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Old 02-19-2008, 10:17 PM   #1
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Default New FM ceramic manifold and outlet casting

So my new parts came in today. The black looks cool, but seems to be non-uniformly applied. Anyway, I took some pictures of the inside of the manifold and the casting as there are some pretty rough casting marks in there. Should I bother cleaning it out or am I going to mess up the ceramic coating I just paid for?

http://picasaweb.google.com/marshameyer/FMCeramicParts
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Old 02-19-2008, 10:24 PM   #2
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i dont see how removing casting imperfections from the inside will hurt the coating on the outside...just get a wire brush in there, the one that goes on a grill and go town on it, it should be all you need
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Old 02-19-2008, 11:06 PM   #3
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Is it black, silver, or duck coated? Sorry, couldn't resist. I'd say hell yea clean up any obvious casting marks.
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Old 02-19-2008, 11:29 PM   #4
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but I thought the ceramic coating was on the inside and the outside? If not, there are some strange materials in the inside of this.
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Old 02-19-2008, 11:36 PM   #5
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its FMs secret recipe for duck stew

sorry, lol
its cast,there will be residue
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Old 02-19-2008, 11:39 PM   #6
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Some places coat inside, some coat outside, some coat both. The inside helps retain heat and transfer it's energy into the turbine, creating a quicker spool. Outside is all about keeping heat from the engine bay.

I'd just go ahead and clean it up. Sad that they left a rough casting and then coated over it.
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Old 02-19-2008, 11:43 PM   #7
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Quote:
Originally Posted by Splitime View Post
Some places coat inside, some coat outside, some coat both. The inside helps retain heat and transfer it's energy into the turbine, creating a quicker spool. Outside is all about keeping heat from the engine bay.
is this a fact? is there an actual noticable difference in spool or is this just a theory...thanks for the info split
if there is a noticable difference ill have my mani coated inside as well for sure
please do elaborate
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Old 02-19-2008, 11:54 PM   #8
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I know two places that refuse to coat the inside because of the risk of some of it flaking and going through the turbo. YMMV
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Old 02-19-2008, 11:56 PM   #9
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maybe this was my impression from the begi kit. Man, I wish I would have asked FM about this now :( I know the Begi kit is internally and externally coated. According to his book, it keeps more heat in the charge which theoretically spins the turbo faster since you have one more thermal medium for the heat to pass through. I don't know how much of an additional benefit it is, but it sounds cool. Well I guess I am going to have to wait until I get some time to clean this up before I mount it back on the car. I just wish this stuff would come ready to put on. You would think for $800 in parts they could get rid of the casting marks. Oh well, off to buy some attachments for my dremel!
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Old 02-20-2008, 12:08 AM   #10
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I bet its duck sauce.

Btw, I think there manifold looks cheap compared to Begis. Maybe its just me.
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Old 02-20-2008, 12:20 AM   #11
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FWIW there are several of casting imperfections in my BEGI manifold. I don't think it makes a difference in the grand scheme of things.
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Old 02-20-2008, 12:44 AM   #12
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I really like the look of the S4 manifold from Begi. I don't know if it actually does anything but that ram horn look is sweet.
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Old 02-20-2008, 12:53 AM   #13
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Quote:
Originally Posted by cjernigan View Post
I know two places that refuse to coat the inside because of the risk of some of it flaking and going through the turbo. YMMV
+1 I would be afraid, but then again i get startled by puppies
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Old 02-20-2008, 12:54 AM   #14
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Quote:
Originally Posted by posidon42 View Post
maybe this was my impression from the begi kit. Man, I wish I would have asked FM about this now :( I know the Begi kit is internally and externally coated. According to his book, it keeps more heat in the charge which theoretically spins the turbo faster since you have one more thermal medium for the heat to pass through. I don't know how much of an additional benefit it is, but it sounds cool.
BEGI does not have their manifolds coated internally, i just got mine last week. You can see the inside is not coated here, the only black ceramic on the inside is overspray. I am kind of disappointed they didn't tape the studs off. I'll clean them up before the install. Most places also tape off the flanges when coating. Atleast when i inquired about coatings in my area they taped them off to ensure there was no obstruction of the flat mating surface.


As for casting imperfections, my BEGI mani was cleaned up after it was cast, it has normal casting marks but the ports were cleaned up substantially.
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Old 02-20-2008, 12:59 AM   #15
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Yours is black?
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Old 02-20-2008, 01:07 AM   #16
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All ducks are black when you ask for them to be.
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Old 02-20-2008, 01:21 AM   #17
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My duck is silver...and is acting like a ceramic.
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Old 02-20-2008, 01:44 AM   #18
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alright, alright enough with the duck references... geez. My new manifold doesn't the mating surfaces coated but I think I am going to fix the inside casting marks this weekend.
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Old 02-20-2008, 05:13 AM   #19
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So they don't coat the inside of their parts, or clean up the casting flash inside either? yuck.
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Old 02-20-2008, 04:12 PM   #20
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i need to get my manifold and exhaust housing coated.
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