Bubbles in the paint under hood
08-30-2014, 12:25 PM
#1
Racer
Thread Starter
Bubbles in the paint under hood
I got some bubbles, under the hood in the black paint. I would guess its from the heat of the engine. I was thinking of sanding them lightly, and repainting that area. Would you suggest, black heat proof paint? or would just plain black spray paint, do the job?
08-30-2014, 12:30 PM
#2
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Did you have your hood open on a bright sunny day for a while
08-30-2014, 12:30 PM
#3
Race Director
Where at on the hood??
Could be heat from the bright sun reflecting off a chrome air cleaner lid, etc.or could be from oil or brake fluid contamination. If the latter, more than a repaint is needed.
Larry
08-30-2014, 12:38 PM
#4
Racer
Thread Starter
At the last car show, a guy came up to me, and suggested to close the hood, or turn the car to another angle. The chrome air cleaner was reflecting to the open hood, and might have caused this damage. He said, I was lucky, because he's seen some corvettes with bubbles on the top of the hood. I have about a dozen, quarter size bubbles that I was thinking of lightly sanding down, and repainting the whole underside again.
08-30-2014, 02:43 PM
#5
Drifting
Bubbles
Sand down lightly. Paint with Krylon 1613 INDUSTRIAL paint can. Always keep a t shirt or rag on your air cleaner. You will have to order paint online.
Boyan
Boyan
08-30-2014, 03:13 PM
#6
Racer
Thread Starter
in Semi Flat Black. The can doesn't show "Industrial" but has the
same last 4 digits. Would this be the same paint?
08-30-2014, 04:13 PM
#8
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Industrial "5-Ball" Krylon lacquer looks like this:
08-30-2014, 06:36 PM
#9
Racer
Thread Starter
08-30-2014, 08:04 PM
#11
Pro
I have the same issue,bubbles on bottom of hood and not from reflection off air cleaner. I think I used Krylon 1613 last time I painted the underside of the hood about 6 years ago. What is unique about the industrial 1613?
Is it more tolerant to heat than SEM equivalent?
Randy
Is it more tolerant to heat than SEM equivalent?
Randy
08-30-2014, 08:18 PM
#12
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The good old Krylon #1613 Semi-Flat LACQUER we've known for years was withdrawn from the retail sales channel (hardware and big-box stores, etc.) about four years ago and is now only sold through their industrial channel, as a "5-Ball" industrial product. It was replaced in the retail channel by another #51613, which is an entirely different formulation, higher gloss, and it's ENAMEL, not lacquer. 
08-31-2014, 03:29 PM
#13
Racer
Thread Starter
The good old Krylon #1613 Semi-Flat LACQUER we've known for years was withdrawn from the retail sales channel (hardware and big-box stores, etc.) about four years ago and is now only sold through their industrial channel, as a "5-Ball" industrial product. It was replaced in the retail channel by another #51613, which is an entirely different formulation, higher gloss, and it's ENAMEL, not lacquer.
08-31-2014, 03:45 PM
#14
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No, heat resistance has nothing to do with it - the retail enamel formula is the wrong gloss and sheen (too shiny), and won't match anything under the hood. You want the industrial "5-Ball" Semi-Flat LACQUER formulation - the only enamel paint on the whole car is on the outer face of the wheels.
08-31-2014, 03:57 PM
#15
Race Director
No, heat resistance has nothing to do with it - the retail enamel formula is the wrong gloss and sheen (too shiny), and won't match anything under the hood. You want the industrial "5-Ball" Semi-Flat LACQUER formulation - the only enamel paint on the whole car is on the outer face of the wheels.
Most folks find the lacquer temperature rating acceptable and not a problem.
Larry
08-31-2014, 10:17 PM
#16
Burning Brakes
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At the last car show, a guy came up to me, and suggested to close the hood, or turn the car to another angle. The chrome air cleaner was reflecting to the open hood, and might have caused this damage. He said, I was lucky, because he's seen some corvettes with bubbles on the top of the hood. I have about a dozen, quarter size bubbles that I was thinking of lightly sanding down, and repainting the whole underside again.
