Date: Sat, 19 Sep 2009 17:25:00 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: Water Temp sender location
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hey max, I've been waiting to see if anyone would comment on your post.
What would help me is if you'd say which engine you are talking about.
I doubt it's the diesel, so which waterboxer engine ........hmm ?
both 1.9 and 2.1's have metal pipes going to the water pump.
oh I get it now.....I bet you mean you had a wheel NUT welded to a metal
pipe so you could screw a sensor into that.
Pretty hard to screw a sensor into a BOLT.
yes, oil temp runs higher than coolant temp after a while, 'depending.'
If it's zero F ambient, and you are just driving along gently, I'd never
expect oil temp to get up to coolant temp.
But 'normally'.............oil temp equals coolant temp after a while, then
goes above coolant temp if there is much load on things, and it's warm
outside.
And you don't want oil temp too low anyway.
Around 200 F I would consider about right for an oil temp under normal
operation. ( 100 C = 212 F ........so around 100 C is 'nice' . ) If it gets
to say 240 F, I'd call that higher than you'd like , and not something you
want to see too commonly. Synthetic oils are better at very high oil temps
of course.
re
the oil temp(unit down where the oil filler tube used to be a la
> Ken Lewis design
your oil filler tube is not stock ? In a diesel vanagon you can get away
without an oil filler tube if you have the car style valve cover, since you
can fill it through the valve cover at the oil cap on it, , but not on a
waterboxer.
???
I will say this over and over .........stick very close to what the
manufacturers do.
That means, wherever VW measures their coolant temps.........you should try
to do as close to that as you can.
If you will say which engine you are talking about, I could help you more
possibly.
A jetta, for example, with factory installed oil temp gauge, has the sender
on the oil filter flange.
Can't do that on a waterboxer though, at least not directly and easily.
But putting the sender for oil temp at the bottom end of a waterboxer oil
filler tube, would work nicely.
on a 1.9 wbxr I might try to drill and tap the aluminum part where VW has 2
coolant sensors there.
on a 2.1 .......I suppose you could have one at the forward end of the large
black metal pipe on the left side, as close to the t-stat housing as you can
get.
I don't really think there is much reason to put on an aftermarket temp
gauge on vanagons. The stock dash gauge is just fine. Just super fine. Once
you know what is normal, and you use your infrared temp gun to confirm that
needle right on the LED is 180F ...or whatever, and it runs there normally,
all you really need to know is when it's running hotter or cooler than
normal.
Whether it's running too hot at 198 F or 202 F doesn't really matter. The
stock gauge is quite reliable I think.
Bothers me to have two gauges for the same function that may not agree, and
sure would bother me to have a stock gauge in the dash not working.
Stock-ola on the temp gauge for me baby !
Seems that people chronically forget to add two pieces of useful information
to their posts......
one is WHERE things for sale are located,
and the other is ...........WHAT YEAR and Model of Vanagon, what engine,
etc.
more clues please !
Scott
----- Original Message -----
From: "Max Wellhouse" <dimwittedmoose@CFU.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, September 19, 2009 9:34 AM
Subject: Water Temp sender location
> Some time ago I had a wheel bolt welded to my metal pipe that bolts
> to the water pump with the thought athat some day i'd find a 14x1.5
> VDO sending unit for my on top of dash VDO temp gauge. Now that I've
> found a sending unit and it's arrived, I screwed it in last night
>
> The question is; I this an optimal place to measure water temp? The
> factory chose up by the thermostat for their gauge, and I'm noticing
> that the oil temp(unit down where the oil filler tube used to be a la
> Ken Lewis design) reads higher than the coolant temp. How does the
> oil get hotter than the coolant or is the metal pipe area the coldest
> the coolant gets? I would think being that close to the exhaust and
> all that it should read hotter than the oil at least until 15' or so
> of highway driving. Yes, I have a 150C gauge and the complimentary
> 150C sender, so it's not a mismatch of resistance or whatever. I
> will ocntinue to play with it some more and observe and report back.
>
> Inquiring minds wanna know.
>
> DM&FS
