All Things Chev

[AB]

Forgot to mention, on our trip to USA they all supercharge them apparently and rarely turbo.

We ran out of time to find any "experts" on the engine but this was the general norm in asking people we saw had them in their cars.

[Gecko17]

Forgot to mention, on our trip to USA they all supercharge them apparently and rarely turbo.

We ran out of time to find any "experts" on the engine but this was the general norm in asking people we saw had them in their cars.

I wanted to supercharge mine but was told that to suprecharge it, I would not only need a supercharger but new heads as well as the heads couldn't handle the heat/pressure... Simply became too costly to change...besides, for that money, I'd rather get portal axles.

[FNQGU]

ET - can I ask what normal running temp readings are you getting on your Engine Guardian? What sort of ranges are you seeing and what is your alarm set at?

[the evil twin]

ET - can I ask what normal running temp readings are you getting on your Engine Guardian? What sort of ranges are you seeing and what is your alarm set at?

Last Q first;
I have my Engine Coolant thermocouple attached to a bolt on the outlet housing
I have the initial warning set to 85 degrees
The G'box thermocouple is attached to a bolt on the G'box oil pan
The cooling fans on the Tranny Oil Coolers are set to come on at 75 degrees with a manual override if I want them continuous
That alarms are set for an initial warning at 90 degrees

Normal temps and ranges are hard to specify as it varies so much depending on what I am doing, ambient temperature etc

Around town with no load maybe 60 to 70 at the most for both

Towing maybe 70 to 95 G'box and 75 to 100 Engine but they aren't related IE if it is hot, terrain is undulating and the TC is locked then engine will be high in the range and G'box low to mid range.

If it is hilly and TC unlocked then engine temps drop maybe 5 to 10 and G'box rises maybe 15 to 20.

4x4 work they are all over the range.

I have checked the accuracy with a laser temp gun and both agree within a degree or so.

Obviously the thermocouples are not measuring the temps of the Coolant and Tranny Oil.
If there were temp probes in the fluids the figures would be different.
That is OK with me because I am using the watchdog as an operating alarm so to speak.

If one wanted a watchdog to directly monitor fluids then you need different thermocouples and sampling points.

[FNQGU]

So you set the second Engine Guardian sensor to the Tranny and don't utilise the tranny temp reading on the Compushift II? Is there a reason you chose that? I generally keep a close eye on the Compushift readings for temp but to be honest I am not exactly sure where that sender unit is located. I had assumed it was in the pan.

I was half thinking of linking the second sensor to the Oil Pressure, as although I would prefer a separate gauge, I don't have a nice neat place to put one.

Thanks for the info on temps too. Will give me something to compare.

[the evil twin]

I am not running a Compushift but would be keen to know what fluid temps you are seeing.
My TCU is a GM Supermatic

The watchdog I have installed has 3 inputs, 1 and 2 are thermocouple and 3 is switched.
1 and 2 are the Gearbox and Engine temps and 3 is the Engine low oil pressure
All 3 can be used to automatically switch relays/fans/whatever
All 3 can be programmed for audible alarms as well as visual

[FNQGU]

My TF temps will sit around 80-87c once warmed up and just driving around town etc. On a Highway run with TC locked it can sit in the low 70's to low 80's.

On my recent run up the Creb Track in hot weather, and after a lonnnnnggggg steep climb in Low 2nd, it rose to 97c, which to me is getting on the hot side. I have two coolers, but to be honest, one of them is badly positioned and I am going to move it when I get back. I am also going to fit cooling fans on both. Should have done it in the first place but Wholesale Automatics assured me I would not need them....(maybe in Victoria!). I also have the Nissan box, just with the Nomad Valve Body and some upgraded friction plates, and it has less TF volume than the Chev Auto by a couple of litres.

I was looking at that link you posted to your Watchdog/Guardian (whatever they call themselves) and was considering the same unit, only with two sensors instead of three. I was also half thinking about the Engine Saver low-coolant alarm that some others have fitted, but haven't made any final decisions on either or both together.

[the evil twin]

Yeah, those temps kinda gel with mine.
I admit I don't pay all that much attention as I rely on the alarms and if the alarms aren't going I just boogie along doing whatever I'm doing

If you can already monitor your Tranny temp in some way shape or form then I agree and wouldn't bother with a 3 channel watch dog.

I like your idea the two channel unit for monitoring the engine as it will do temp and oil press.
I thought about the low coolant alarm but decided against it because you don't necessarily have low coolant before you begin to cook an engine.

No biggee tho... they all work

[Ricky]

My old man had a recom 6.5ltr put in nad after a year had to have it replaced.

[FNQGU]

Thanks Ricky....