LNS Products Page
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.
, Metal Locking
, Stitching Pins