[Vwdiesel] re-torqueing the head

LBaird119 at aol.com LBaird119 at aol.com
Mon Mar 17 18:11:46 PDT 2008

  Nope, those are for 12mm Raceware head studs only.  11mm
Raceware is similar only slightly different torque specs.  11mm 
stock head bolts are 37/52/66 ft lbs in those three steps, 
then warm up, recheck the 66, drive 600 miles, recheck the 66.
(I go closer to 70 instead of 66).  12mm bolts call for 30/44 ft-lbs 
then 180 degrees, warm up and go another 90 degrees, drive 600 
miles and go another 90 degrees.
  If you have the original engine (or any 1.6 newer than '81) then 
it'll have the 12mm stretch bolts, unless Raceware or ARP head 
studs have been installed.  In that case you'll have nuts instead 
of bolt heads under the valve cover.
  Not doing the retorques when called for is a good way to get 
a leaky head gasket.

In a message dated 3/17/2008 5:24:09 PM Pacific Daylight Time, 
biovolks at yahoo.com writes:

> Does that torquing instruction (below)apply to any type of head bolt on vw 
> diesel?
>  I bought my latest 90 diesel turbo Jetta last year, and the head gasket was 
> replaced 
>  about 1-2 years previous.
>  Everything runs fine, there is just a very slight leak from the gasket to 
> the outside of engine.
>  It wasn't done by a vw mechanic, and the person I bought it from didn't go 
> back in for
>  any retorquing.
>  There's no way of me finding out if they were regular bolts or stretch.
>  I know, it might be a slight warp in the head, but it would be nice if all 
> I need to do is re-torque.
>  Paul
> Date: Sat, 15 Mar 2008 01:10:02 EDT
> From: LBaird119 at aol.com
> >Raceware says to not torque the studs more than 50 ft. lbs. Has
> anyone
> >increased the torque on the studs to something more than 50 ft. lbs.?
> I
> >noticed the Bentley has some of the stretch bolts pulled up to 65 ft.
> lbs.
> >These studs are the 11 mm studs.
>  The 11mm bolts aren't stretch.  That's why they go to 65lbs.
>  I have the RT-106 instructions right here.  "Torque the nuts in 
> three increments using the torque pattern in the factory service
> manual.  Step 1 40Nm., (30) ft/lbs.  step 2 60Nm., (45) ft/lbs.  
> FINAL TORQUE  80Nm., 60ft/lbs.
>  We recomment running the engine until it reaches normal operating 
> temperature then shutting it off and alloing it to cool to room 
> temperature, then re-torque the nuts to 80Nm., (60) ft/lbs. again."
>  Then I say follow most head gaskets recommendation of a 
> re-torqe after 600 miles.  (some gasket instructions say 1000 miles 
> but I believe it's a misprint since most seem to say 1000 miles / 
> 600 Km.

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