engine and drivetrain Three OIL sender (original + temp + press)

[FB73tii]

16 hours ago, carpediem said:

I've only driven a couple times since installing them, but I can see that the oil temp is much lower than the water temp.  At least for the trips I've done so far.

 

That is too be expected when the engine is not driven hard. Water temp rises quicker than oil temp when engine is started, since water getting heat from combustion. Oil takes much longer to warm up, as heat is being generated by friction in the bearings, as well as being influenced by block heat soak. It is recommended not to run an engine at high RPM (e.g., WOT) when cold, and here "cold" refers to oil temperature, not water temp.  Oil temp can exceed water temp when the engine is under heavy load for extended periods--that is why oil coolers are added to track cars.

[TobyB]

...and why we pay real attention to oil temp in the raceycars, too.  It can take 20 minutes of pooting around town on a cool

day for the oil to get up to 180.  On a cold winter day, it may not ever get up there if you're not working the engine.

 

t

 

[Xhrismar]

On 12/8/2016 at 9:21 PM, mike said:

VDO makes an adapter for their dual oil pressure sender (gauge and warning light) that is similar to the Parker Performance one that you picture, but with only one threaded opening.  

 

Truth be told, that location atop the head isn't the best location for an oil temp sender.  By the time oil gets up there, it's cooled off considerably from its starting point in the sump or oil pump.  If you don't have a tii and your car is a 71 or newer, examine the oil filter housing carefully and you'll notice a dimple cast or machined into the housing.  On a tii, this is drilled and tapped for the oil line that lubricates the injection pump.  On carbureted cars, it's just a dimple.  You can remove the filter housing, then drill and tap the dimple for your oil temp sender.  It then measures the oil temperature as it's coming out of the oil pump/filter.  And it's a lot less vulnerable to damage than a sender in the drain plug.  

 

mike

 

Mike

 

Maybe a picture of the modified oil filter housing? With the hole for the sender?