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04-08-2021, 09:37 PM | #41 | |
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Re: How to repair damage to a deck
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04-09-2021, 05:36 AM | #42 |
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Re: How to repair damage to a deck
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04-09-2021, 07:20 AM | #43 |
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Re: How to repair damage to a deck
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04-09-2021, 08:22 AM | #44 |
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Re: How to repair damage to a deck
Mart >>>Ah. OK. Now I think I know how the damage occurred.>>>
Yeah. That makes more sense than trying to remove a stuck gasket with a saw or cutoff wheel. 8^) Jack E/NJ |
04-09-2021, 09:00 AM | #45 |
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Re: How to repair damage to a deck
I’m at the point of cutting the valve heads off on the couple valves that a could pry up.
I’ve been beating them up and down try to get them loose, soaking them. In frustration I got the recep saw out thinking I would have more control than a mini grinder. Took about 4 strokes to cause the damage. |
04-09-2021, 11:01 AM | #46 |
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Re: How to repair damage to a deck
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04-09-2021, 12:39 PM | #47 |
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Re: How to repair damage to a deck
I'd take it to a machine shop that's experienced in welding cast iron, and then have the deck milled just enough to clean the surface up.
Regardless of what filler material you use, you'll need to have it decked to ensure you don't have a low or high spot there that would prevent the gasket from sealing the combustion chamber.
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04-09-2021, 12:41 PM | #48 | |
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Re: How to repair damage to a deck
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04-09-2021, 04:25 PM | #49 | |
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Re: How to repair damage to a deck
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I never thought of a cutting torch in the valley. My little Cobra torch would probably work quite well. |
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04-09-2021, 06:29 PM | #50 |
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Re: How to repair damage to a deck
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04-09-2021, 07:05 PM | #51 | |
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Re: How to repair damage to a deck
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And as an additional vote of confidence to how great JB weld works some very fast Bonneville records have been set using the stuff in the area of combustion chambers. Oh heck yea some Bonneville records lord knows someone hates seeing this. The speeds of 224, 225, and 229 MPH Your slight amount of damage only needs to be filled with the epoxy material no need for any drilling or additional trauma to the casting surface. To make the surface of the epoxy flat to match the block deck you can use a single edge razor blade. As long as the razor outer edges remain on top of the block deck surface this becomes the height gauge. Now as you slowly trim the epoxy height this will be a perfect guide for leveling the epoxy to the exact height of the block. No additional decking is needed once you have the epoxy leveled. The second point I would like to caution you on be very careful using a cutting torch in the valley area of the block. The casting behind those valve springs is not thick its rather thin. Any excess heat from a torch can and at times will cause cracking which will end up being a water leak. So be very careful. Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH Last edited by Ronnieroadster; 04-09-2021 at 07:17 PM. |
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04-10-2021, 09:03 AM | #52 |
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Re: How to repair damage to a deck
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04-10-2021, 12:39 PM | #53 |
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Re: How to repair damage to a deck
Interesting Ronnie. Did you JB only the flat surface that mates with the block? How far inside the fire ring did you go? Any photos to share? Was it the slow set JB? Especially, I would love to see post run disassembly photos.
This fully supports durability on unexposed areas shrouded by gasket material, but im still not convinced of inside the fire ring durability. I want to believe, but still not convinced. Marco39, I have a hate relationship with sawzalls. I just hit the side of the spring and valve. Never had any problem. It is wise to alert your neighbors, because it will be smokey! Lindsay, is that damage near an intake or exhaust valve? Last edited by Russ/40; 04-10-2021 at 12:44 PM. |
04-10-2021, 02:01 PM | #54 | |
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Re: How to repair damage to a deck
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I have a 20 year old can of Lab-Metal never opened with a 2 year life span, probably should turf it. JB weld make a 1000f extreme temp epoxy. Thanks to everybody for all your help. |
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04-10-2021, 04:02 PM | #55 | |
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Re: How to repair damage to a deck
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Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
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04-10-2021, 05:59 PM | #56 |
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Re: How to repair damage to a deck
I'd expect that, even though Lindsay's slip-o'-the-saw extends into the combustion chamber, the actual flamefront at the hot end shouldn't penetrate too far and/or too fast because the gouge is plugged with epoxy at the cool end. I think even low temp epoxy would also work even if near the exhaust valve. Jack E/NJ
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04-10-2021, 07:29 PM | #57 |
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Re: How to repair damage to a deck
Google Belzona , it’s superior but expensive
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04-11-2021, 11:52 AM | #58 |
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Re: How to repair damage to a deck
It's beginning to look like an epoxy solution. If it flows like the slow set JB, I would be more satisfied about a good mechanical bond. Great that it's at an intake valve. Heat is not likely going to be a problem, it's the bond that will matter.
I'm disappointed JWL never commented. I would consider his opinion to be gospel. |
04-11-2021, 11:56 AM | #59 | |
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Re: How to repair damage to a deck
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Read again jwl had a comment R |
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04-11-2021, 05:18 PM | #60 |
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Re: How to repair damage to a deck
He just asked for a photo.........no suggested solution.
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