Thread: 4.0 v8 closed loop temperature

its 60 or 65 degrees.

rave has the answer somewhere

I will watch my Ultraguage for an answer this morning mate. Cheers

Its a lot lower than 80,,
may even be lower than Eevo

Part of your Preventive maintenance should be either changing head gaskets(to mls) or at least retensioning.
plus the usual maintenance on hoses.
plus an Engine Saver type device.

Sorry mate. I forgot until my last trip where the truck had cooled down to 67 and on start up (67) it was closed loop already.

Cheers

Originally Posted by ozscott

Sorry mate. I forgot until my last trip where the truck had cooled down to 67 and on start up (67) it was closed loop already.

Cheers

Thanks mate, looks like im pretty safe then. Does your scan gauge tell you?

Originally Posted by Pedro_The_Swift

Part of your Preventive maintenance should be either changing head gaskets(to mls) or at least retensioning.
plus the usual maintenance on hoses.
plus an Engine Saver type device.

Thanks for the reply Pedro, as part of the modification i am adding an over-temp alarm (90 degree celc), and a VDO temp gauge. I will be re-tensioning the heads soon when i have the intake manifold off for a LPG conversion.

Research shows head gaskets wont directly impact liner slip, many people contribute liner slip to relatively high running temps in a alloy block with sub par factory machining techniques. the alloy block expands at a higher rate than the iron alloy liners, Rover catered for this and added a crush on the liners (inserting cold liners into hot blocks while manufacturing, once everything cools, the liner is not able to move). Common sense would dictate that at as engine temperature increases, the crush between the alloy block and the liner decreases because of the different expansion rates.

My engine as 130,000km on it, and has been serviced well, i have caught it before it has slipped. This whole exercise is to test how long the engine will go without slipping a liner while operating at lower than factory temperatures.


Unfortunately lowering the engine temp might increase the fuel consumption, as well as engine wear. but we will see. And chevy style thermostats are only $15 from supercheap so i can change them out without hassle.

Ultraguage mate but scanguage will also do it. Ultraguage is my weapon of choice mainly because you can set an audible alarm for any temp and also screen.

Cheers