Okay, so I'm new to the forums, but I can't seem to find an answer to this predicament I have found myself in. I recently purchased a 1983 KZ750 four shaft driven. Guy said he couldn't get it to run after it "started to sputter, and decided to clean the carbs." The carbs are the keihin cv34 which I cleaned in carb dip, after finding out that three of the boots were put in 45 degrees off so they didn't sit correctly... Fixed that, got it to run. Poorly. Hard to start, wouldn't idle, but warmed up and shifted gears well. Shut it off, next day I did a compression test. Frightening news. 1-4 90psi, 90, 30, 70. Put in a teaspoon of oil and did another test, jumped up to 120, 120, 50, 90. The book said to keep cranking, if the pressure steadily goes up, the cylinders need a rebuild. Well lucky me I didn't need a complete rebuild. Bad news, I tried to get a feeler gauge between the cam and the lifter, only to find out the reason why the engine has such poor compression is because the Prior owner installed shims that were TOO BIG. Knowing this, how do I get the proper shims in there? The smallest feeler gauge I have is 0.05mm and it wouldn't fit no matter what, the smallest the book says it could be is 0.08mm. Guess the valves aren't closing all the way, wouldn't you say? Should I buy shims that are half the size and then work my way up to the correct size?
