Date: Sun, 13 Apr 2014 21:46:12 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Vanagon Head Leaking Around The Head Nut(S)
In-Reply-To: <1499313576.1135420.1397433769694.JavaMail.root@sz0063a.westchester.pa.mail.comcast.net>
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Nuts in critical applications are not re-usable. For our head nuts at minimum they need to have the threads chased or tapped to make sure they are not distorted and cleaned. Then for assembly, the threads on the stud need to be lubed and the sealant only goes on the flange. If the stud is twisting and springing back as you approach final torque you will not get a good result. The stud is weak or you still have excess friction on that thread.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of J Stewart
Sent: Sunday, April 13, 2014 8:03 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Vanagon Head Leaking Around The Head Nut(S)
Thanks, Mark. I think I threw away what was left in the tube of yellow stuff, would Right Stuff work as well? Thanks, Jeff Jeff Stewart ----- Original Message -----
> I would just remove the suspect nut and put fresh yellow stuff on it
> and torque it back into place. Make sure the inside of the nut is as
> clean and dry as possible before you put it back.
> If they are VW wbx heads then there is a common crack area that often
> appears to be one of the upper nuts when it is really a crack very
> close by to it.
> Mark
> J Stewart wrote:
> > OK I've posted some of this story on Facebook, just got back from
> > Everybus. Condensed version: replaced right side head gasket two
> > weeks ago. Put about 150 miles on the van before leaving Friday for
> > Everybus, no problems (well couple of minor ones). 170 miles into
> > the trip Friday coolant light starts blinking. Pull over, let it
> > cool, top it off and hit the road. 10 miles later blinking again. Do
> > the same. Repeat 3 more times but get to Everybus. Every time I
> > stopped, nothing dripping from the van, engine is dry. Folks are
> > telling me I didn't burp it. I'm skeptical. Today coming home it was
> > low about every 100 miles, light would come on, but now I'm seeing
> > drips from the right side. It "APPEARS", very hard to tell, but it
> > appears to be leaking around one of the upper cylinder head nuts
> > (torqued to 40lbs and I used the yellow goop) With the AFM, air
> > filter, hoses, etc. it is hard to see, but that is what it is
> > looking like. Is it customary to retorque the heads after xxx miles?
> > Long
> ing for an inline 4, Suby, Zetec, just about anything else besides
> this waterboxer!! Jeff
> >
> >
> >
> >
> >
> >
> > Jeff Stewart
> >
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