[Vwdiesel] Hand lapping head --- ( hagar a lap ahead )

H.Hagar h_hagar at prcn.org
Sat May 8 11:04:18 EDT 2004


Pun intended.

Du to my age I keep saying that I only got a few laps left.

I did both   --- Head and block.

First make sure you have a can of Steel Blue.   for newbies that is ink
used by machinists ---love the smell.

Say we are dealing with a good head.     The most important tool is a
flat surface.---------if you have good ideas let us know.

Remember we a Lapping  --NOT correcting a twisted head..

To keep grit from getting to rings , I set all pistons same height and
covered the rings with an inch of Vaseline.      

Metal does flow under pressure and I found raised metal around headbolt
threads on block ---- I sanded it down.

The only regret I have --I did not de-glace cylinders. I intended to test the
Bon-Ami procedure  ---- only to find I could not get the stuff.

Will trade VW parts for a can of Bon-Ami scouring powder.

Engine works great ----no leaks found so far. 

About lapping -- if I machine a spindle for the rear wheels --I machine
the thread oversize --then fine valve lapping compound to get exact fit
on nut. (too fussy not needed)

Do a lappa doo dah.

Hagar.


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