![]() ![]() ![]() What started out as a timing chain replacement ended up being a virtual rebuild, but it wasn't much more work, just more money for parts and machine work. And since the block was going to be torn down, it also made sense to lightly deck the block, creating a new surface to match the new head, bumping the compression (barely), and working with the stock pistons. I took advantage of the opportunity to get an Engnbldr head with bigger valves and hotter cam, an already planned mod. Since I was going that far, a light re-hone and new rings simply made sense (the cylinders are good - why not?). So now I was looking at a crank polish and new bearings. The aluminum got sucked into the oil pickup. Since we were pulling the pan anyway, and I had concerns about where those aluminum fragments went, Squishy suggested we pop a main to look at it. The PO let the chain go long enough that parts of the timing cover were broken off, and some pretty good grooves were cut into it. So, my DD needed a rear main seal (I H8oilleaks) so we pulled the motor to do the timing chain. You are saving (deferring, really) the cost of a headgasket- for why exactly? Headgaskets have a service life too, and when they go, ugly things can happen. If the timing cover is grooved or the small tab at the bottom is broken, simply clean out the pan and put on a new timing cover.Īs appealing as that is, it has always bothered me. In other words, leave the head on, pull the timing cover, pull the pan and clean out the broken guides and any other crap, and put it back together. Background: There is a lot of common wisdom that changing timing chains on a 22RE does not need to follow the FSM method, where the headgasket is replaced. ![]()
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