I have a 6� powerblock for my JD A, but it has a piece broken out of the back end of the sleeve on one side, and a quarter inch long crack in the skirt on one piston (both injuries occurred while removing the block from the tractor to replace a bad ring, which had to be done with the pistons in the block since they�re breach loaders � and I had a bit of a problem while lifting it out!). Not to worry: I put the stock block and pistons on it, and it�s running fine.
BUT, I�d like to get a little more hp out of it. I don�t really need a lot more, but even a little would help. However, I don�t have much cash to spend on it. I�m considering two options:1. Buying a set of gas pistons, either aftermarket or original. It�s currently got all-fuels in it, and I�m wondering if putting gas pistons in would give me a noticeable boost in power? Also, would it be cheaper to buy new or original gas pistons? 2. I imagine this is out of my price range, but another possibility is to have the powerblock resleeved. I could have it sleeved to fit the original pistons, and then try to find a replacement for the one with the crack in the skirt, but I�m wondering if it would be feasible to use pistons out of a gas G or a 70, and have it sleeved accordingly? Don�t know how those pistons are shaped � would they whack the ring at the top of the powerblock? Would the deck height be a problem? Any comments or suggestions would be appreciated.
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