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#79853 07/10/2007 8:33 PM | Joined: Jun 2007 Posts: 68 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2007 Posts: 68 | I have a question about the best way to fix a rusty intake Carburetor mounting surface that has some pitting in the casting so that I can obtain a good seal with the gasket between the
carb and intake manifold.
Can I use high temp RTV or JB weld and file down smooth or??????
Thanks in advance! | | |
#79854 07/10/2007 8:36 PM | Joined: Dec 2006 Posts: 720 'Bolter | | 'Bolter Joined: Dec 2006 Posts: 720 | If you can pull the studs a belt sander will do the job just fine.
Otherwise find a thick soft gasket (or make one) and put it under a spacer with the carb gasket & carb on top. If you still have issues use a little hi-temp to fill in the gaps. Just wanna keep the RTV away from the carb.
1956 GMC 370 dump " 'Tater "1970 VW Volksrod "the Black Bomber" 2007 Chevy Avalanche 2020 Jeep Cherokee Trailhawk, 2005 Harley Davidson FLHTCUI I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion! :P
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#79855 07/10/2007 9:41 PM | Joined: Jun 2007 Posts: 68 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2007 Posts: 68 | Thanks,
Not sure I can get studs out but
What grit sand paper did you use? 40?
This is on a 283 and I did not take a spacer of
the engine when I rebuilt the Carb am I suppose to have one?The base of the carb was mounted to the intake with only a gasket seperating it. | | |
#79856 07/11/2007 7:05 AM | Joined: Dec 2006 Posts: 720 'Bolter | | 'Bolter Joined: Dec 2006 Posts: 720 | Cant say for sure about the spacer, the few manifolds I have fiddled with had spacers, I'd assume to keep heat from the manifold from warming up the carb too much.
1956 GMC 370 dump " 'Tater "1970 VW Volksrod "the Black Bomber" 2007 Chevy Avalanche 2020 Jeep Cherokee Trailhawk, 2005 Harley Davidson FLHTCUI I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion! :P
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#79857 07/11/2007 1:25 PM | Joined: Mar 2006 Posts: 1,703 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 1,703 | I would not use anything rougher than 120 grit ...with 40 grit the scrathes themselves are in the .015 to .020 range , without my chart handy from work for exact reference ..it is at least that ...a 120 grit leaves abought .005 deep scrathes....an 150 grit is best at round .003 Thousandths.
Just a tip for a good seal after . | | |
#79858 07/11/2007 1:56 PM | Joined: Apr 2005 Posts: 275 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 275 | A product called Devcon is very good for metal repairs like this. It's basically an epoxy/powdered metal mix. I've used it quite sucessfully on irrigation pump housing reairs for water erosion. Very machinable using hand or power tools. Made in different formulas Stainless Steel, Cast Iron, etc.
Doug | | |
#79859 07/11/2007 2:32 PM | Joined: Jan 2005 Posts: 364 Shop Shark | | Shop Shark Joined: Jan 2005 Posts: 364 | I wouldn't be afraid of using JB Weld. Just spread very thin across the gasket surface (just enough to fill the pits) let it cure, and use a file to remove the excess. You're not dealing with compression or heat on the intake, so pretty much anything that will resist gas should work.
Keith
If it were easy they'd have grade schoolers doing it!
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#79860 07/11/2007 9:36 PM | Joined: Mar 2006 Posts: 72 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2006 Posts: 72 | I've used both Devcon and JB Weld and they should work great for this job. Just make sure the surface is clean before appling | | |
#79861 07/11/2007 9:52 PM | Joined: Feb 2007 Posts: 230 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 230 | I used JB weld. I was careful to put it on evenly and did not even grind it later. Still ok after years. | | |
#79862 07/11/2007 11:34 PM | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | JB weld and a file is how I have done it. | | |
#79863 07/11/2007 11:46 PM | Joined: Nov 2001 Posts: 1,517 'Bolter | | 'Bolter Joined: Nov 2001 Posts: 1,517 | JB Weld. Dont leave home without it. Every toolbox should have some. | | |
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