Case 188 - again - question?

What kind of expense do these two machine shop jobs add up too?

Any casting poured at 1500 degrees celsius and cooled will have stress in it (like it doesn"t all cool/contract at the same rate. In the old days castings were rough-machined and then left to weather for months to allow the stress to "relieve" before final machining. Nowadays castings are produced more scientifically, but there will always be some stress in them. Now, remove a large part of that casting (leg out of bed)and it could have an effect through other parts of the casting. Only small movements are enough to affect thin walled bearings, which only have a minimal layer of bearing metal, and/or crankshaft alignment. That was not quite so important on a low revving engine with relatively huge clearances, but at 2400 rpm it is, especially if the engine has been computer designed so there is minimum "over-engineeering" incorporated anywhere in the design.
Hopes this explains it a bit.

Regards, RAB

I saw that you answered a question I osted on the Crawler Forum on YT.

I've been trying to figure out what to do with the broke 188 out of our 450. A replacement is going into the machine. I was wondering if a repair to the block and a rebuild is worth the trouble and expense. It took 2 years to find the replacement engine.

Spring is on it's way down here. I hope ya'll are getting some fine weather up there too. Take Care-

Mike