964 oil temp gauge and cooler fan

wastintime · 11-10-2003, 08:33 AM

Hey everyone,
Three questions... 1. does anyone know what temperatures the tick marks in a 964's oil temp gauge correspond with?

2. Does anyone know how simple it is to replace the gauge face with one that has numbers?

3. Does anyone know how to get the oil cooler's fan to turn on 30-35 degrees sooner? I would assume it's a simple matter of switching out a resistor or something like that, but was wondering if anyone had already done it.

Thanks,
Andrew

masraum · 11-10-2003, 08:38 AM

If the ticks are the same as the 3.2 then it is roughly
300
250
200
150

there is a kit, you have to replace the gauge and the sender with one from an earlier year, but your gauge actually does have numbers, they are just really tiny and under the edge of the gauge
http://www.pelicanparts.com/catalog/shopcart/911M/POR_911M_electr_pg2.htm#item6

You would need an adjustable or differently calibrated therm from the aftermarket, severaly people have gotten one from pep boys.

wastintime · 11-10-2003, 08:53 AM

Oh god I hope not!... no I'm pretty sure the tick marks are not the same at all, there are only 2 tick marks on the gauge, well, techincally there are 4, but there are two only about a millimeter or two apart on the bottom, and I definitely don't know what those mean. Then there is one tick mark at about... 8:30 and another at 10:30 and then the redline probably starts at 11:00. All i know is that on the track my car never gets hotter than the 8:30 tick mark, but I have no idea what that actually means.

masraum · 11-10-2003, 09:08 AM

Here, it took a while to find, but this shows the numbers (in celsius), F translates roughly to 150 200 250 300.

if yours isn't the same then you may be able to see numbers on yours now that you know where to look.

wastintime · 11-10-2003, 10:00 AM

Steve,
Thanks! I've been going crazy trying to find something like that... that gauge doesn't quite look like mine, but it seems very similiar, so hopefully those numbers correspond with my marks. What I'd like to do is have North Hollywood add some numbers to my gauge, or maybe get all new gauge face since I already need a new speedo face.

Ah, I think these numbers do match my gauge! I redid your calculations... sorry, I'm a physicist can't help it, they actually equal 140 F, 194 F, 248 F, and 302 F. Which makes sense, 194 degrees farenheit is when you are supposed to check your oil level... this explains why I've been having so much trouble determining my oil level I never get to 194 degrees in normal driving! I'm not sure if this is good or bad my engine runs really cool... the hottest it gets on the track is probably no more than 200 degrees farenheit.

masraum · 11-10-2003, 10:46 AM

Check the link in my first post for a numbered gauge. That way you just replace the gauge and still have the original. I think it is somewhere between $75 and $100

wastintime · 11-10-2003, 02:43 PM

Thanks, I'll have to think about doing that, I don't know if I'd want to mess with a gauge by myself, but it'd probably be cheaper than having someone make a new face for me. Still, I'd kind of like to keep the gauge looking the way it does, and just add some numbers to it... either way it'll really help with keeping track of my temps on the track though.

masraum · 11-10-2003, 04:29 PM

The gauge is easier to replace than the face. The gauge assembly will either pull out or push out from the trunk (you can get an arm back there). Once that's done there are 4 small screws that hold the gauge into the combo gauge assembly. You'll have to do this to do the face anyway, but you would have to disassemble the gauge itself to do the face, but for the new gauge you just swap the wires. The gauge is a genuine Porsche part.
For more detail check out Project #90 in Wayne's book 101 Projects for your Porsche 911

wastintime · 11-10-2003, 04:37 PM

okay, that doesn't sound that complicated, and yeah, on 964s they pop out through the dash and they're really easy to get to... I'm a little worried that everywhere I've seen them listed they say it's for a '74-89 911. I wonder if maybe the new sender won't fit a 964... oh well, I'll check around and hopefully it'll work.

Thanks again,
Andrew