Posted by David Lampman on August 23, 2011 at 18:45:46 from (69.54.29.239):
Hi Guys, I've finished my block change/rebuild on my Super A. It's running great with no leaks, inside or out!! But during the build I ran into a snag that I thought you guys could help me clear up. When I went to install the sleeves that I took out of the original block into the new block, they were too small. So I had to use and reinstall the sleeves that were in the new block. The original block has the serial# 251069R1 (1948). The new block has the serial# 354898R1 (1954). When I was looking through the parts listing on this site I saw that there are serial number groups. Group 255418-310299 seems to be the most prevalent in the parts listing. As you can see, nether the old block or the replacement block fall into this serial# group. So how many different sleeve sizes and sleeve seal sizes are there? Is it one for pre 255418, one for 255418-310299 and one for above 310299? And what about the width of the sleeve seal groove? I bought new sleeve seals here on this site (they only offer one size sleeve seal)and they turned out to be O-rings that were WAY to narrow and I don't think they went deep enough into the groove either. I'm really confused about this one. I was able to solve my sleeve seal dilemma but that's a story for another post. What do you think? Dave
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