How mildly amusingly sarcastic but I that's typical of you . No, I am looking at the photo he posted but can not see enough detail to say it is "toast", however, your computer screen may be bigger than mine, and if you are basing your decision that it needs a sleeve on what you are calling mushroomed areas, imo it would be better to explain that to him and he could then look at that area closely since it will be in 3 dimensions so he can see it far better than we can and make that determination for himself.Originally Posted by yaegerb
Also, even if it has indentations/mushrooms in 4 corners, it in no way automatically means that it is junk . The fact is that if the top ring does not reach the indentations and they are outside of the gasket sealing area, it will be perfectly fine . In fact, there are many engines that have reliefs in the cylinder walls that are put there by the factory to increase air flow by "unshrouding" the intake valve.
Here is a photo I took last week of my stock 1965 396/427 Chevy block . These reliefs extend down into the cylinder around 1/4" below the deck . I have also put these reliefs in some blocks that didn't come with them when I used extremely large valves on them did the same on some that came with extremely large valves like a 1969 BOSS 302 which comes with a massive 2 1/4" valve but the cylinder bore is only 4", however, before adding reliefs to a block that did not come with them I have it sonic checked for thickness first to see how much of a relief I can put in it.
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PREVIOUS KAWASAKI INTERNATIONAL R & D PROJECT ENGINEER AND ATV DEPARTMENT SUPERVISOR
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