The idea of the JB Weld is not to glue the o-rings in, but to smooth the ramp so the pits in the ramp do not cut the o-rings. If you put the sleeves in before the JB Weld is hardened, you still risk cutting the o-rings. Let it harden, then sand it down to match the profile of the ramp. Cleanliness is key to a good bond, but usually the pits don't go below the line where the o-ring seals. In the rare case where that occurs the JB Weld needs to stay in place, but mostly it just needs to stay long enough to get the o-rings in place. In all the years I repaired blocks with this method, I never had a coolant leak. YMMV. Machining out the old ramp and pressing in a new ramp still leaves the possibility of a leak between the block and the new pressed in ramp (although very rare, I'm sure). So I guess it boils down to how much you want to spend.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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