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09-14-2017, 08:16 PM | #1 |
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Join Date: May 2010
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Exhaust manifold rejuvenation
I have the heater exhaust manifold, that I'm getting an ear repaired,and I would like to clean up the rust, and paint it with por15 manifold paint.
What's a good recommendation for the rust removal prep work.? |
09-14-2017, 08:20 PM | #2 |
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Location: Alberta
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Re: Exhaust manifold rejuvenation
sand blasting. I just blasted mine today and painted them (intake and exhaust) and the clamp and bolts with POR manifold paint.
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09-14-2017, 09:35 PM | #3 |
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Re: Exhaust manifold rejuvenation
yup - cast iron has a crapton of pores that wire brushing will never get clean. Bring a bunch of stuff to the blaster to make it worth while.
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09-15-2017, 05:18 AM | #4 |
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Re: Exhaust manifold rejuvenation
Has anyone used CAST-BLAST paint? Vermins' has been "curing" for 3 years, I "think" it'll be OK!
Read of a Guy that SUPER HEATED his manifold, afterward, it showed LUMPS of LEAD or SOLDER like stuff all over it!!! "Wonder" what caused that????? Bill W.
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09-15-2017, 08:26 AM | #5 |
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Re: Exhaust manifold rejuvenation
The POR manifold paint has to be cured in the oven. 400 degrees for 4 hours. It's dry to the touch in a few minutes but will not perform properly unless oven cured.
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09-15-2017, 08:44 AM | #6 |
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Re: Exhaust manifold rejuvenation
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Don't force it with a little hammer tap, tap, tap get a bigger hammer tap done |
09-15-2017, 09:09 AM | #7 |
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Re: Exhaust manifold rejuvenation
Yes sandblasting will get all the rust out of the pores. Electrolysis would work well also
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09-15-2017, 11:34 AM | #8 |
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Re: Exhaust manifold rejuvenation
Sounds Great! However, what about the "Droop" or bend that manifolds acquire over time?This is where the manifold loses it's alignment with the last port and blows gaskets out. I think its usually at # 1 cylinder.
Terry |
09-16-2017, 06:34 PM | #9 | |
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Re: Exhaust manifold rejuvenation
Quote:
CRUSH a Viagra, mix it with water, brush it on the manifold, it "MAY" help Bill Usedtobedrooped
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09-16-2017, 07:14 PM | #10 |
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Re: Exhaust manifold rejuvenation
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09-16-2017, 08:05 PM | #11 |
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Re: Exhaust manifold rejuvenation
Bill - I use Cast Blast and like it.
First time I used it I cured it in the oven. Stunk the house up REALLY BAD! Very thankful my wife was out of town for a few days on a business trip. Won't do that again. Now I cure it by by evenly playing a torch over it until it gets good and hot.
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09-16-2017, 08:21 PM | #12 | |
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Re: Exhaust manifold rejuvenation
Quote:
Hmmmmm, just reading this and truing to figure out how it relates to Bill's suggestion of Viagra. Don't think I really want to know. |
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09-16-2017, 09:07 PM | #13 |
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Re: Exhaust manifold rejuvenation
Post number 4
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09-16-2017, 09:22 PM | #14 |
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Re: Exhaust manifold rejuvenation
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09-17-2017, 06:33 AM | #15 |
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Re: Exhaust manifold rejuvenation
Heater manifolds are much less likely to "droop" than stock, non-heater manifolds. All the heater manifolds I have are straight as an arrow across all the exhaust ports.
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