Date:         Wed, 2 Apr 2008 09:46:38 -0700
Reply-To:     Jake de Villiers <crescentbeachguitar@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jake de Villiers <crescentbeachguitar@GMAIL.COM>
Subject:      Re: Exhaust valve leak on fresh top end rebuild-I need a little
              advice
Comments: To: "Giasson, Pascal (DNR/MRN)" <Pascal.Giasson@gnb.ca>
In-Reply-To:  <A817922C9DAF504580C0D892C34367760379569D@GNBEX01.gnb.ca>
Content-Type: text/plain; charset=ISO-8859-1

Maybe tap on the valve while blowing air back up the port to dislodge a
piece of grit.

Did you hand lap the valves?

On Wed, Apr 2, 2008 at 8:11 AM, Giasson, Pascal (DNR/MRN) <
Pascal.Giasson@gnb.ca> wrote:

> Thanks Bob, Unfortunately I don't have the rockers on yet so it
> eliminates the possibility of it being an adjustment issue.
>
> Pascal
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Bob Donalds
> Sent: Wednesday, April 02, 2008 9:05 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Exhaust valve leak on fresh top end rebuild-I need a little
> advice
>
> Pascal
> try backing off the adjustr and recheck the leak down
>
> Bob
> ----- Original Message -----
> From: "Giasson, Pascal (DNR/MRN)" <Pascal.Giasson@GNB.CA>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Wednesday, April 02, 2008 7:25 AM
> Subject: Exhaust valve leak on fresh top end rebuild-I need a little
> advice
>
>
> So I decided to do a leak down test on my 1.9 resealed top end last
> night just to see if all the cylinders were the same, and to see if I
> messed up something on reassembly.  The heads have a fresh valve job,
> new Goetz rings, and cylinders deglazed and I used Total Seal Quick Seat
> piston ring powder on the cylinders.  The results were #1: 77%, #2: 87%,
> #3:88%, #4:89%.  So something is not quite right with #1.  I could hear
> and feel air coming out the exhaust port so I tried taping on the
> exhaust valve stem several times both with the combustion chamber
> pressurised and depressurised.  I then rotated the valve a little bit to
> see if that mad a difference, but it did not.  I assume this is not
> "normal" and will not get better after the engine gets a few miles on it
> (I'm kind of thinking that it might end up burning that valve).  Am I
> looking at taking it apart again and having a look at that exhaust valve
> to see what is going on?  Any suggestions?  Thanks
>
> Pascal
>



--
Jake
1984 Vanagon GL
1986 Westy Weekender "Dixie"
Crescent Beach, BC
www.crescentbeachguitar.com
http://subyjake.googlepages.com/mydixiedarlin%27