Pumpkin Pie - Blanca, 17Dec2012

After the high of getting "Patty" started last month, I spent the long Thanksgiving weekend tearing into "Selma", stripping her down and removing the cylinder head.  Let's just say it wasn't quite as clean inside as the port engine.  I knew I was in for something more "interesting" since I've never been able to turn the crankshaft with a wrench like I could on the other one.  So I was rewarded with some "pumpkin pie" rust in cylinder #2.

starboard bare blockstarboard bare block

pumpkin pie in cylinder 2pumpkin pie in cylinder 2

The head had issues as well-- cylinder #2's valves were sticking open.  The head and valves cleaned up ok with a liberal application of Marvel's Mystery Oil, PB-Blaster penetrating oil, Sea-Foam cleaner and elbow-grease.  The rusty cylinder walls cleaned up ok too, with oil and a touch of a cylinder honer to brighten them up.

But the crankshaft will only move a smidge.

 

stuck valvesstuck valvesI've used a pipe-wrench on the crankshaft, a crowbar on the ring-gear teeth and a dead-blow hammer and a 2x4 against the piston tops.  The shaft will only turn about one ring-gear tooth either way.

I've kept the cylinders doused with penetrating oil for almost a month now-- I even tried heating up motor oil to about 300 degrees and pouring it in cylinder 2 to try to use some temperature variation to "crack" through the rust and let in more penetrating oil to free up the rings.  No progress.

Cylinder #2 (which I am assuming is the problem) is at the bottom of its travel, so there's no room to pound it down-- the force would be applied directly to the connecting rod instead of turning the crankshaft.  Whacking away at the neighboring cylinder 3 (which should be turning the shaft) hasn't done any good.

When I haul away on the shaft with a pipe-wrench and move the shaft that one tooth of distance, I can see the pistons moving slightly, except for #2 and #5 which are both at the bottom of their stroke and wouldn't be moving much anyway.  <sigh>

Well, I'll just keep the cylinders wet with penetrating oil and wiggling that sucker until I lose patience or something breaks loose.  I've read stories elsewhere online of people waiting for months before having any success, so I guess I'll just try to stay patient.

Maybe I'll work on rebuilding some of the cabin down below in the meantime.

Happy Holidays!

Kirk