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  1. #16
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    stainless stretches that why head bolts are always steel

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  3. #17
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    Quote Originally Posted by Captain75 View Post
    Ok, so this one would be better? Btw I seldom use my boats in saltwater...
    Attachment 396838
    Not good enough. Quick Grainger search shows 75000 psi for those. Some 316 stuff is cold worked to get maybe 115000 psi but rare and expensive

    What is the problem with the stock bolts you need to avoid?

  4. #18
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    Quote Originally Posted by BarryStrawn View Post
    Not good enough. Quick Grainger search shows 75000 psi for those. Some 316 stuff is cold worked to get maybe 115000 psi but rare and expensive

    What is the problem with the stock bolts you need to avoid?
    I don’t want to stress and ruin the threads

  5. #19
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    If you just want to save any wear from running the bolts in and out then I know some people use the Dorman 675-094 which is zinc plated and easy to find as auto parts or Amazon, ebay, whatever. It only has 5/8 inch of threads on the block end. I don't know of any double ended stud off the shelf that engages all the threads. And don't know where you would find high strength stainless allthread or setscrews as a catalog item.


  6. #20
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    I will give these a try.
    Grade 8.
    Click image for larger version. 

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  7. #21
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    you need the opposite of that thread I would have thought

  8. #22
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    Quote Originally Posted by powerabout View Post
    you need the opposite of that thread I would have thought
    Doesn't exist as a stocked part. Or if you know of a supplier, please share the information.

  9. #23
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    Quote Originally Posted by powerabout View Post
    you need the opposite of that thread I would have thought
    Will give them a try. They still offer 16mm block engagement and If we are lucky, we can add a couple of threads...

  10. #24
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    Could probably use these, but then you will have to settle for coarse threads in both ends...
    Click image for larger version. 

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  12. #25
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    Set up studs.. never thought of looking at those, their usually 3/8, probably work fine... I just looked at msc industrial, they have some in 5/16 that are 2 1/2 long probably work good and they look like they have rolled threads and are made from stressproof steel which is very strong...I know they use that on bolt together hydraulic cylinders that have the long studs on the outside..Dave

  13. #26
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    I use McMaster all the time and have never been disappointed in the quality products they sell , I see their less expensive than the msc . opinion only but I would rather use coarse nuts than lower strength studs material..I see they also have grade 8 threaded rod too which is usually rolled.

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  15. #27
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    Agree that if black oxide coating is acceptable then the setup stud is better than the Dorman stud.

    And grade 8 threaded rod would be better than the setup studs if you don't mind doing the cuts.

  16. #28
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    Anyone tried reboring to use 3/8” / 10mm?
    seems to be enough meat!?

  17. #29
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    the F1 v8 is 3/8, same bolt pattern

  18. #30
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    Quote Originally Posted by powerabout View Post
    the F1 v8 is 3/8, same bolt pattern
    Ok, got it!
    I must say I’m a bit tempted, mainly because I’ve got a fair amount of high grade m10 studs/short rods...
    At the same time I’m a bit afraid of messing things up when boring.

    If, I should go ahead with the 3/8 or m10 Idea, I need to come up with a boring method that makes sense. I dont want to use the mill, since It takes so much time to set up the block.
    Last edited by Captain75; 01-26-2018 at 07:51 AM.

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