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08-30-2017, 09:39 AM | #1 |
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Location: Southeast Mo
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Junk or repairable?
I bought these old 59A style Sharp heads and after blasting one, I see that I may have bought some nice wall art. What do you guys think?
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08-30-2017, 09:59 AM | #2 |
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Re: Junk or repairable?
Looks like you are correct.
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08-30-2017, 10:04 AM | #3 |
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Re: Junk or repairable?
I was going to offer some encouraging advice until I blew the pictures up; now, not so much.
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08-30-2017, 10:12 AM | #4 |
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Re: Junk or repairable?
I prefer cast iron heads. Better performance, less maintenance and troubles. Unless you're going for the aluminum look.
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08-30-2017, 10:14 AM | #5 |
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Re: Junk or repairable?
Looks like it was poor casting from the get-go.
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08-30-2017, 10:33 AM | #6 |
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Re: Junk or repairable?
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08-30-2017, 12:30 PM | #7 | |
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Re: Junk or repairable?
Quote:
A lot of 'cracks' going on in just the two pics that you show. I would alum weld up the wear/oxidation or JB, but those cracks would stop me until after thorough check...for more cracks. |
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08-30-2017, 02:38 PM | #8 |
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Location: Southeast Mo
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Re: Junk or repairable?
These are the only ones I find on this head. I'll blast the other one this evening and check it out. I have an oven and a tig as well as a mill, so I'll probably give it a go anyway. The heavy corrosion will be an issue I'm sure. They were cheap and now I see why. Lol. I'll take pics as I go just in case I'm able to pull it off. Thanks for the replies.
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08-30-2017, 04:46 PM | #9 |
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Re: Junk or repairable?
drill a 1/8 hole st the end of each crack. The one the corrosion won't hurt anything, but afterblasting fill with JB weld. Torque heads at 45 ft/lbs through 3 heat cycles. Might consider setting pidyon to head clearance to 40/50 thou. Good luck
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08-30-2017, 05:08 PM | #10 |
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Re: Junk or repairable?
I would fix em. Now, after saying that, I will also add the fact that welding on old heads can REALLY be frustrating.
Looks like some windows from the top side might be needed. |
08-31-2017, 09:35 PM | #11 |
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Re: Junk or repairable?
You might be better off getting better heads at lower higher initial cost than trying to repair those.
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08-31-2017, 11:30 PM | #12 |
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Re: Junk or repairable?
When blasting Aluminum. Need to be real careful around type of casted parts
Vic |
09-01-2017, 07:29 AM | #13 |
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Re: Junk or repairable?
Repairing the corrosion with JB weld. For the crack I would put an aluminum tube in each of the bolt holes A good source for aluminum tubing is available in short lengths from Aircraft Specialty Spruce this type of repair I have done with good results using material from them. For a tubing size use 1/2 inch outside diameter with a 7/16 inside diameter locktite applied to the tubing will help seal the crack and I bet you will be able to use the head with out any welding or special work other than a drill press. If the crack is seen on the top of the head then thats another problem where only careful welding will posibly save the head.
Ronnieroadster |
09-01-2017, 07:30 AM | #14 |
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Re: Junk or repairable?
I think the first pic shows a casting flaw that does not hurt anything. The second pic shows a crack but again, I don't think it hurts anything. I would run them and see. All you are risking is a pair of head gaskets. I would be interested if you decide to sell them.
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09-01-2017, 07:48 AM | #15 | |
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Re: Junk or repairable?
Quote:
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09-01-2017, 08:03 AM | #16 | |
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Re: Junk or repairable?
Quote:
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09-01-2017, 09:26 AM | #17 |
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Re: Junk or repairable?
I did the "Aluminum Tube Trick" on the Edmunds heads on my '51. It was not so much to repair anything but to allow the heads to be located more precisely. I think it would also make a good repair. I used 7/16" ID - 1/2" OD tube from a place called "Online Metals". So far, so good.
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