90xj06
NAXJA Forum User
- Location
- Peabody, MA
what would cause a fist sized hole in the side of the engine block? it was a 94 i6?
5-90 said:Yes - water doesn't compress, so something else has to give.
I've also had it happen (in my 1987XJ 4.0) due to an oil pump failure - there was significant heat damage to the big end of the #6 rod (the one that let go,) and a hole about big enough to put my fist thru resulted from the "explosion."
A new #6 rod, new crank and bearings, and new lifters (the pushrods were all still straight, and the rockers weren't cracked. I also dye-checked the other five rods...) and I put another 50K on that engine, before it wasn't sucking enough air to start anymore. I knew I should have done a re-ring while I was about it...
5-90
Matthew Currie said:Ok, I'll bite: what did you do about the hole?
Matthew Currie said:Ok, I'll bite: what did you do about the hole?
5-90 said:The piece was loose, not missing. I was able to remove it and apply a little VersaChem metal-bearing epoxy/cold weld compound.
I also dropped the pan and "welded" it from the inside as well - so the edge was sealed, the inside was sealed, and the outside was sealed. Since the hole was in the skirt about two inches above the oil sump rail, it worked neatly (and didn't leak!)
I probably won't use that block for anything I've got in mind, but the rest of it is still in good shape...
5-90
Matthew Currie said:I guess that's the diff between an Jeep and a VW, eh? That old magnesium-aluminum alloy was a little brittle. Past 40K miles on an "upright-fan" bus, you'd do well to carry a broom.