Modwise 2 stage cooling kit, HELP

[Harrytsg]

Could anyone help?

I can't search the forum as my internet is down so I'm having to work off a blackberry.

I want to fit the modwise 2 stage cooling kit to my 97 450 this morning, the instructions show the thermostat 'bulbs' should be fitted to the outlet hose on the drivers side (bottom hose), but the Bible shows them fitted to the top hose (albeit on a Griffith), could anyone point me in the right direction??

[530dTPhil]

Probably get more response if you put a title on the thread.

[slideways]

Harrytsg said:

Could anyone help?

I can't search the forum as my internet is down so I'm having to work off a blackberry.

I want to fit the modwise 2 stage cooling kit to my 97 450 this morning, the instructions show the thermostat 'bulbs' should be fitted to the outlet hose on the drivers side (bottom hose), but the Bible shows them fitted to the top hose (albeit on a Griffith), could anyone point me in the right direction??

I fail to see the problem the Instructions came with the kit follow them!
Where abouts in Essexchestershire do you hale?

[Harrytsg]

Phil - I did, but it seems to have got lost in translation from blackberry to the internet proper.

Slideways- Epping.

I have installed on the 'bottom' hose as per wodwise instructions, but it seems odd that the tter switch works off the swirl tank and therefore' top' hose, then onto temp sender and thermostat.

[Simon says]

In my opinion you get a more stable temp from the bottom hose area of the rad rather than the top hose most manufacturers seem to think so too

Edited by Simon says on Sunday 30th January 18:28

[blackchim]

I have had the Modwise kit fitted for nearly 3 years now. I have the probes strapped to the metal outlet pipe as per the instructions. I also wrapped a piece of heat shield material around the probes to stop heat soak from the Y piece.
Reason for putting it on the outlet pipe is to see if the water is being cooled enough by the rad, if not (as per the lo-hi temp setting you decide) the fans will therefore cool down further.

On hot days in traffic it does significantly reduce under bonnet temps and the engine is less lumpy as a consequence.

[Harrytsg]

Thanks for the responses,

Quinny, thanks for the link, I will have to wait until BT repair the phone line to watch it, as you tube is blocked on my work devices (blackberry included), they have the cheek to call it websense, nonsense more like.

[Barreti]

blackchim said:

I have had the Modwise kit fitted for nearly 3 years now. I have the probes strapped to the metal outlet pipe as per the instructions. I also wrapped a piece of heat shield material around the probes to stop heat soak from the Y piece.

Mine is fitted like this. I think.

Although I'm not sure what is meant by 'Outlet'
Isn't it like this
drivers side is the 'inlet' - ie from the engine and at the bottom of the rad passengers side is the 'outlet' - rad to swirl tank and at the top of the rad

Thats on my '92 Griff at any rate

The modwise temp sensing bulb is strapped to the drivers side

Edited by Barreti on Sunday 30th January 22:05

[spend]

'out' from engine is 'in' to rad, and 'out' from rad is 'in' to engine. Pretty simple really Ian.

Switching fans based on whether cool enough water is being returned to engine is the far better logic.

[Barreti]

So which is Outlet as above then?
Out from engine or Out from Rad?

I'd have said it was Out from engine and I think that is where my temp sensor is strapped (drivers side)

Mind you, I don't see it makes any real difference which side the sensor is. Its adjustable so you tinker with it until it is kicking in at the temp you want it to according to the temp gauge, and marginally earlier than the full fans would normally, whether its monitoring the In or Out makes no real odds surely.

[dog man]

I'm not really seeing the point of this kit, sorry I'm being dim..it's prob an excellent idea. So the differences are essentially the ability to have a) a low speed/half speed and b) to be able to set the temp switch manually yeah? So is it ment to try and keep running temps a bit more consistent?

[spend]

Barreti said:

Mind you, I don't see it makes any real difference which side the sensor is. Its adjustable so you tinker with it until it is kicking in at the temp you want it to according to the temp gauge, and marginally earlier than the full fans would normally, whether its monitoring the In or Out makes no real odds surely.

Consider blasting down the autobahn at mega kleptons and your engine can heat the coolant to 90c, without the fans its still coming back from the rad at 65c. Do you want the fans on?

[dog man]

Yep, agree. You can never have enough control over cooling! Cool Thanks. PS Quinny, is that you in the YT link? The Griff is well tidy! How do you get the shiny Y piece/manifolds are they special or just polished standard items?

[Barreti]

The temperatures are irrelevant though aren't they Spendy?

It could be that mine is the early kit which interfaces into the Otter switch so we are on different wavelengths here.
My Modwise kit just controls 1/2 speed and the Otter switch controls full speed. I have only 1 dial like the Kenlowe.
I ran the car to temp and waited for the fans to kick in, then set the 1/2 speed about 5deg cooler (which took a bit of faffing waiting for fans to kick in a few times)

So to answer your question: Yes, if my 1/2 speed fan kit says the temp requires it then even though they might not do much I would still want the fans moving because the next step is the fans full on.

Realistically, I hope I'd already have spotted the engine temp above the normal 90deg motorway speed norm and backed off though.

For all this talk of worrying about engine temps I have to say my Griff managed to deal with the 40deg heat of southern Spain last year far better than its occupants did.
There is no substitute for a clean and healthy cooling system.

[theaxe]

Here's a write-up from my install. HTH.

[spend]

Barreti said:

The temperatures are irrelevant though aren't they Spendy?

Thats a classic Ian, I have to quote it for posterity?