Outer Limits 4x4 Board

What size thermos can I use on an MQ to replace standard viscus fan?

Get yourself some twin thermos from ef/el falcon.
They fit perfect and draw a bunt load off air.

Dazza

depends on what motor you are running really - 6 cyc petty motor - 12 inch or something V8 - twins or single biggun. Don't bother with diesel but hey.

Got loads I am trying to get rid of if you want cheap - got half a dozen and got twin set ups too - beer money really. $20 each or something?

PM if interested.

Mk

I have Ford AU Falcon Twin thermos on my MK. They fit perfectly with some simple trimming. Can get some pics if you want.

Yes post some pics of your thermo fan setup. I want one for my GQ but just want to look at yours.

Was under the impression a clutch fan works better then thermos - anyone have a reason for fitting thermos??

I have been told the same but can not see how just adding the clutch could help my low range cooling. I was thinking twin 12 or 14 inch thermos for mine with a switch for auto, off. That way I can turn them off when water crossing.

Anybody else got something to add to this??

Have been told by many people different things and I am unsure what to do.

foad wrote:Was under the impression a clutch fan works better then thermos - anyone have a reason for fitting thermos??

V8 Conversion, couldn't be bothered making a custom shroud.

In the L28 its fine to run the clutch hub fan.
The only reason u would change it would be to get a little more power out of the motor as the fan draws a little bit of power.......
L28s usually cool fine at all speeds cept flogging the nuts off of em.

The SD33 diesel, however, Does get very warm offroad as the fan clutch isnt drawing enough air at slow speeds and lowe revs for it to cool.
If in the diesel, id be running the fan hub as it will cool all the time cept driving in low range at low revs etc....

AND get a 16 inch thermo for the front of the radaitor to help the motor out when offroad, as u can turn them on and off and they will be drawing full air all the time.

I have TWIN 16 inch thermos on mine now. IM running 308 V8 buti found that at low speeds and idle the fan wasnt drawing enough air, so i have got a thermo on the front....

The reson i stuffed the main fan off alltogether is i wanted more power back in the motor, and SH1T IT MAKES A HUGE DIFFERENCE
So i have a full cowled davies craig job in there now.....

All in all i have dramas with cooling in the V8, but it cools better on the 2 thermos than the engine fan and i have more power...... My radiator needs another core

hope this helps.

Screwy

Hey Screwy,
I have a 3 core i mine which is only about 6 months old. I also have bad cooling problems while at low revs or slow low range driving. I might have a look at your truck if i see you at TTC.

A lot of people have advised me not to do it but I cant see why not. Are your thermos next to each other or is one on the front and one on the back.

Ok I run A L28 wanted to run thermos to cut down engine noise have slightly more power and be able to switch of fan when doing crossings.
I am only able to turn a spaner and thats about it, so what is the easiest to put in?

Paul U wrote:Ok I run A L28 wanted to run thermos to cut down engine noise have slightly more power and be able to switch of fan when doing crossings.
I am only able to turn a spaner and thats about it, so what is the easiest to put in?

Ford twin thermos, very simple mods.

I have one on the front and one on the back

Missed me at TTC, either way i wasnt in my MQ

Just the GQ

foad wrote:Was under the impression a clutch fan works better then thermos - anyone have a reason for fitting thermos??

here in the philippines. we usually add a fan in front of the condenser of the a/c to increase the cooling. but for the engine, the clutch fan will suffice.

if your problem is cooling your ute. maybe best to check the condition of your clutch fan. if might need silicon oil.

i have an MK SD33T and since i did the body lift my car gets a bit warm on long drives through hilly areas and i have a set of AU thermo's to fit on my vehicle do you guys think they would help?

as said above, AU twin thermos will do the job 100 percent better than standard clutch fan.

screwy

Sorry for taking so long. Here are some pics of how well the AU thermos for the MQ/K radiator...

Can get others if you want.

nice fit arent they.

U got L28 radiator hey?

has it been re corred at all? or still standard? how well does she cool?

screwy

Screwy_ScrewBall wrote:nice fit arent they.

U got L28 radiator hey?

has it been re corred at all? or still standard? how well does she cool?

screwy

Yeah they are an awesome fit. It is a P40 radiator because the inlet and outlet are bigger than the L28 radiator and matched the Chev hoses. It is a standard 3 core job, it is fine up to about 100km/h then starts to get a bit warm, so I'm going to put some bonnet vents on.

Im gunna get another core put into my radiator for that little bit of help.... ive tried lots of combinations of cooling.......
it cools but runs very hot when it is getting a work out

so you recon the twin AU thermos would fit that well on the standard SD33T radiator? my truck also get a bit hot during slow hill climbs and on long highways

Rosey55 wrote:so you recon the twin AU thermos would fit that well on the standard SD33T radiator? my truck also get a bit hot during slow hill climbs and on long highways

Yeah they should do. I think they are the same dimensions.

yeh all the radiators are the same dimensions, just the filler and top and bottom hose locations, but this wil have no bearing on the fans as per the above pics

screwy