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I could possibly understand how "oil seepage" might be an issues where the manifold meets the "china walls" of the engine block if the surface was "too slippery". But at the intake/cylinder head interface, how could any kind of a sealing issue occur? You have a gasket, held in place by bolts and "crush compression" creating a mechanical seal.....
I could possibly understand how "oil seepage" might be an issues where the manifold meets the "china walls" of the engine block if the surface was "too slippery". But at the intake/cylinder head interface, how could any kind of a sealing issue occur? You have a gasket, held in place by bolts and "crush compression" creating a mechanical seal.....
Vacuum created by the intake ports of the head create a constant battle for the gasket to keep oil vapors in the lifter valley from entering into the cylinder. You show me an engine that burns oil, fouls plugs, but has new valvestem seals, new pistons rings and I will show you where the bottom of the intake gasket sealing failed, allowing oil vapor to enter the head. And I am afraid that with that "non-ordered" coating on any mating surface, a leak will occur. Wither its gas, oil or air.
But, some of you posters are missing the point. O.P. paid for a top notch job and got a half botched job. Its not what he ordered, its not acceptable. Its time for the shop to put their big boy pants on and fix the issue. Its NOT normal to coat any gasket mating surface or plenum.
Last edited by HeadsU.P.; Feb 4, 2019 at 04:59 PM.
OP didn't get written confirmation of job details; if OP sues he'll lose on that alone. Unless OP's Senor Quixote, perhaps he has bigger fish to fry.
No, job's not what OP expected & I'd like to see better. But it's not going to hurt a thing except maybe some pride. Pick your battles.
The first step in the PC process is to sandblast the piece to remove surface contaminants. That carb mating surface and plenum appears to look like sandblasted aluminum, not shiny powdercoat like the rest of the manifold. Are you sure that you're not looking at clean sandblasted aluminum?
OP didn't get written confirmation of job details; if OP sues he'll lose on that alone. Unless OP's Senor Quixote, perhaps he has bigger fish to fry.
No, job's not what OP expected & I'd like to see better. But it's not going to hurt a thing except maybe some pride. Pick your battles.
Its not about suing. No body said anything about suing. This is about getting what you paid your hard earned cash for. Its called moral obligation for the shop to make it right or face some bad mouthing against getting recommendations for future business and more customers. If they buy the O.P. a new manifold for a couple hundred, that's cheaper than lost future business. Word of mouth is everything in a small business.
Yeah, that manifold, designed and manufactured under the direction of one of the premier aftermarket suppliers, certainly has a "rough" finish....
Originally Posted by Tonio
The first step in the PC process is to sandblast the piece to remove surface contaminants. That carb mating surface and plenum appears to look like sandblasted aluminum, not shiny powdercoat like the rest of the manifold. Are you sure that you're not looking at clean sandblasted aluminum?
Good question! There's been a LOT of discussion/assumption going on here, based on one, less than detailed, picture.
Yup, I hear ya. Looking back at the original post, the owner says: looks like they coated the entire intake inside & out. Goes on to say they did tape it off, took pictures.
But for some reason they removed the tape. WHY? Who does this?
It boils down to two people at fault. Owner for not speaking up when paying and the coating applier. The intake is not right, it will never be right. The O.P needs to ask if this 100% coating job is normal procedure. I really doubt it.
I would not waste my time or my money in gaskets installing that poor craftsmanship and hoping for the best. If the shop refuses to compensate, then cut your losses and buy a new intake, never go back to that shop.
Zooming in, I see what looks like tape parting lines on the carb mounting surface outer edge.....doesn't look powder coated to me, but my wife says that I'm going blind. lol