[Vwdiesel] temp gauge/sender

[Nate Wall]

Head number 068 103 373 M on a 1989 Jetta? Hmmmmm....
The PO, or somebody, put an eariler engine in it for
sure. That head number is for a mechanical NA head,
used on early '86 and earlier VW diesel NAs, and it
must be mated to a block of that vintage designed for
mechanical lifter heads. The "N" denotes TD mechanical
lifter head. Note, you have to adjust the valves
periodically on this engine!

--Nate


--- LBaird119 at aol.com wrote:
> >  068 103 373 M    Also there is a
> >  circular symbol that  shows a arrow pointing to a
> 1
> >  then a 8 over a 9 then a "3" face down in the
> circle.
> >  My question is what year engine is this?
>
>   That's just the head, not the engine.  I've seen
> that number before but
> don't remember which series it is.  It doesn't
> narrow it down much.
> The revision "M" is the closest to a determining
> factor of what it came
> on.  I knew how to read those date clocks once but
> it's hard enough
> when you can see them!
>   I just checked ETKA and all the heads there are
> 351 with various
> revisions.  Maybe that recollection was from a
> new/aftermarket head?
>   The engine code is on a flat spot on the block,
> right below the head,
> between #3 and #4 cylinders.  The two letters will
> give the series, perhaps
> the numbers will denote a date.  Probably just a
> serial number but then
> those of us with known, original engines might be
> able to work up an
> approximate date from that. :)
>
> I think the guy who cobbled this
> >  engine into the car was a bit crazed & and so far
> I've had to connect
> things
> >  the proper way on the fuel system ect... I'm &
> trying to hook up the temp
> >  gauge and I have found the plug under the hood
> that goes to it. the
> >  plug is  the black rectangle with two small
> connectors on the
> >  inside. The problem is I can't find where to plug
> it in to. I think
> >  that the engine most likely is from a earlier &
> car ( mine is a '89
> Jetta).
>
>   It plugs onto the sensor on the end of the head
> nearest the transmission.
> Most of us have two sensors in the adapter between
> the head and the
> hose.  You apparently have the plug for a later,
> dual sensor but the
> two sensor adapter?  You could make an adapter plug,
> splice in different
> ends, (female spade) or get the different adapter
> and sensor from a
> wrecking yard or even dealer or aftermarket.
>
> > I
> >  also cannot find where to plug the Altitude
> compensation Vac. line into as
> >  there seems to be no place for  that either near
> the injector pump. I want
> > to
>
>   If you have an altitude compensator, you'll also
> have the aneroid like on a
> TD.  The line just connects to what is the vent on
> the TD and the lid is then
> plugged.  That's the biggest part of it. There's the
> "pressure regulator" and
> filter that mount on the inner fender or something.
>
> >  make sure the auto cooling fan for the engine
> works too.    TIA Jeff
> >
>   Easiest way to do that is after driving the car,
> lift the hood and stand
> there, heater and fan off and wait.  If the
> weather's cool then you'll need
> to rev the engine a bit or youl'll be there a long
> time!  Check the temp
> gauge from time to time and see if/where the fan
> kicks on.  You can
> stick a candy thermometer, or one that is designed
> for up to about 250F,
> into the reservoir at that time and you'll know the
> temp the fan kicks in at.
> Likewise for when it kicks off.  I wouldn't run it
> with the cap off though,
> until the thermostat's for sure opened up.  If it
> has a hot stat in it, it
> may
> not open without that added pressure.
>      Loren
> _______________________________________________
> vwdiesel mailing list
> vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel


__________________________________________________
Do you Yahoo!?
The New Yahoo! Search - Faster. Easier. Bingo
http://search.yahoo.com