[Vwdiesel] [Audi-VW-Diesels] Head Bolts and more

[Dave Cook]

Ok, I am having more and more fun with this.  

I pulled the head on the second engine.  Found a couple things so far:

*Without the head, the engine rotates nice and smoothly.  This is good!

*There is some surface rust in cylinders 1 and 4.  In 1, there isn't a ton (like, it doesn't look like it is deep into the cylinder wall, but it is also not smooth to the touch).  It looks like probably if a hone passes through it it will go away fine.  Four is a little less.

I think this means that honing and rings are for sure in order.  Guess I still need to think about whether or not I want to throw the $55 bearing set in there.

*It had the old style, reusable bolts.  (Allen head, not 12-point.)  If it were you, would you re use those, or go with the gasser ones I ordered, or order stretch diesel bolts from elsewhere?

*The flywheel end of the crank has some thin surface rust where the seal would be.  Ironically, I took the plate off this particular engine a few years ago thinking I needed it for a different project.  Think a little bit of steel wool will be sufficient to clean up that rust so the seal doesn't leak later?

Other interesting notes from my time in the garage today:

*In the old engine, I was mistaken about the odd bolt.  It wasn't the older style, it is the newer,12mm style.  Someone drilled and tapped one bolt hole bigger for some reason.  

*For kicks, I took the head off the extra block I grabbed yesterday.  It had problems too, one of the valves broke off #1, bounded around a bit, and became lodged in the head sideways!  This engine, per the code, came out of a Vanagon, so surely it worked pretty darn hard.  Added a couple pics to the album for your carnage-viewing pleasure.

<http://www.facebook.com/album.php?aid=361754&id=583537597&l=035aba2bd5>

Dave Cook

--- On Sun, 2/6/11, Dave Cook <davevw at yahoo.com> wrote:

From: Dave Cook <davevw at yahoo.com>
Subject: [Audi-VW-Diesels] Head Bolts and more
To: "Audi-VW-Diesels Group" <Audi-VW-Diesels at yahoogroups.com>, "VW Diesel Group" <vwdiesel at vwfans.com>
Date: Sunday, February 6, 2011, 8:30 PM







 



  


    
      
      
      I was at the auto parts store ordering all the stuff for the Banana Rabbit Rebuild (*however far that takes me).



One of the things I knew I would use would be a head gasket and bolts.  They didn't list any of the 11mm bolts for a diesel rabbit.  But I recalled someone saying here that gasser bolts were somehow better, or at least just as good.



So I had him look up bolts for an '85 Jetta gasser.  They were the same diameter and length (11x96) so I had him get a set.  



So was I right in my memory?  How, if at all, are they better?  Or is it, as I'm starting to think as I type this, that it is the raceware studs that are better and you have to order them for a gas engine?



*I've been talking to a gentleman who is known around the local VW club as being somewhat of a guru in the old bunny engines.  He has about talked me into simply rebuilding the second engine (honing, rings, bearings) though some of you guys about have me convinced otherwise!



I think my newest plan is to pull the head in engine #2.  The head I pulled off #1 looks really good, I didn't even see any cracks between the valves so I imagine odds are it is better.  This gives me a chance to look inside a bit and see what I see.  



If everything looks bright and shiny where it should be, I will probably first try putting the good head on it and go from there.  If it looks like there could be some benefit to going further, then I will.



Dave Cook





    
     

    
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