more gauge questions, what is this one and will it work (gauge experts?) Options

[brant]

Hi everyone

I have a gauge that I got from Slits to use in my street car
I still have not installed it, and its been a few years now

my 1st question:
-what can you tell me about this gauge?
is it 1972 or 1973?

silver dot
so maybe a really early 73 appearance gauge?

I'm not selling this one, just curious and for my own use

2nd questions:
-how do I determine if my current senders, or which senders will be needed.


Currently I have a -6 fuel/oil temp gauge in the dash
its wired to the correct sender in the taco plate
it was 20 years ago... so I'll need to pull the sender to find out which model number it is.

any way I can tell from the numbers/model of gauge which sender is correct to use with this one ?


the fuel side of this "new to me gauge." Its a 914/4 gauge, with a stock 914 fuel tank and sender. I'm betting it is within the correct 90 -0 ohm range since it likely use the stock sender in the fuel tank. How can I verify that, or what do the experts and charts indicate as confirmation?


thank you in advance everyone!

brant

[Superhawk996]

I can't answer your questions with certainty. Hopefully someone else jumps in.

Clearly a combo 914 combo gauge. I'd assume it works with the same sender as the center console gauge that came with the appearance package. Fuel gauge, again should work. I'm not aware of fuel sender ever varying by year.

If you haven't already seen this link, that is the closest info I've seen to answering the question with any certainty on the temp gauges. Your gauge seems to have a fatter red band than the picture of a 74' combo gague shown in the link below. Perhaps they changed the width of the combo gauge in 74' just as they did with the 74' center console due to people being nervous about the needle being close to or slightly into the red? I have a combo gauge in storage similar to yours but haven't gotten as far as hooking up anything to verify calibrations.

http://www.914world.com/bbs2/index.php?sho...17496&st=20

[brant]

I can't answer your questions with certainty. Hopefully someone else jumps in.

Clearly a combo 914 combo gauge. I'd assume it works with the same sender as the center console gauge that came with the appearance package. Fuel gauge, again should work. I'm not aware of fuel sender ever varying by year.

If you haven't already seen this link, that is the closest info I've seen to answering the question with any certainty on the temp gauges. Your gauge seems to have a fatter red band than the picture of a 74' combo gague shown in the link below. Perhaps they changed the width of the combo gauge in 74' just as they did with the 74' center console due to people being nervous about the needle being close to or slightly into the red? I have a combo gauge in storage similar to yours but haven't gotten as far as hooking up anything to verify calibrations.

http://www.914world.com/bbs2/index.php?sho...17496&st=20

This is great info
thank you

"I copied this:
Alternatives include a 914/6 combination instrument or the similar 914/2.0 combination instrument that included an oil temperature gauge and was used on the two-liter cars that did not have the appearance group and console.

The 914/6 combination instrument (914.641.101.10) is shown in Figure 2. The oil temperature gauge portion of the instrument has five factory calibration marks. The marks are along the upper edge of the interior face and are not very easy to see without looking at a very small angle or removing the temperature gauge portion of the instrument by taking out the four screws in the back. The calibration points include 50 °C (1220F), 68 °C (154°F), 109.5°C (229°F) when the needle is vertical, 129 °C (2641F) at the beginning of the red-shaded zone and 144°C (291°F) at the beginning of the solid red zone. There is also a red oil temperature warning light at the high end of the scale that was planned for use with the sportomatic cars, but not connected to anything on the manual transmission cars.

The 914/6 oil temperature gauge uses a different sender than the 914/4, part number 901.641.632.00, which is a 150 °C unit. A calibration check of this gauge similar to that used for Figure 1 is indicated in Figure 2. The gauge readings were found to be within five to ten degrees of the factory calibration marks from 160°F upward.

The four-cylinder, two-liter cars without console used two different combination instruments with oil temperature gauges. The original gauge of this type (914.641.101.30) was used until the end of the 1973 model year and pictures of it show a wide red zone similar to the 1973 console gauge. In 1974 and later cars, an updated gauge, 914.641.101.50, was used with a smaller red zone. I was able to borrow one of the 1974 and later gauges and found, like the 914/6 and 911 gauges, it had factory calibration marks on the edge of the gauge face indicating that the bottom of the white scale was 30°C (86°F), the beginning of the red zone was 156.7°C (314°F), and the middle of the red zone was 170°C (338°F).

Figure 3 shows the 914/2.0 combination instrument and the oil temperature calibration using a 200°C sender and the same method as for the console gauges. The results were very close to the factory calibration marks: the calibration thermometer indicated 308 °F at the beginning of the red zone instead of 314, which seemed within the accuracy of the method and gave some confidence that the rest of the numbers weren't too far off. The overall calibration of the combination instrument was also reasonably close to that of the console instrument with the smaller red zone. In the gauges checked with the stock 200°C sender, the red zone starts at approximately 300°F. "


it sounds like my 914/6 combo gauge may/should be using the 150 degree sender for oil

and this gauge may require a 200 degree sender

where do I buy that sender at?
is it something Porsche or pelican would sell new?


thank you for the link!
I just did an oil change (have not even started the car yet)
so I may wait to pull the taco until the next oil change.. . see which sender I actually have and install the 200 one at that time.

I agree.. the fuel seems like a no brainer as I too believe all of the fuel tank senders should interchange.

brant