Re: hairline crack in block....help!

Posted by Highlander160 On 2016/10/15 14:13:36

Might be able to lace it. Similar to pinning, you get the smallest cast iron plugs you can find. Drill and tap a single hole and thread the new plug in place leaving some measure above the surface. That gets ground down flat and becomes part of the block. The next hole goes about 1/3 or more into that 1st plug and you do it again, and again, and again until the crack has been completely plugged/laced. At that point a new vale seat and sleeve and let it eat. Just for peace of mind, once it's all done get a proven quality block sealant and add it to the 1st fill of coolant just for an extra measure of protection. Many an old block has gone 10s of thousands of miles with such a repair. Your results may vary, tax n title extra, void where prohibited, no purchase necessary, see your retailer for details...