[Vwdiesel] Excessive blow by

[Bart Wineland]

Hi Nick,

I would love to offer an opinion on your engine since we have had similar 
results with our rebuilds but with my success rate I am going to let 
someone else answer your ring questions. My bet will be that you should not 
reuse rings but think you should wait for an expert to answer. Also when I 
do it again I will go with the chromed rings that Loren suggests. My 25k 
rebuild is now on my garage floor waiting to be torn down again. I put my 
$300 junkyard 1.6 na in last week. It started and ran pretty good and did 
not smoke at all like my rebuilt. I felt I may have turned a corner. I went 
to top off the coolant and noticed a thin layer of nice black diesel oil 
floating on top Monday night.  I hoped it might have been from rough 
handling when the engine was pulled and on its side and all the 
transporting of the engine but still don't know.  I flushed the coolant 
system and while it was warming up  the engine stalled very abruptly while 
I was revving it up some. I actually think it ran out of fuel. I put 5 
gallons in last night and it will not start now. It tries and makes black 
smoke. I don't know if it could have slipped timing or not but plan to 
start there tonight.

One thing I do feel qualified to offer an opinion on is make your garage as 
big as you can afford :)

Gook Luck!

Bart

At 05:02 AM 12/8/2004 -0500, mikitka wrote:
>  Well once my garage is built I'm going to tear back into the engine. With
>over 5k miles on the rebuild I'm getting excessive blow by. Just to much air
>flow out the breather valve, along with a nice oil mist. I guess something
>is up with the rings. Great compression but for some reason it is still
>allowing blow by. My question is would it be a good idea to get a new set of
>rings to fit my .020 over pistons and install them after I rehone the
>cylinders?  If the rings that are in there now are good, should I go back
>with just honing the cylinders and installing the same rings? That is if I
>don't find anything wrong with the rings when I pull the pistons, or just
>put new rings in? Any tips as to protecting the crank in the process of
>honing the cylinders? I don't see a need to pull the entire engine, but if
>the shop that did the machine work wants it out I guess I will not have a
>choice since they will go back over it for me at no cost since this
>shouldn't be happening. If all goes well I should have a nice new 30' x 36'
>garage by the New Year. Keep your fingers crossed.
>Nick
>
>PS thanks for all the help, as a newcomer to this place, I feel like I have
>been here for years. :)
>
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