[Vwdiesel] honing

[Gary, Orlando]

Ken,
With all new rings, the cylinders should get a new hone. I used a
standard 3-stone that fits into my power drill. Just hone enough to
break the glaze and give a nice 60* cross hatch pattern. You can also
rent a "grape" hone from your local FLAPS for next to nothing. These cut
a little better than a three stone.

Make sure you clean the old pistons really, really well, especially the
ring slots.

While the engine is apart, replace all of the bearings. The rod bearings
are already out, the mains can be rolled in with crank in place. With no
belt on the intermediate shaft, check for excessive side-to-side
movement. This is the bane of VW diesels. Too much clearance in these
intermediate shaft bearings will cause low oil pressure. Unfortunately,
the block must be out of the car to replace these bearings.

Also, you should replace the oil pump. There three sizes to choose
from... 26, 30, and 36mm. The 26 is for the standard NA non-hydraulic
diesel. The 36 is for hydraulic, turbo diesels. The 36 will give
obviously more pressure, and will make up for some slop in bearing
clearances. IMHO.

Good luck!

-Gary, Orlando


On Thu, 2003-03-20 at 23:18, Kenneth E. Oldrid wrote:
> Hi all,
> I am re-ringing my pistons in my 86 jetta's 1.6. I am not reboring the
> cylinders, as many others have gotten by on new rings only. My question is,
> what are my options for honing the cylinders? DO people use sandpaper?
> I have new head bolts, gaskets, timing belt, and rings. Are there any other
> components essential for a rebuild that I've left out?
> thanks,
> Ken
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