Engine temp

[rickbennett79]

I've just bought a 69 bay with a recently refurbed 1641 engine. What kind of temperature can you run to without experiencing overheating issues? I've got a gauge but I don't know when I'm red lining it. Obviously I've not pushed it too hard and after cruising at 55mph on the motorway for 20 mins, I slow down for a bit, but don't want to do any damage.

Thanks

Rick

 

[rlepecha]

Boil some water and check the sender in it. This will give you a Delta to work from when you read the gauge.

The location of the gauge also makes a difference, up to 10-15c of variation.

Typically they run at about 90-95c, and mineral oil doesn't start to break down until around 120c (ref. http://www.wildwestcycle.com/f_oiltempdegradation.html" onclick="window.open(this.href);return false but anything above about 100-105 indicates there is a problem.

I cant comment on temperature fluctuations around that 90-95c average, because I've had two engines that will not run cool, giving upwards of 120c oil temps in the sump with a calibrated thermocouple..

Sent from my C55 using Tapatalk

 

[StuF]

Mine runs at a steady 100c when cruising, did go upto 110c when in Spain and the ambient temp was about 35c
I have found its better to learn whats "normal" for your engine and monitor it that way rather than concentrating on an actual reading
Many dont like "worry" gauges but I would rather see something going south through a gauge rather than experiencing a catastrophic failure
Although I do have one or two installed :msn4:

 

[who?1]

Mine runs at a steady 100c when cruising, did go upto 110c when in Spain and the ambient temp was about 35c
I have found its better to learn whats "normal" for your engine and monitor it that way rather than concentrating on an actual reading
Many dont like "worry" gauges but I would rather see something going south through a gauge rather than experiencing a catastrophic failure
Although I do have one or two installed :msn4:

LIKE !

 

[bac2ba6]

Mine runs at about 100c as a rule at 60mph I have seen it nudge 115c but that was on a hot day fully loaded giving it some serious beans up a big hill , once at top soon calmed back down again

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[rickbennett79]

Thanks everyone. Mine was running at between 125 and 150 on the motorway, so sounds like I was pushing it far too hard, unless the gauge isn't reading correctly!

 

[StuF]

Always best to check the gauges accuracy with boiling water to get a baseline
Many of them over/under read - if it was 125/150 degrees your oil would be burnt and be like treacle as it starts to break down at 120 :shock:

 

[montypsx]

I'm with you stuF on this I would say the gauge is well out. If your temp is high check your timing is ok as this could cause it. I run a 1641 and sit at 60-65mph all day long with no temp issues.

 

[TheHewsonFamily]

Is there any benefit of running an oil cooler with a thermostatic valve to protect against high oil temperatures? You wouldn't want it cooling when oil temperatures are low but just to come into action when they start to rise.

Something like this http://www.machine7.com/section.php?xSec=2501" onclick="window.open(this.href);return false;

 

[Trikky2]

Something worth bearing in mind :-

Keeping an eye on oil temperature will warn you if the engine is running hot.

The heat is concentrated in the cylinder heads.

The cylinder heads are air cooled - not oil cooled.

Hence providing extra cooling for the oil will protect the oil from getting too hot but it will not protect the heads, valves and piston tops.

Providing extra cooling for the oil can therefore be "treating the symptom rather than the cause".

If the engine is running too hot it's wise to find out why and fix it.