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ARP studs pulled my threads

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  #11  
Old 04-10-2023, 06:35 AM
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  #12  
Old 04-10-2023, 07:25 AM
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Originally Posted by Tony Luna
Anyone have experience with these?

https://www.quantiserv.com/metal-sti...thread-repair/

Blind Full Torque threaded inserts. I like the blind aspect of them seeing as I’m close to water jackets. Wish I had kept my old block to drill through the holes and see how much metal is under the holes.

those are nice! anyone use them?
 
  #13  
Old 04-10-2023, 12:34 PM
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I think I'm going to go with Lock and Stich blind Full Torque inserts.


Kit comes with everything needed - especially the right angle drill fixture.

Overall length of the blind insert is 1.330".

OD of the inserts is 0.595"

Existing threaded blind holes in the block (7/16-14) are coming in at around 1.630".

I'm not concerned with the depth of the insert - plenty of room. What are everyone's thoughts on the OD - 0.595"?
 
  #14  
Old 04-10-2023, 06:34 PM
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Sorry to hear about the head bolt woes. This whole process is probably in my future if my motor ever decides to give it up. Reading about the inserts, it appears some can transfer the torque load laterally which I think might be bad in a rover block. Stress around the head bolts stock is suspect in cylinder wall cracks according to the JE blog post below.

The last word on Land Rover liner failures - I hope! - JE Robison Service - Bosch Car Service Specialists ? the blog
 
  #15  
Old 04-12-2023, 04:10 PM
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Found a better alternative to ARP head studs. Considerably more thread engagement.



 
  #16  
Old 04-12-2023, 11:52 PM
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Installing thread inserts in the 4 center holes (2 on each side) and going with the new, longer threads into block, studs.

Right angle drill fixture to ensure straight holes.



 
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  #17  
Old 04-13-2023, 11:29 AM
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Originally Posted by Tony Luna
Found a better alternative to ARP head studs. Considerably more thread engagement.


who makes these longer studs?
 
  #18  
Old 04-13-2023, 12:03 PM
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Be careful with the longer studs - they were made for a different version of the block you can do more damage. There was an issue with thread stripping on blocks that been skimmed where the studs ended up being too long as result of the skimming.
 
  #19  
Old 04-13-2023, 12:51 PM
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Originally Posted by Richard Gallant
Be careful with the longer studs - they were made for a different version of the block you can do more damage. There was an issue with thread stripping on blocks that been skimmed where the studs ended up being too long as result of the skimming.
Can you be more specific on the “do more damage”?
 
  #20  
Old 04-13-2023, 01:40 PM
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@Tony Luna Cracked blocks and stripped threads, it is old info back 6 or 7 years. I researched when I did my heads about 4 years ago. To be fair the recommended torques in that info were way stupid high too, sorry but I can not locate the info I found. If they are actually made for the Rover V8 you should be fine, as I recall a the issue was people sourcing Buick parts, which are not the same
 


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