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Old 03-06-2009, 07:22 AM
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Pinning a block

New here, so if this is in the wrong section, or has already been posted, please lock me on.
I was reading an article about pinning an engine block. Not something that I really think that I need to do, but would still like to know about it. Does anyone here know how to do it? Or is it something that you would have to take into a machine shop and have done? Also, is this something that would only realistically need to be done on a really high performance engine? Thanks in advance.

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Old 03-06-2009, 07:29 AM
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What is "pinning" a block? this usually refers to a type of repair to a damaged block.
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Old 03-06-2009, 07:49 AM
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Do you mean pinning the rocker arm studs for high lift cams or higher spring pressures?
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Old 03-06-2009, 07:58 AM
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Do you mean this http://locknstitch.com/
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Old 03-06-2009, 11:04 AM
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Do you mean "peening" a block, as in shotpeening?
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Old 03-06-2009, 11:30 AM
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You can also dowel pin the main bores so the caps don't move around as much.
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Old 03-06-2009, 11:41 AM
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This is what a block looks like pinned or lock and stitch like Carl Said
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Last edited by Rogers Performance; 03-06-2009 at 04:22 PM.
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Old 03-06-2009, 12:57 PM
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You can also dowel pin the main bores so the caps don't move around as much.

Kinda like a 4bolt but not as good?
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Old 03-07-2009, 01:34 AM
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Thanks for all the replies, but the kind of pinning that I heard about, and "pinning" may not be its actual name, refers to putting studs in around the cylinders in order to put them under stress. This is done to prevent the cylinders from going out of round. I also heard that it was common practice in nascar, but I don't know when that was. I've looked all over the internet, and can't seem to find much on it.
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Old 03-07-2009, 01:40 AM
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Was done years ago, especially the thin walled Ford Cleveland blocks, but isn't used nowadays
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