Re: For about the 10 th. & final time
The worry about breaking a jug is understandable. You're going to take it a step at a time and not make that mistake.
You've already got all the information you need. In post 28, you took a bolt and spun it in until it stopped, with the head on, then marked the shaft, correct? Your measurement is 1-1/2". Look in the IPL. The bolt dimensions for the 10 short bolts is 1-3/8". That makes perfect sense; they're spec'cing bolts which stop 1/8" below the bottom of the hole.
Another experiment you can do to gain confidence: you now know that the bolts are intended to not go all the way down. Take a small piece of wire, bend a right angle about 1/4" long in the end to make a feeler, with the head and gasket on, spin a bolt in, then stick the feeler up from the bottom. That will show how much hole is left, and tell you how close you are to your 1/8".
The bolt you used in post 28 looks like one of the end bolts, 2" long. The IPL specs the two end bolts, the long ones, at 2". If that really is a 2" bolt, it shouldn't need to be modified. Try the same sorts of things on the end; spin in with the head and gasket on (and include the spacer), and see how it sits. If you think it's still a bit too long, take 1/8" off it.
It's all doable. Just take your time, make sure each step makes sense before you do it, and it'll be fine.
'41 L (not running)
'52 L (not running)
'58 LI (not running)
'62 LI (not running)
'74 Comm 12
UFT Mountaineer 88E
3 parts/project tractors
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