

| Subject: | Re: Exhaust valve leak on fresh top end rebuild-I need a little advice |
| From: | Giasson, Pascal (DNR/MRN) |
| Date: | Wed, 2 Apr 2008 12:11:44 -0300 |
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
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