Exhaust Manifolds - Team Camaro Tech
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post #1 of 6 (permalink) Old Jan 22nd, 09, 05:20 PM Thread Starter
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Exhaust Manifolds

My exhaust minofolds on my '69 396 are all rusted and wanted to ask how or if I can get them to look like new. Can I sand blast and paint? Who can do this work?

I know Jerry McNeish charges $350 to get them refinished....has anyone got them done through Jerry?

I also saw that I can replacement manifolds with correct casting numbers but I'm assuming it better to keep my original, right?

Thanks in advance.
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post #2 of 6 (permalink) Old Jan 22nd, 09, 06:43 PM
 
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Re: Exhaust Manifolds

Sure, just blast them easy and you are good to go.

I think Eastwood stills a decent high temp cast-iron colored paint?

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post #3 of 6 (permalink) Old Jan 23rd, 09, 04:43 AM
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Re: Exhaust Manifolds

It would be better to keep the OE's as they have been stress relieved with heat cycles.
New/replacement ones are not and later, they warp if not stress relieved.

You should be able to lay the manifold on a flat steel plate and see maybe 0.020" warpage max. Anything more and have them flattened, then coat them.

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post #4 of 6 (permalink) Old Jan 23rd, 09, 04:47 AM
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Re: Exhaust Manifolds

Sand blast and paint..take a straight edge to the mounting surface while they are off!
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post #5 of 6 (permalink) Old Jan 23rd, 09, 08:48 AM Thread Starter
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Re: Exhaust Manifolds

Thanks for the info. Can you guys help me out and be a little more discriptive in the process. So pull them off and sand blast and repaint if I understand correctly.

Can someone recommend a paint type and brand and color for stock appearance?

Not sure I understand the straight edge part. Is it to measure or determine if flat? Or do I need to bolt the manifolds to something so they stay true while off the heads?

Thanks
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post #6 of 6 (permalink) Old Jan 23rd, 09, 09:13 AM
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Re: Exhaust Manifolds

put a true straight edge across the mounting surfaces from one end to the other if they are warped you should see a gap between the straight edge and the manifold. They can be machined to correct it. It helps prevent them from leaking and possible cracking or breaking down the road from stressing them, from the pressure applied to bolt them tight.

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