Blog

WiseAutoTools.com © Summary: The image above is for the ES72220 replacement head bolts available at O'Reilly Auto Parts, we have the best thread repair kits. If your Chevy engine uses this size bolts, the thread repair kits we sell to fix threads in the block are the M11x2.0 3700 (or 3700BS) and M8x1.25 1812CORE-PLATE. For M12x1.75 we have the 42385-50 head bolt thread repair kit. More on this below. LS engines with stripped threads can be repaired with Time Sert kits for the b …

DennisB WiseAutoTools.com © Summary: We are commonly asked about the differences in Time Sert and Heli Coil brand thread repair kits. In this article we cover ten main differences between these two brands. First, I will say that they have some things in common. Both brands have a large selection of sizes available. Both can be used to fix threads that have been damaged from cross-threading, over-tightening or vibration due to being too loose. Both brands have been around for a long time …

WiseAutoTools.com © Summary: This article covers several options for repairing stripped threads for oil and transmission (Primary or Secondary) drain plugs on Harley Davidson motorcycles. Harley Davidson motorcycles obviously vibrate a lot which may lead to the drain plugs loosening over time. If they loosen up any, thread deterioration may occur. Aluminum threads can also get damaged and stretched if drain plugs are overtightened a little.  It does not matter if it’s a Harle …

WiseAutoTools.com © Summary: Repair kits available for Chevrolet LS engines which have failed head bolt threads. Sizes include the M11x2.0 for the larger holes and M8x1.25 kit for the smaller M8x1.25. Failed threads in aluminum engines are a common problem today. Time Sert has been making head bolt thread repair solutions for GM for a long time. The Cadillac Northstar engine was one of the first engines that suffered from failed aluminum threads for their head bolts. GM and Time Sert engine …

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 …