slownrusty Posted July 21, 2006 Share Posted July 21, 2006 Guys - As you know I am building my 145000miler stock bottom end with the goodies from my previous posts. I have cleaned the deck of the block and was curious to find how straight flat it is. I went out and borrowed a steel flat edge and also bought a thin sheet of glass from the Hardware Store also as a double check. Well the flat edge does not appear to be all that "flat", it was pretty funny I was checking it against all the mirrors in the house to make sure! Then the sheet of glass is too lighweight and once I stick my feeler gauge under it, the gauge is so flat itself (I started at 2thou) it was like a wedge between the block and the the sheet of glass. My only guess is to get a heavy-ish sheet of steel about the same length of the block and machine it perfectly flat and use that? Personally I think the block is fine as my compression is even and high across all 6 but wanted to double check. Any recomendations? Yasin Quote Link to comment Share on other sites More sharing options...
spdkilz02 Posted July 21, 2006 Share Posted July 21, 2006 i guess sometimes i do things the way that will cost me more money. i would just take to a machine shop and have them check to make sure its flat. ya it will cost more money, but why cut corners when doing something like this. Quote Link to comment Share on other sites More sharing options...
olie05 Posted July 21, 2006 Share Posted July 21, 2006 a precision straight edge is what you need. http://cgi.ebay.com/L-S-Starrett-precision-straight-edge-385-36-NEW_W0QQitemZ290008487910QQihZ019QQcategoryZ12581QQssPageNameZWDVWQQrdZ1QQcmdZViewItem something like that perhaps? Quote Link to comment Share on other sites More sharing options...
Darrel Posted July 24, 2006 Share Posted July 24, 2006 Precision straight edge is the answer. Glass isn't straight at all. You may not see them but glass has a lot of waves. Quote Link to comment Share on other sites More sharing options...
Cody 82 ZXT Posted July 24, 2006 Share Posted July 24, 2006 When I had my head cleaned up I took it to the machine shop and the guy just pulled his straight edge out and checked it for me like it was nothing. I can't remember if your having head work done or not but, if not then this might be a good time for a valve job and you could have it all checked at the same time. Seems like I didn't spend alot on mine when it was done. Quote Link to comment Share on other sites More sharing options...
slownrusty Posted July 24, 2006 Author Share Posted July 24, 2006 Well guys my machinist was kind enough to let me borrow his perfectly machined straight edge and I brought it home and checked things out - all is good! Thanks for the replies. Yasin Quote Link to comment Share on other sites More sharing options...
Scottie-GNZ Posted July 24, 2006 Share Posted July 24, 2006 Just had to do this since my engine overheated badly. I also used a precision straight-edge making sure I check the deck and heads at every conceivable angle. Quote Link to comment Share on other sites More sharing options...
z-ya Posted July 24, 2006 Share Posted July 24, 2006 You can also clean the head and block of any gasket material, place the head on the block, and then use a feeler gauge to check for clearance. Check all around the head. if you can't get a .003" or .004" gauge in there, the head and block mating surfaces are probably OK. Quote Link to comment Share on other sites More sharing options...
slownrusty Posted July 25, 2006 Author Share Posted July 25, 2006 You can also clean the head and block of any gasket material, place the head on the block, and then use a feeler gauge to check for clearance. Check all around the head. if you can't get a .003" or .004" gauge in there, the head and block mating surfaces are probably OK. Good point Pete! Thanks! Scottie what do you mean you overheated? Yasin Quote Link to comment Share on other sites More sharing options...
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