Mark, 2 spark plug seal designs exist. The square seal is the one with the crush washer you have to make sure is on the plug before you install it. The taper seal has no crush washer. Instead the sealing surface on the plug and the head are tapered like a flare fitting. All the VWs I've owned had the square seal but I've not owned anything with the wasserbus engine yet. Tom www.stir-plate.com
-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of Mark Dearing Sent: Monday, May 03, 2010 7:16 AM To: vanagon@GERRY.VANAGON.COM Subject: Re: Found a timesert in the spark plug hole In a message dated 5/2/2010 2:36:04 P.M. Eastern Daylight Time, syncronicity1@GMAIL.COM writes: So a question, does the Vanagon spark plug hole have a tapered or square seal at the top? Could this old "timesert" thing be the source of low compression if it was incorrect? A couple of compression tests several months ago showed this cylinder low (can't recall the number, the rear one on the driver's side).
hello Roland there are a bunch of different plug inserts out there. They all work about the same. no compresion loss if installed correctly and head has no cracks. hole is not tappered and I don't know what you are calling a square seal? Plugs do have sealing rings on them and should be left on later mark d |
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