mookaloid
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| posted on 7/12/14 at 05:46 PM |
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unf thread insert
Just trying to get my head round this, I'm making a coffee table out of a rover v8 bock with the rods/pistons bolted to the block face to hold
the glass.
I can use the threaded holes where the head bolts go in which are 7/16 unf as far as I can tell.
obviously the big end bolt holes are smaller than that ( 3/8"? ) so I thought I could put thread inserts in the holes then use allen bolts
though the big bolt holes to secure them. I think that describes things 
So would any kind person please be able to tell me what size thread inserts and bolts would work?
Cheers
Mark
"That thing you're thinking - it wont be that."
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daviep
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| posted on 7/12/14 at 06:13 PM |
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I can't really follow your description but I think you are doing the same as this
Simplest solution would be to bore out the con rod from 3/8" to 7/16" it's less than 2mm bigger so there should be enough meat on
the rod. You could then use 7/16" unf cap screw.
If you don't want to bore the rod then I would make a stepped stud with one half 7/16" unf and the other half any thread that suited you
for example m8.
Cheers
Davie
“A truly great library contains something in it to offend everyone.”
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mookaloid
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| posted on 7/12/14 at 06:47 PM |
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Yes indeed that is the desired effect
"That thing you're thinking - it wont be that."
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bi22le
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| posted on 7/12/14 at 08:35 PM |
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quote:
Originally posted by daviep
I can't really follow your description but I think you are doing the same as this
Simplest solution would be to bore out the con rod from 3/8" to 7/16" it's less than 2mm bigger so there should be enough meat on
the rod. You could then use 7/16" unf cap screw.
If you don't want to bore the rod then I would make a stepped stud with one half 7/16" unf and the other half any thread that suited you
for example m8.
Cheers
Davie
That is trick!!
Track days ARE the best thing since sliced bread, until I get a supercharger that is!
Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1
Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I
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Oddified
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| posted on 7/12/14 at 11:22 PM |
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I like that, but if your going to use the original threads they're unc.
Ian
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mookaloid
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| posted on 7/12/14 at 11:27 PM |
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quote:
Originally posted by Oddified
I like that, but if your going to use the original threads they're unc.
Ian
That's the kind of useful info I am looking for
"That thing you're thinking - it wont be that."
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mookaloid
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| posted on 7/12/14 at 11:32 PM |
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Just thinking, I could make some hybrid studs by cutting the lower (threaded) part of the head bolts and welding them to thinner threaded bar which I
can then pop the con rods onto and use a suitable nut.
Sound like a plan?
"That thing you're thinking - it wont be that."
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daviep
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| posted on 8/12/14 at 12:21 PM |
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quote:
Originally posted by mookaloid
Just thinking, I could make some hybrid studs by cutting the lower (threaded) part of the head bolts and welding them to thinner threaded bar which I
can then pop the con rods onto and use a suitable nut.
Sound like a plan?
Sounds like a good plan, that's why I suggested it!
quote:
Originally posted by daviep
If you don't want to bore the rod then I would make a stepped stud with one half 7/16" unf and the other half any thread that suited you
for example m8.
Cheers
Davie
“A truly great library contains something in it to offend everyone.”
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mookaloid
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| posted on 8/12/14 at 01:05 PM |
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quote:
Originally posted by daviep
quote:
Originally posted by mookaloid
Just thinking, I could make some hybrid studs by cutting the lower (threaded) part of the head bolts and welding them to thinner threaded bar which I
can then pop the con rods onto and use a suitable nut.
Sound like a plan?
Sounds like a good plan, that's why I suggested it!
quote:
Originally posted by daviep
If you don't want to bore the rod then I would make a stepped stud with one half 7/16" unf and the other half any thread that suited you
for example m8.
Cheers
Davie
You did indeed Davie, I only just realised how I could make a stepped stud
"That thing you're thinking - it wont be that."
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