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St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21-'22-'23-'24
Cast blast paint for exhaust manifolds
Did a forum search for what paint would look good on my drive shaft and half shafts, and Seymour Cast Blast seems to get a lot of votes. I'll get some.
Then, as a separate project, I'm looking at their high temp stuff which I could put on the exhaust manifolds. But they say it needs to bake at 400 degrees for at least 2 hours. I have a patient, understanding wife, but I'm not THAT stupid! What do you guys do for stuff like that?
Hi-Temp Cast Blast is the way to go. I've used it on at least a dozen cars with no complaints. I just let the heat from firing up the engine cure it. Here's a pic of my 65 BB after curing the exhaust. The manifolds on my 60, that I did 30+ years ago with Cast Blast, still look just like this.
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21-'22-'23-'24
I should add I'm a long way from firing the engine, have not even torn it down yet. Trying to get ahead of the game by doing the manifolds and setting them on a shelf. I guess finding some hot rod guy with a kitchen oven in the shop is the best option. Or maybe browse CL for one of my own but that seems like overkill for something I won't do very often.
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All high temp paints should be control heat cured prior to using in anger. They will last significantly longer.
if you have the room, I bought an electric oven from Craig’s list for $25 because only one of the stove burners worked. He even delivered it to my house. I use the oven to cure powder coating, high temp paint, and to clean parts (it’s amazing how well ez off oven cleaner works on greasy parts when you have a little heat). Prior to that I had a toaster oven I got for a few bucks at a yard sale. You might luck out and find a toaster oven big enough for your manifolds. They work great for curing high temp paint, just make sure you preheat them first.
I used Seymour Cast Blast, and cured them in the bbq grill, with the outer burners on only, and the manifolds in the center. I figured the thermometer in the hood was close enough. I think they came out looking pretty good, but I haven't run them yet.
I used Seymour Cast Blast, and cured them in the bbq grill, with the outer burners on only, and the manifolds in the center. I figured the thermometer in the hood was close enough. I think they came out looking pretty good, but I haven't run them yet.
Long story short, these were Jet Hot coated years ago, but in a color that was way too silver. I sandblasted them just enough to give the surface some "tooth", then I painted them.
You are talking about pre-heating the oven, not the work product, correct?
Yes, preheat the oven and ensure it is fully warmed up. Otherwise, you can get hot spots in the oven as it heats on full high which can burn your coating. Even the POR coating should be heated between 300 and 400 degrees for about 20 minutes, then turn the oven off and let the part sit in there until the temp returns to room temp. DON’T use the wife’s kitchen stove unless you want a big fight and chemical tastes in your food for a month or so.
Did a forum search for what paint would look good on my drive shaft and half shafts, and Seymour Cast Blast seems to get a lot of votes. I'll get some.
Then, as a separate project, I'm looking at their high temp stuff which I could put on the exhaust manifolds. But they say it needs to bake at 400 degrees for at least 2 hours. I have a patient, understanding wife, but I'm not THAT stupid! What do you guys do for stuff like that?
I prefer the brush on for irregular objects
Sandblasted first
I just did the exhaust for my 66 bb and was pleased with the way they turned out. I have used this before with good results. I like the brush on so you can get in tight places without runs.
I just did the exhaust for my 66 bb and was pleased with the way they turned out. I have used this before with good results. I like the brush on so you can get in tight places without runs.
I forgot to mention. You don't need to bake it. Engine heat cures it.
07-30-2018, 07:39 PM
Cast blast paint for exhaust manifolds
What do you guys do for stuff like that?
