silver 1974 Convertible - L82 4 speed Low miles (was only 8,900 when I bought it in March 2006) - Now 54K miles. Original owner bought it as an investment for son's college expenses. 2008 Jetstream Blue Convertible


Joined: 9/3/2006
Posts: 2418

Update:
 
I tried 2 routes.
1.  I ordered replacements from Corvette Central
2.  I got some Mother's Polish
 
The replacements from CC arrived yesterday and, while some might have been thrilled, I was not.  The ones I got are aluminum, but they are also chromed.  They do not look original at all, and that's what I'm going for here.  They'll be going back
 
The Mother's provided a better look on the original than was had with the blasting alone.  They now have (what I would consider) a look that is closer to the original patina.  Unfortunately, there are still a few rough sports here and there, but overall, they are a 100% improvement over what they were before the blasting.
 
Pictures will be coming soon


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Re: How to clean up Valve Covers (7/10)
 5/4/12 9:45pm
yostusota
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York, PA - USA

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1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top


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I would sure like to see those...I polished mine today with my port tool with a 3m headlight buffer kit...worked great...just can't figure out how to clean or polish inside the fins...oh well..pop up a pic of what yours turned out to look like!!..needs ta see it!!

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Re: How to clean up Valve Covers (8/10)
 5/4/12 11:38pm
danascar
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Germansville, PA - USA

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yostusota said: I would sure like to see those...I polished mine today with my port tool with a 3m headlight buffer kit...worked great...just can't figure out how to clean or polish inside the fins...oh well..pop up a pic of what yours turned out to look like!!..needs ta see it!!


Try a toothbrush, Rich.

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Re: How to clean up Valve Covers (9/10)
 5/4/12 11:50pm
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top


Joined: 5/18/2010
Posts: 1518

That would get in there and clean it...I need it polished though to match the rest of the valve cover..not a big deal though.

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Re: How to clean up Valve Covers (10/10)
 5/5/12 10:20am
gellisvetteLifetime Member
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PERRYSBURG, OH - USA

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1975 T-Tops,Lite Custom work,Many engine mod. 700R4 trans. body is shaved,17" wheels bf goodrich g-force tires,heavy sway bars front&rear rack&pinion steering,550 slolom springs with gas shocks.


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Goto a tool and die shop they have small buffing tools that fit perfectly. Run them off a drill motor or dremmel tool. Did mine and they worked great.
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