View Full Version : It ain't budged yet!

11-14-2009, 07:51 PM
The old rusty Oklahoma commercial tag on the back of this truck is a 1977. It might be that long since the engine has turned over. I have the clutch pedal wedged to the floor, the drive shaft out. The cylinders are full of a "witches brew" of PB Blaster, kerosene and Marvel mystery oil. It has sat for a day and a half with pressure on the wrench. Anybody ever strip one of these crankshaft bolts?


John Clary
Greer, SC
Life... is what happens as you are making plans.
SDC member since 1975

Dick Steinkamp
11-14-2009, 08:05 PM
I'm not sure the constant pressure on the crank is the answer. I've had better luck with "back and forth". Let it soak longer, then with a longer lever (breaker bar), try back and forth on the crank. If you can get it to move a hair in either direction, generally you can then get it to move a whole revolution.

Dick Steinkamp
Bellingham, WA
http://i706.photobucket.com/albums/ww63/dstnkmp/IMG_7215-1.jpg http://i706.photobucket.com/albums/ww63/dstnkmp/IMG_7216-1.jpg

11-14-2009, 08:21 PM
Yeah Dick, I did that(back and forth) some early on and the bolt started backing out. I might try a pry bar on the flywheel through the inspection hole. Just didn't want to crawl under the truck just yet.

11-14-2009, 08:22 PM
Don't expect a day and a half to do the trick.
You may also have greater leverage by using a pry-bar on the ring gear.
Counter-clockwise leverage on the crank bolt may only loosen the crank bolt.

WHOOPS! You beat me to your reply.[:I]

I had one that simply would not move. Finally, I pulled the heads, placed a block of wood on each piston and used the BFH on each one until movement started. That engine's been in my '51 for almost fifteen years and just loves to run the Interstate.

11-14-2009, 09:00 PM
This past summer I unstuck a 259, but I had to pull the heads. I removed the generator and the water pump manifold, and took off the crank pulley and harmonic balancer. I then drilled a pair of holes near the end of a 4' piece of angle iron so it fit an opposed pair of screws on the crank hub, and bolted that device securely to the crank hub. That gave me a solid handle with which to rock the engine. I still had to pull the heads, and use a scrap 259 piston and rod as a drift to hammer on the stuck piston, which was #7. Made a runner out of it.

Gord Richmond, within Weasel range of the Alberta Badlands

11-14-2009, 10:26 PM
Don't be standing near that chain if it should suddenly break loose!



11-14-2009, 10:30 PM
I seem to remember you posting about that Gord. I'll give this one a little more soak time. I like your method and might just try it. Except for one wire, the spark plug wires look factory. This old truck looks to have been a true work truck. I looks to have been pretty well beat up over the years but not "monkeyed" with. The old cracked spare even looks to be the original. I am just hoping the crank, rods, and pistons have not swapped positions somewhere internally.

11-14-2009, 11:45 PM
I'd be afraid of breaking the piston rings by applying too much force.

Brent's rootbeer racer.
MN iron ore...it does your body good.

11-15-2009, 12:28 AM
looks like fun John :) although it's unfortunate the the little elves and gremlins weren't able to get it turned over as a birthday gift ;)

11-15-2009, 08:11 AM
I tried everything I could think of for over 6 months on my stuck 1923 McLaughlin Buick engine, and finally decided to use Kroil. Within a couple of weeks she came loose. Turned out it was a pencil thin line of rust around two of the cylinders.

This guy advertises in Skinned Knuckles, but I have no knowledge on how well it does, but it is 100% guaranteed, whatever that means. www.enginerelease.com

1963 Avanti R2

11-15-2009, 08:31 AM
In the words of Obi Wan Kenobi: "Patience, Luke. Use the Force." :D

It's the watched-pot effect, John. It'll come. Give it time.


Clark in San Diego
'63 F2/Lark Standard

11-15-2009, 08:46 AM
I have always had better luck, pulling the starter and
using a pry bar, to bearly move, and then let set, and
try the other direction. Only trying for a little each
day. My choise of soaking oil is 50/50 trans. fluid
and acetone. works for me.

Tex E. Grier