extra instrumentation - AAZ

Post by **thenaylortribe** » 15 Jun 2007, 14:23

Ok, have bought extra gauges online.
Oil Pressure, Oil Temp and Water Temp.

I am fitting an oil cooler which has a sandwich plate with built in thermostat.
My question is, can I fit a second sandwich for the temp/pressure gauge senders as well as the oil cooler one?

Post by **philippacman** » 15 Jun 2007, 18:47

well ish ,you should be able to get an inline pipe conector for pressure n temp switchs, demon tweeks or the like will do um

or a screw in conector that will take the two sensors and screw in to the block were the original oil pressure switch goes

or into the filter housing ,wichever is best for u.

Post by **thenaylortribe** » 16 Jun 2007, 09:04

I'll have to wait for the engine to turn up (Monday now) to see how much space there is where the filter screws on....

Post by **HarryMann** » 16 Jun 2007, 12:56

The oil filter housing has two tappings already... the oil temp ought to go in one and the oil pressure replace the (HP) tapping adjacent to it...

The std. water temp gauge (uncalibrated) is usually sufficient..

If you start to overfuel and overboost the AAZ, without an intercooler, an EGT is a worthwhile addition, as is a boost gauge even if only cheap, cheerful and temporary for calibration purposes..

http://wiki.80-90.co.uk/index.php/Diese ... nstruments

PS. You might be shocked by both oil temp and EGt readings, be prepared

Post by **Westy.Club.Joker** » 16 Jun 2007, 18:38

Got similar gauges to fit to mine, decided that I will fit the water temp sender in the top hose from the cylinder head, the 19mm dia. one that runs to the heater, as I think this will be the hottest part of the system to keep an eye on the temp. Got a 19mm pipe joiner that I`m, going to machine and weld a threaded boss onto so the sender hangs in the water flow properly.

The oil temp sender I am going to fit into the wall of the sump below the normal oil level obviously (gotta drop the sump to drill and tap it) as I think the oil temp in the sump is what will matter, any reading from the oil-cooler side or the filter side may not be a reliable indicator of what`s going on.

Pity you can`t just replace the sump plug with the sender, but as you know the diesel sump has a weird drain fitting.

Post by **HarryMann** » 16 Jun 2007, 18:48

Well, all interesting Westy-Joker, though if the oil really gets hotter than my sender, in the top of the oil filter housing, I'd be pretty surprised

It's also a vey easy place to put the sender!

No problem to see 130C + when holding 70mph or so for any length of time...

.. which is too much, even with fully synth!

Currently very happy to be using GSF FUCHS fully synth TD oil, at least some sort of safety factor with that stuff

Post by **andysimpson** » 16 Jun 2007, 19:32

HarryMann wrote:Well, all interesting Westy-Joker, though if the oil really gets hotter than my sender, in the top of the oil filter housing, I'd be pretty surprised

It's also a vey easy place to put the sender!

No problem to see 130C + when holding 70mph or so for any length of time...

.. which is too much, even with fully synth!

Currently very happy to be using GSF FUCHS fully synth TD oil, at least some sort of safety factor with that stuff

And with a faulty oil pressure switch

Post by **HarryMann** » 16 Jun 2007, 19:41

You mean VW actually make pressure switches that AREN'T faulty ??

Nah, no way

Post by **Westy.Club.Joker** » 16 Jun 2007, 20:04

That was my thought Harry, do you want to know the temp of the oil when its coming from the filter or before it goes through the pump? Is it better or worse to know what the temp of the bulk of the oil is at in the sump?

Are you running an oil cooler from a sandwich plate? Any idea on how much cooling is to be had from one of the kits? (Baxter has some on the go which fit up the front with long hose runs from back to front and back again)
How much cooling do you want? Optimum temp of the oil with a thermostatic sandwich plate?

Post by **andysimpson** » 16 Jun 2007, 20:44

HarryMann wrote:You mean VW actually make pressure switches that AREN'T faulty ??

Nah, no way

I will get a new low pressure switch on monday.

Post by **thenaylortribe** » 16 Jun 2007, 21:07

Guess that's a tentative yes then....

Post by **HarryMann** » 16 Jun 2007, 23:55

Guess that's a tentative yes then....

No, it was a 'why do you want to do that' when you don't need to

You don't want lots of those sandwich plates!

How much cooling do you want? Optimum temp of the oil with a thermostatic sandwich plate?

You cannot get enough on a TD diesel IMHO, so optimum is a bit of a stretch - conceptwise

Yes, one of Simon's up-front kits would provide a worthwhile degree of oil cooling and for any TD or TDi, wouldn't be overcooling or anywhere near it especially if you up the power even a bit

The thermostatic plate would be preferred, but in the UK I doubt matters a great deal with the recommended oil grade.

Post by **Russel** » 17 Jun 2007, 11:06

By using a good oil cooler up front u can drop and stablilize ure oil temp a lot.
On one of my vans i have one fitted on a moded 1.9TDI.Even with a winch obscuring max air flow over the cooler my temps never went above 105 deg. in Morocco in the desert booting it for hours in 3rd.
Using it in the UK it dosnt go above 98.

Post by **thenaylortribe** » 17 Jun 2007, 21:36

The reason for the two sandwich plates Harry is because all the ones I've seen have either oill cooler connections or two/three tappings for instrumentation not both.
And I want both ..don't I?

Is it better to fit the oil cooler at the front or in the right side air intake bay at the back?
If it goes at the front doesn't it drop the oil pressure on the return pipe?
Isn't it better to keep the pipes as short as possible?

Post by **thenaylortribe** » 17 Jun 2007, 21:38

And Walter has arrived home early!!
Turned up last night about 8pm...curiously when WE were supposed to return home....My wife reckons he carried on the trip by himself after we left.