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Tool Talk Discussion Forum

Patch Exhaust Manifold??

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F100Panel

09-04-2004 14:04:38




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Have an 86 Ford F350 with 6.9 Diesel. Ford didn"t protect their engine compartments too well & like most Fords F series up here in the NorthEast, salt has wreaked havoc in the engine compartment. Have a 1 inch hole rusted through one of the exhaust manifolds.. Bought a nice set from down south/no salt & as I went to put"em on I see the headbolts & exhaust manifold bolts are rounded off from rust... Oooops. Have patched the hole several times with furnace cement which works well around town but one hi rpm trip down the hi-way & the concussion of the exhaust breaks up the furnace cement. JB Weld can"t take the temperature.. To change the manifolds at this point due to engine squeezed in there so tight I"d have to either pull the engine or the nose to get good access & I"m not to keen on doing either of those options. Anybody have an idea/source for a better patching material?

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Rauville

09-04-2004 20:26:53




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 Re: Patch Exhaust Manifold?? in reply to F100Panel, 09-04-2004 14:04:38  
Try this....from POR15 online catalog;

FIRESEAL 2000�

"For years we've been working on a product to repair cracks, pits or holes in exhaust manifolds, tailpipes, mufflers, or other components subjected to high temperatures while in use. Because replacement parts are often difficult or impossible to find, there is a real need for this type of product in the marketplace. FIRE SEAL 2000� is a single-component (no mixing required) ceramic and stainless steel-filled putty that is resistant to fuels, oils, and corrosives. After it is fully cured, it will withstand temperatures up to 2000� F. FIRE SEAL 2000� may be applied to rough-surfaced or sandblasted steel, stainless steel, or cast iron."


Link

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F100Panel

09-05-2004 02:50:35




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 Re: Patch Exhaust Manifold?? in reply to Rauville, 09-04-2004 20:26:53  
HEY!! THANK YOU!!!!! !!!! I think you hit the nail on the head!!! My main hobby is 53-56 F100 Fords with my "baby" being a 55 F100 Panel Truck, hence the screen name.. I have used POR15 products & they make GREAT stuff!!! Theres a POR15 Distributor in Bennington Vermont about 25 minutes from my house. About 4 minutes from the Hemmings Motor News/Gas Station/Gift Shop/FREE antique car display. My wife refers to it/Hemmings as "Mecca for car nuts".. THANKS!!!!

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F100Panel

09-06-2004 03:17:45




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 Re: Patch Exhaust Manifold?? in reply to F100Panel, 09-05-2004 02:50:35  
Will likely duplicate the same process as I did with the funace cement.. Wash the COLD manifold hole area with carberator cleaner, wire brush it & use metal screen over the hole to stop the patch material from falling in until it sets.. Kinda like the tape in sheetrock joints the metal screening reinforces the material... THANKS ALL!!!!



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arthur h

09-05-2004 16:29:04




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 Re: Patch Exhaust Manifold?? in reply to F100Panel, 09-05-2004 02:50:35  
try putting a flat strap on a bolt to slip into the hole then put a patch or large washer on out side and tighten with the patching material in between



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TheRealRon

09-05-2004 07:38:05




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 Re: Patch Exhaust Manifold?? in reply to F100Panel, 09-05-2004 02:50:35  
Before you buy it, get an answer from them on if it will fill a 1" hole. I've used ceramic putty before and it's intended for small cracks, to 1/4" or so.



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Nebraska Cowman

09-04-2004 17:40:13




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 Re: Patch Exhaust Manifold?? in reply to F100Panel, 09-04-2004 14:04:38  
i wondered about that as I have used furnace cement on tractor manifolds with good success. If you had some asbestos paper like from an old furnace maybe you could reinforce it with that.



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TheRealRon

09-04-2004 16:58:07




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 Re: Patch Exhaust Manifold?? in reply to F100Panel, 09-04-2004 14:04:38  
This is a good news/bad news deal. The good news is that the right welder can weld or even silver solder the manifold. The bad news is it has to come off... in which case you would be money ahead by just replacing it.



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Charles (in GA)

09-05-2004 17:04:27




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 Re: Patch Exhaust Manifold?? in reply to TheRealRon, 09-04-2004 16:58:07  
"Bought a nice set from down south/no salt & as I went to put"em on I see the headbolts & exhaust manifold bolts are rounded off from rust..."

" in which case you would be money ahead by just replacing it. "

I think that is what he initially planned on doing till he saw the "vise grip" bolt heads.

Charles



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Chester

09-05-2004 12:44:24




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 Re: Patch Exhaust Manifold?? in reply to TheRealRon, 09-04-2004 16:58:07  
If you can get at that manifold to drill and tap next to the hole you can cover over the hole with 16/18 Ga steel sheet after applying your furnace cement then screw it down. Can't get at it? Make that patch longer so you can wrap wire around it and tighten down it to the manifold. On my extended travels, I always bring along furnace cement, muffler clamps, and exh. pipe half shells (3 or 4" lengths ripped down the center) Although those roadside repairs are considered to be temp. a lot of them go on to be permanent as they work so well.

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