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  1. #1
    Join Date
    Oct 2019
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    6

    AFR head corrosion question

    I'm considering buying a used set of bbc cnc 315cc ported AFR heads. I found an awesome deal but the heads came off a boat and one coolant port corroded to the point it compromised the fire ring. Do you guys have any advice on fixing these? Do you think I could mill past the damage? Will the internal passage corrosion be an issue? I haven't seen these in person, but from the last photo, it appears the leaking port may have some core shift closer to the cylinder as well.... Thanks in advance guys!
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  2. #2
    Join Date
    Sep 2004
    Location
    Arizona
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    I would run. The money you will spend repairing these heads will be better spent on a good set of heads. Can they be repaired? Sure, is it worth the time and trouble, not as long as there are other heads to be had.....add up the cost of these plus 20 hours of shop labor, you can probably buy a new set.

  3. #3
    Join Date
    Oct 2019
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    6
    Quote Originally Posted by oleyeller View Post
    I would run. The money you will spend repairing these heads will be better spent on a good set of heads. Can they be repaired? Sure, is it worth the time and trouble, not as long as there are other heads to be had.....add up the cost of these plus 20 hours of shop labor, you can probably buy a new set.
    Thank you for the advice! You don't think I can get away with just milling them? A new set is about 4K and he will sell me these for 1500....

  4. #4
    Join Date
    Jun 2001
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    Los Angeles
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    Why not send the photos to AFR requesting if they can be repaired + an estimate.

    IMO, I'm not liking some of the depth of corrosion surrounding the chambers. The corrosion is always deeper than what it appears.
    VaporWorx. We Give You Gas http://www.vaporworx.com

  5. #5
    Join Date
    Sep 2004
    Location
    Arizona
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    206
    If the corrosion that you can see externally is concerning, what about the corrosion that you cannot see inside the casting? All the external stuff could be weld repaired and re machined assuming it could be cleaned enough to weld. But the inside stuff is the unknown.

  6. #6
    Join Date
    Oct 2019
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    6
    Quote Originally Posted by oleyeller View Post
    If the corrosion that you can see externally is concerning, what about the corrosion that you cannot see inside the casting? All the external stuff could be weld repaired and re machined assuming it could be cleaned enough to weld. But the inside stuff is the unknown.
    All good points. With the cost+repair+the headache of it possibly not working anyway.... I'm thinking it's not worth the gamble. Thank you guys, I really appreciate the insight!


  7. #7
    Join Date
    Jun 2010
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    Quote Originally Posted by Irish1886 View Post
    All good points. With the cost+repair+the headache of it possibly not working anyway.... I'm thinking it's not worth the gamble. Thank you guys, I really appreciate the insight!

    must be a reason the seller is off loading them...
    1970 Camaro/DSE build


    Are you driver enough? Maybe....come on blue!
    https://www.pro-touring.com/threads/...71#post1147371



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