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Author Topic: Spark plug thread repair question  (Read 556 times)

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CDXXVII

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Spark plug thread repair question
« on: January 04, 2024, 08:09:07 PM »
  

I am not familiar with this style thread repair. Was there a particular company that offered this repair? Seems like the original thread would have to be totally wiped and even then why would you go through the difficulty?
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Rory428

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Re: Spark plug thread repair question
« Reply #1 on: January 05, 2024, 06:03:31 PM »
Hard to tell in the photo, but is that the regular 18 mm FE sized insert, or a smaller 14 mm insert? Is it just 1, or all 8 done like that? I have had broken off FE valve cover, and exhaust manifold, bolts, and stripped out rocker stand bolts, but I have never seen a FE spark plug hole damaged.
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1978 Fairmont,FE 427 with 428 crank, 4 speed Jerico best of 9.972@132.54MPH 1.29 60 foot
1985 Mustang HB 331 SB Ford, 4 speed Jerico, best of 10.29@128 MPH 1.40 60 foot.
1974 F350 race car hauler 390 NP435 4 speed
1959 Ford Meteor 2 dr sedan. 428 Cobra Jet, 4 speed Toploader. 12.54@ 108 MPH

CDXXVII

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Re: Spark plug thread repair question
« Reply #2 on: January 05, 2024, 09:44:43 PM »
Thread is regular FE. Two of the 8 holes have it.
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