Engine type 546/2 1500cc 3PC question ?

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Pascal Giai
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Engine type 546/2 1500cc 3PC question ?

#1 Post by Pascal Giai »

On a 1500cc 3 piece case engine type 546/2
Where do you connect the oil temperature sender ???
Any pictures ???

Thank you !

Pascal Giai

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Craig Richter
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Re: Engine type 546/2 1500cc 3PC question ?

#2 Post by Craig Richter »

In front of the oil cooler. A brass adapter screws into the case hole, and the sending unit screws into that. I'm about 1000 miles away from Speedy right now, so no pictures; but I'm sure there were some pictures on this forum just a few weeks ago...
 

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Ron LaDow
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Re: Engine type 546/2 1500cc 3PC question ?

#3 Post by Ron LaDow »

Craig Richter wrote: Sat Mar 16, 2019 1:32 am In front of the oil cooler. A brass adapter screws into the case hole, and the sending unit screws into that. I'm about 1000 miles away from Speedy right now, so no pictures; but I'm sure there were some pictures on this forum just a few weeks ago...
The one I owned had the gauge as sort of 'part of the car'; the 'connection' was a non-removable capillary tube, fed through the tunnel from the front end. Were there electric versions?
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Vic Skirmants
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Re: Engine type 546/2 1500cc 3PC question ?

#4 Post by Vic Skirmants »

Ron LaDow wrote: Sat Mar 16, 2019 11:04 am
Craig Richter wrote: Sat Mar 16, 2019 1:32 am In front of the oil cooler. A brass adapter screws into the case hole, and the sending unit screws into that. I'm about 1000 miles away from Speedy right now, so no pictures; but I'm sure there were some pictures on this forum just a few weeks ago...
The one I owned had the gauge as sort of 'part of the car'; the 'connection' was a non-removable capillary tube, fed through the tunnel from the front end. Were there electric versions?
Not that I'm aware of.

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Craig Richter
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Re: Engine type 546/2 1500cc 3PC question ?

#5 Post by Craig Richter »

Capillary tube gauge was stock with 546/2. Aftermarket electric gauges for the early cars didn't become available until much later, although both types install using same adapter. It would have been kinda hard to get the motor out if the tube wasn't removable, and I do remember removal was more than a little difficult!
 

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Ron LaDow
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Re: Engine type 546/2 1500cc 3PC question ?

#6 Post by Ron LaDow »

Craig Richter wrote: Sat Mar 16, 2019 4:08 pm [...]It would have been kinda hard to get the motor out if the tube wasn't removable, and I do remember removal was more than a little difficult!
I meant the gauge end, but it WAS a PITA to get the bulb 'sender' unscrewed and screwed back in. I didn't have a crow's-foot wrench and it was ~1/6 turn per wrench fit, given the angle.
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Vic Skirmants
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Re: Engine type 546/2 1500cc 3PC question ?

#7 Post by Vic Skirmants »

I thought the sender was basically a "thumbscrew" type. The brass adapter stayed in the case.

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Re: Engine type 546/2 1500cc 3PC question ?

#8 Post by Jim Liberty »

That is what the last one I did was set up Vic. ……...Jim.
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Craig Richter
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Re: Engine type 546/2 1500cc 3PC question ?

#9 Post by Craig Richter »

Porsche as usual had smart theory behind using the dead-end adapter: the sender probe doesn't actually touch the oil, and therefore no need to be super tight; but turkeys have always found ways to make life tough for the next guy...
 

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Ron LaDow
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Re: Engine type 546/2 1500cc 3PC question ?

#10 Post by Ron LaDow »

Admittedly, this is long term memory, but it's from about the time I remember R&Ring the cooler with the engine in the car; some memories stick with you.
This one regards reaching over the fan shroud in the oh, so generous spaces provided in a Speedster engine bay, turning the 'nut', flipping the wrench to get the 15* advantage from the offset in the open-end, turning the nut, etc., hoping the bleeding would stop soon...
It didn't help that it was some good-sized hex. 22mm? I didn't have a lot of metric tools at the time, so the wrench was some Imperial size which sort of fit. Regardless is was a large wrench being operated in a small space. Painfully.
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Re: Engine type 546/2 1500cc 3PC question ?

#11 Post by Donald Zingg »

Pascal

Here is the location for the sensor on top of the case.
As noted above, the sensor is permanently attached to the gauge via a long capillary tube.
The hex end of the brass sleeve plug is 19mm ATF - - - -
Attachments
Stoerk Sleeve Plug1.jpg
Stoerk Sleeve Plug1.jpg (388.18 KiB) Viewed 1366 times
capillary tube1n.jpg
capillary tube1n.jpg (480.25 KiB) Viewed 1366 times
capillary tube1nn.jpg
capillary tube1nn.jpg (428.6 KiB) Viewed 1366 times

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Pascal Giai
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Re: Engine type 546/2 1500cc 3PC question ?

#12 Post by Pascal Giai »

That's all I need to know !

Thank you for the detailed photos...

Pascal

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Wes Bender
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Re: Engine type 546/2 1500cc 3PC question ?

#13 Post by Wes Bender »

That arrangement is almost a necessity, considering the twist that you would apply to the capillary tube if you tried to remove the whole assembly at once.

(Said at the risk of someone suggesting loosening the gauge so it can spin in the dash too.)
Some days it's just not worth chewing through the restraints.....

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Re: Engine type 546/2 1500cc 3PC question ?

#14 Post by Ron LaDow »

Donald Zingg wrote: Sat Mar 16, 2019 11:26 pm Pascal
Here is the location for the sensor on top of the case.
As noted above, the sensor is permanently attached to the gauge via a long capillary tube.
The hex end of the brass sleeve plug is 19mm ATF - - - -
OK, now I'm left wondering if I somehow unscrewed the adapter or...
My memory says the adapter had an external thread, and a hex 'ring' which fastened the bulb to the adapter...
But logic says, there wasn't only one made that way, suggesting something about my memory...
That gauge may yet be in my possession, so I'm gonna retract all the claims until (if possible) I find it.
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