[Vwdiesel] UPDATE Re: Should I Re-Ring?

[Bud]

Watch out about using a rag, make sure it's lint free.  I used the red shop
rags when I did my limited rebuild and the lint clogged up my pump screen.


Bud
http://www.rhinocat.com/cvaf4u/




On Thu, Jan 30, 2014 at 3:56 PM, Will Taygan <lists at alaskabiodiesel.org>wrote:

> Well, I got the new Peloquin transmission in, drove it for a mile, then
> proceeded to pull the head.  Ugh.
>
> I found significant exhaust valve marks on #1 and #2 pistons.  I'm a
> little ticked, since the machine shop said "ummmm, use the thickest head
> gasket you have" I believe they knew it was a problem.  Ah well, live
> and learn.  I'm surprised it didn't break the valves, as it's a good
> 1/8" deep, not just a light kiss like I've seen before.
>
> I don't have the months and months it would take to redo this properly,
> sooo...
>
> * Head gasket looks good, Hmmm maybe running issues are more due to
> valves??
>
> ** Almost no ridge on the cylinder top.  Should I scrub it with a
> kitchen scrubber to remove slight carbon buildup before pulling the
> pistons?  or just tap them through?
>
> *** Do I need to hone If I'm putting the same rings back in?
>
> **** Grant rings should be arriving today, but if the original
> Kolbenschmidt ones gap okay should I keep them??
>
> ***** Bentley suggests 220 for the hone - in rack in a Westy, are the
> balls sufficient?  Just put a rag over the crank?
>
> THANKS,
>
> Will in Alaska.
>
>
>
>
> On Tue, 2014-01-21 at 17:43 -0900, Will Taygan wrote:
> > (Crossposting from the Diesel-Vanagon group:)
> >
> > Background: 82 Stock-ish 1.6NA - 2yrs+35k on bored +1mm rebuild.  Lost
> > coolant at 10k, lost oil pressure at 34k.  Still running.  Was running
> > hot on hills under load, replaced thermostat and radiator, helped (like
> > perfect) for a couple weeks, now running hot and cold every couple
> > miles.  Oil in coolant, replaced oil cooler, coolant tank stays full.
> >
> > Plans: replace head gasket, swap oil pan for a turbo pan (a delayed
> > project) and install new Peloquin trans coming this week from
> > AATransaxle.
> >
> > ** Compression 400,345,370,400 (HOT), 450,390,440,450 with a spoonful of
> > 2-cycle oil.  Is a +50psi with oil sealing like this expected on normal
> > rings, or would there be a benefit (or disadvantage) to putting new
> > rings in?
> >
> > Probably should have replaced the headgasket a long time ago, but my
> > compression tester was broken, and it HAS been driving daily (though
> > just on local roads, not the highway).
> >
> > SHOULD I RE-RING?  I'll have head and pan off anyway, but it would be
> > in-rack with crank in.  I have another engine to rebuild when this one
> > dies, but I would really like to get this one in shape for summer.
> >
> > Thanks for you opinions!  I have disassembled a bunch of parts engines,
> > but have never done rings or put pistons back in.
> >
> > Will in Alaska.
> >
> >
> > _______________________________________________
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> > Vwdiesel at vwfans.com
> > http://www.audifans.com/mailman/listinfo/vwdiesel
>
>
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