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> Bad day at cars & coffee, Big noise on the way home
80cap
post Oct 7 2017, 12:59 PM
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While leaving cars & coffee I heard a little back fire and a valve train noise on the driver side. Towed home and searched the cyber web and I determined that I experienced a dropped valve seat. I'll drop the engine tomorrow and pull both heads because I used a not so hot engine guy last time. I need to search out a good heads to purchase. I don't want to repeat the same mistake. Please feel free to make fun of me or suggest a good source for new heads. (IMG:style_emoticons/default/headbang.gif)
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TheCabinetmaker
post Oct 8 2017, 02:56 PM
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Might not want to blame the head builder yet (even though it could be his fault). Type 4 seats are notorious for falling out. Especially old heads. They repeatedly get too hot then cool off. The seats come loose from the heat and finally just fall out. Remember, your heads are probably 40 years old and have had thousands of heat cycles.
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DM_2000
post Oct 8 2017, 03:09 PM
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QUOTE(The Cabinetmaker @ Oct 8 2017, 04:56 PM) *

Might not want to blame the head builder yet (even though it could be his fault). Type 4 seats are notorious for falling out. Especially old heads. They repeatedly get too hot then cool off. The seats come loose from the heat and finally just fall out. Remember, your heads are probably 40 years old and have had thousands of heat cycles.



The question is, What should the head rebuilder have done to prevent a seat from coming out? ( Yes, I'm aware that you seem to be taking a middle ground here. )

If the rebuilder recommended new out of the box heads, I'm betting there would be those on this list saying he just wanted to make more $.

It's no wonder that some shops say no to older / odd engines.
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