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After finally starting my engine the other week and getting it mot'd on Thursday. I have been trying to use it yo get some miles on it. I'm now due my first oil change

 

 

Noticed when driving my temps are pretty good.. water temp 75-77 deg c rising to 80 in traffic. And my oil temperature 60 deg c... the oil temp is what I want to check. Currently using mineral running in oil. Is that a good temperature?

Obviously no boosting so temps will be lower. .

Took it for a nice drive through the new forest today. Them temperatures were stable the whole journey. Drove great..

 

Had a couple of puffs of smoke out of the exhaust but I can expect that right? Engine only done approx 60 mile since full rebuild. So rings not bed in...

Edited by hellraiser

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Seem to remember 82c is "operating temp" for the coolant. Are you running a larger oil cooler, would expect oil temps to be mid 80's with these ambient temps even at low load

  • Author
Seem to remember 82c is "operating temp" for the coolant. Are you running a larger oil cooler, would expect oil temps to be mid 80's with these ambient temps even at low load

 

I have a z1 full flow oil cooler kit with 16 row setrab cooler

 

The water ways on the block have all been flowed and deflashed

60 for oil is a bit low, but probably because of the improved cooling (and also because the engine doesn't have to work very hard yet)

Are you using a sandwich adapter or the original oilfilter tree connections for the cooler ? (or: is the oil flowing through the cooler always or just under pressure)

 

Maybe blank the oil cooler with a piece of cardboard/plastic for the time being and see if that helps to get the oiltemp around 80 while running in the engine..

  • Author
60 for oil is a bit low, but probably because of the improved cooling (and also because the engine doesn't have to work very hard yet)

Are you using a sandwich adapter or the original oilfilter tree connections for the cooler ? (or: is the oil flowing through the cooler always or just under pressure)

 

Maybe blank the oil cooler with a piece of cardboard/plastic for the time being and see if that helps to get the oiltemp around 80 while running in the engine..

thanks lymon

I'm using a thermostatic full flow sandwich from z1 motorsport... I have done 60 miles now so I should be changing the oil now as per your guide .

Edited by hellraiser

Coolant temps I get 75-80 degrees during normal driving, I see up to 90-92 degrees when driving it hard for a reasonable amount of time. This is in the higher ambient temps we have been having. (Uprated radiator, no fan shroud or under tray at the moment....... I know...I know, just haven't got round to fitting it yet,)

 

I am running a Setrab Oil cooler, (similar size to yours IIRC), from memory oil temps never higher than 80-85 degrees.

Edited by bigh

Have you checked if the oil cooler is warm ? it shouldn't, as there shouldn't really be any flow through the cooler below 70-80 C (most thermostatic sandwich plates open at 80+) and maybe the thermostat is faulty ?

Seem to remember Jaffa having an issue with a Z1 oil cooler thermostat aaaaaaages ago.... Maybe wrong though

  • Author
Seem to remember Jaffa having an issue with a Z1 oil cooler thermostat aaaaaaages ago.... Maybe wrong though

 

Can you remember the problem nick?

I think he had a faulty thermostat that wasn't opening. I may be horribly wrong, but im sure Jaffa will correct me when he sees this

My oil temp today on the M11 was between 90 - 100

2002 Porsche C2 996 3.6 
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1995 Nissan 300zx TT Crashed 🥲

1997 Jaguar XK8 Scraped ☹️

  • Author

Took her for a run last night and drive her to work today . Oil cooler getting very hot. I'm not convinced by my oil temp gauge. I could hardly touch the cooler! Driving home no boost (obviously ) and it peaked at 70 deg. I might try an alternative location for sensor

I recon due to your location and cooler design your measuring the cold side so to speak. As its full flow design and it cools the oil before it passes through the block. So it's reading the cooled oil not the average. And it's constantly being cooled, stay stuck open.

Time to test;

A. the accuracy of the gauge or its sender,

B. the temp differential between pre and post cooled oil.

 

Is it a thermistor style sender?

Edited by Stephen

  • Author
I recon due to your location and cooler design your measuring the cold side so to speak. As its full flow design and it cools the oil before it passes through the block. So it's reading the cooled oil not the average. And it's constantly being cooled, stay stuck open.

Time to test;

A. the accuracy of the gauge or its sender,

B. the temp differential between pre and post cooled oil.

 

Is it a thermistor style sender?

 

Very good points made there steve! I don't think there is anywhere I can plum in the sensor pre thermostatic sandwich plate....... but in theory if the plate is working as it should then it's doing it's job and I'm getting an accurate reading of the oil returned from the pump through filter into block. So only logical point of another sensor location is directly into the sump itself as that is where the oil is pulled from.... I'm going to get an infra red thermometer and measure points around the sump etc... probably totally over thinking all this....

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