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Date:         Fri, 1 Sep 2000 08:35:05 -0700
Reply-To:     Daniel Schmitz <djs@GENE.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Daniel Schmitz <djs@GENE.COM>
Organization: Genentech, Inc.
Subject:      Re: Head temperature sensor
Comments: To: francoix gagnon <fxgagnon@HOTMAIL.COM>
Content-Type: text/plain; charset=iso-8859-1

francoix,

On the VW Type 4 engine, it doesn't really matter to which spark plug the sensor is connected (assuming you are using sensor that goes under a spark plug). Cooling air reaches all cylinders uniformly, unlike early Type 1 engines of the past.

My VDO gauge spans 0 - 650 deg. F, and 350 is right in the middle. The needle rarely makes it to 350.

If you are experiencing high temps in 4th gear, either the sender/gauge is wrong or you are, in fact, running your engine hot. Fourth gear is for cruising, and at cruising speed, on level road, you should not be running that hot.

Dan

francoix gagnon wrote:

> Geeeese! > > Dan, > > Are you sure you sensor is connected to the third piston? > In the fourth gear, I never go below 350F. > My motor pit is well insulated with a new rubber seal and the timing is > exactly what is it supposed to be. (7,5 degres) > > Françoix > West 81 > > >From: Daniel Schmitz <djs@gene.com> > >To: francoix gagnon <fxgagnon@hotmail.com> > >CC: vanagon@GERRY.VANAGON.COM > >Subject: Re: [VANAGON] Head temperature sensor > >Date: Thu, 31 Aug 2000 10:26:02 -0700 > > > >Francoix, > > > >Not that high! > > > >The Type 4 VW engine is prone to dropping exhaust valve seats at high > >temp/high > >mileage. According to my VDO head temp gauge, my temps never exceed 350, > >and > >most of the time stay down around 250. However, this is a localized > >indicator > >of only one cylinder, so it's of limited usefulness. > > > >If you are truly running that hot, you may be running your engine too lean > >for > >some reason. These engines cannot take high temperatures for very long, so > >be > >careful. > > > >Dan > > > >francoix gagnon wrote: > > > > > Hi folks, > > > > > > Heat wave in my northern contry brings the temp of my head around 450 F. > >I > > > have just install this VDO head temperature sensor on the third piston. > >How > > > high can I let the temperature raise before any damage can occur to the > > > engine. > > > > > > Thanks > > > > > > Françoix > > > West 81 > > > Québec > > > > >_________________________________________________________________________ > > > Get Your Private, Free E-mail from MSN Hotmail at > >http://www.hotmail.com. > > > > > > Share information about yourself, create your own public profile at > > > http://profiles.msn.com. > > > > _________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > Share information about yourself, create your own public profile at > http://profiles.msn.com.


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