I'm ordering a set of STACK gauges for my car, and they custom-make you a wire harness including the gauge senders, so I need to specify what size threads the current ones use / are in the engine block in order to get the right size fittings from them.

I need the sizes for the oil pressure sender (928 606 203 01) and the gauge water temp (not the ecu one) - i think that it's (944 606 125 00) - PET lists it as a "temparature sensor" but there is also (928 606 201 01) listed as "temparature sensor for cooling water" -- so you can see how i'm a touch confused on this one

 

You have email AND PM

 

Andre, i'm shipping your parts out today, sorry about the delays... i was in the hospital this weekend.

now, does anyone have info on these thread sizes?

 

measured the thread pitch, it appears to be M??x1.5 - but i don't have calipers or anything to measure the diameter...

 

Wow. Sounds like a cool setup. Can the Stack read signals from a CAN bus. You will want this capability if you ever go with a stand along engine management system.

You should be able to use the stock senders. Motec has some sender parameters compiled at <a href="http://www.motec.com/pdf/drawings.zip" target="_blank">http://www.motec.com/pdf/drawings.zip</a>. They additional individual parameters at <a href="http://www.motec.com.au/drawings.htm" target="_blank">http://www.motec.com.au/drawings.htm</a>. If you contact a local auto parts store, they should be able to give you the Bosch and VDO part numbers for your oil pressure and water temperature senders just by looking up your car model.

If you still want to use different senders, identifying the current parts by manufacturer part number and cross referencing them to the Motec diagrams should give you the thread dimenions.

Have fun!

 

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by dmoffitt:
<strong>Andre, i'm shipping your parts out today, sorry about the delays... i was in the hospital this weekend.

now, does anyone have info on these thread sizes?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Nothing too serious I hope. Shipping instructiona are in the latest PM. Send me the waybill # when you ship. I'd like to get started with my repairs ASAP.

<img border="0" alt="[bigbye]" title="" src="graemlins/xyxwave.gif" />

 

ok, whacky as this sounds i threaded the oil pressure sender into the o2 hole, and it fits - so if that's the same o2 sensor sizing as motec uses, it's m18x1.5 - and i THINK water temp must be m14x1.5 then.

if anyone can confirm/deny this, that'd be great...

 

I recently added an autometer water temp gauge to our 944 race car. Before doing so, I looked all over the place trying to find the existing thread in the block. Everything I found posted was either unclear or turned out to be wrong, so I am posting this here in the event it may help someone in the future.

The autometer gauge I bought (and I suspect most others) came with a 1/8" NPT sensor. There are a lot of references to the coolant sensor threads in the block being M14x1.5, and the thread does appear pretty close to that, but its not. Its 1/4" NPT. Crazy on a metric, german car, but it is. All you need is a 1/4 to 1/8 NPT adapter from any hardware store.

I never took any photos of the sensor in the block, but I assure you it is the correct fit. That is, unless someone prior to me re-tapped my block without me knowing, which is possible as this engine did not have a stock sensor in it when I got it. If thats the case, I apologize for the misinformation.

 

The hole is m14x1.5 but 1/4npt is 18tpi and maybe 1/10 mm smaller diameter so it might just work with enough dope or tape.

If the stock sensor were made for npt itd have a tapered thread.

Fwiw i just went out to my garage and was able to thread a 1/4npt fitting into that hole easily too.