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Aluminum head bolt threads pulling out on Polaris engines is a fairly common problem. Installing a solid bushing-type steel insert is the best fix. Avoiding the expense of some of the larger kits designed for automotive applications is a smart way to save money and still get a quality repair. The larger Time-Sert kits, for example, are designed for doing repairs when the threads start down several inches. With threads flush or near the surface, a much less expensive kit made by Time-Sert can be …

We had a recent customer that asked this question.Question - I need a big sert for a 2000 Chevy Silverado 5.3 . Stripped insert already or damaged not tightening. Which kit do I need to fix the head bolt threads on a 2000 Silverado with a 5.3 for a second time repair when a Helicoil has failed? Answer - The oversize kit for a second time repair when a Helicoil has failed, on a 2000 Chevy Silverado with a 5.3 Liter which uses an M11x2.0 head bolt size is the 3700BS. For others …

Originally posted on our previous blog 10/10/13 DennisB WiseAutoTools.com © Summary: Cadillac NorthStar head bolt thread failures are common in 4.0 and 4.6 engines, from 1993 and up. Aluminum blocks which are very common these days are mostly to blame. But what’s the best repair? We look at the GM approved method compared to the Northstar Performance “stud” type repair kit, which has only been used on a relatively small number of vehicles. We looked into studs and question why Cadillac engi …