[Vwdiesel] Bolt hole mania
scameron at compmore.net
Mon Feb 7 14:09:42 EST 2005
The head gasket job continues:
Having cleaned up the surfaces of the head and block, it's time to do the
The bolts that came out looked pretty crusty, so I went at the cleaning with
Ran a chase bolt in and out each by hand and discovered that some did not
want to permit bottoming. Filled all holes with solvent and left to soak.
Sucked out the solvent with the shop-vac and a trachor made of clear vinyl
tubing. got quite a bit of particulate stuff. (visible thru the tubing).
Ground a couple of slots in a head bolt wih the B&D and a thin cutting wheel.
Dipping in solvent for each hole, and rinsing after each, chased the threads
to the bottom of the holes. Sucked them dry again.
refilled with solvent and brushed the threads by using a cute little tooth
brush made by Butler G.U.M , with a bristle group about the size of a pencil
eraser (which I trimmed a bit shorter).
Screwed this in and out of each hole to clean the threads. Sucked them dry
again, lots more particulates.
Put in more solvent, sucked again, still getting particulates.
Looked in with a penlight, there's crud at the bottom of the holes.
Put in more solvent, using a long, flat blade screwdriver (3/16" blade),
scraped the bottom of the holes. sucked again. lots of junk, one piece
plugged the tube.
Refilled and sucked again twice until no more junk visible.
Chased all holes again and then flushed again, no more junk.
Now threads appear shiny inside the holes.
One more job before assembly.
Will chase each hole with a bolt sprayed with "fogging oil" Used to
winterize outboard motors.
Dont want the threads to be completely dry when the new bolts go in.
Will suck each again to be sure no oil puddles on the bottom.
I hope you will excuse my "anal" attitude about this job. Perhaps it's
because I endured prep and colonoscopy inspection last week. The doctor made
much of ensuring the hole was squeeky clean for that too.
More information about the Vwdiesel