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By: Lock-n-stitch  09-12-2011
Keywords: Cylinder Heads, Metal Locking, Stitching Pins,

We manufacture and sell products covered under US Patent No. 5,417,532; US Patent No. 5,379,505; US Patent No. 5,499,892; US Patent No. 5,562,371; US Patent No. 5,944,303; US Patent No. 6,071,051; Australian Patent No. 684525; Russian Patent No. 2137581.   Additional US and international patents are pending.

These special stitching pins are used daily by hundreds of repair technicians around the world to perform engine block crack repairs and cylinder head crack repairs. Cylinder head repair to automotive and large industrial cylinder heads is a very large market for us. Sealing leaks and re-creating strength is very cost effective and reliable.

Our lock design can pull the crack together and create the highest possible amount of strength in the repair. Rather than making a hole pattern by chiseling like the method used in the old metal locking process, we utilize a high precision drill fixture to make the hole pattern completely by drilling, to receive the locks in order to assure the best and strongest possible repair.

We manufacture many styles including matching inserts for the Ford Triton 4.6, 5.4 and 6.8 engines. It is now possible to upgrade the entire engine to fully threaded spark plug holes if the cylinder heads are removed from the engine.  In-frame repairs can also be made with the same repair kit.  This is not a flimsy coil insert or another form of a common key locking insert with standard and incomplete external thread profile. Only Full-Torque thread replacement insert will add strength instead of removing strength of the surrounding metal. This is a product that will exceed your expectations.



Keywords: Cylinder Heads, Metal Locking, Stitching Pins,

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Because of the many different types of parts we've repaired, we have the ability to interlink thousands of individual experiences, successes and, yes, even some failures to develop methods, techniques and processes that work the first time - every time.