[Vwdiesel] More Quantum questions?

[LBaird119 at aol.com]

In a message dated 1/9/2009 2:48:25 AM Pacific Standard Time, 
toensing at wildblue.net writes:

> Started work on the Quantum but head not off yet. Got as far as removing 
> the valve cover &intake manifold. The problem is getting at the lower exhaust 
> manifold bolts (12 mm?, that is what the upper exhaust nuts are) &
> disconnecting the turbo from the exhaust manifold. Tried to loosen the 3 bolts that 
> appear to hold the turbo to the exhaust manifold but did not attempt with a 
> breaker bar, yet. Don't want to break anything.Suggestions? I did check the torque 
> of the head bolts at 29 psi &43 psi pre Bentley specs but did not try to 
> tighten further. The specs call for 1/2 turn but didn't do that but noted the 
> Bentley said these bolts could be reused. Was thinking if using the racing studs 
> instead as they call for higher torque limits. Timing belt looked good &
> suspect work has been done on the engine as the valve cover nuts were loose. 
> Could remove most without aid of a wrench. 
> 

  The manifold to turbo bolts should be a polygon headed bolt 
with a flange.  They're about $40 each!  Should be 4 of them, 
come out from below.  The turbo has to come off to get at 
all the manifold-to-head bolts.  If you're trying to remove the 
turbo-to-downpipe bolts, better soak them in penetrant first.  
It won't do much good to pull it though, there's usually not 
enough give to clear the studs and get the turbo out so you 
still have to pull the exhaust spring clips and pull the downpipe 
with the turbo.
  The torque specs are for the initial torque of the head bolts
then a half turn, warm up the car then another half turn, drive 
600 miles then ANOTHER half turn.  No way to "check" the torque 
on them if they were done anywhere close to right.  (this is for 
12mm head bolts/post '81 1.6 engine)  They are NOT considered 
reusable.  Although it's been done.  Only the 11mm bolts are 
declared reuseable.
  Valve cover nuts often get loose after a new valve cover gasket 
has been installed, after it compresses a little.  They need rechecked 
after a week usually.
    Loren


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