Jaycar do a thermo-switch kit, fully adjustable with hysteresis, etc. I don't believe they are too expensive either.

The wiring isn't really that hard, IMO. When I have some time/money, I'll do it on the KE55 and do an article for you guys.

As only down side ATM is the radator needs to heat up before it switches.

Cheers

Cameron

 

By the time the fans would need to come on the radiator would be hot anyway :bash:

I've been digging, given that I'll be fitting up my Fan this weekend and I don't want to spend 60 bucks on the Davies Craig unit.

 

Cam, did you use the Jaycar thermal breakers with a preset temperature. Like This?

 

I can't seem to find any adjustable ones here, you got a part number for it?

I bought the Davis Craig unit... Its good and everything but I'm not real keen on the bulb thingo that you slot in the top radiator hose...

 

On KE70 4K-Cs you have the emission hoses going into the temp thingo that screws in to the thermostat housing...

Couldnt you just replace this with a switch that would fit fit? Would be so much simpler and neater....

 

You also have the temperature sender that is also screwed in to thermostat housing....

 

EDIT: Just read first page, my question is answered lol... Go to wrecker and find a factory switch that fits in... hmmmmm

Edited February 10, 200917 yr by Tally

ok so I found this:

 

http://www.toymods.net/forums/showthread.php?t=5125

 

http://www.tridon.com.au/Products/Product....=483&P=2014

 

apparently, by what the tridon website says by the parts finder page is that KE70 4K has a M16 x 1.5 thread.

 

There are only a few in that type but I guess it would be a way better option then the davies craig setup..

 

Also I have a question. What temperature is the ideal point to have a thermo fan cut in... and at what point is it on the stock temp gauge...

 

Cheers

Tally

philbey Sorry I lost this thread yes I have done 2 thermo fan conversions now KE15 and a KE30 so ill try to get ass into gear and write a how to and a few ways it can be done easy for you all tonight

 

Also Tally KE7X came with thermo stock in EFI models and that. But go to super cheap ask for a new sensor :cool: You will be out of pocket $82 if you buy it at my local super crap.

 

So that is an expensive way to go......But I did it this way and Jaycar way. Jaycar weigh heaps cheaper ill add all this to my FAQ doova.

 

Stock point on the K motor factory thermo was 74 degrees C. I use 85 degrees C on my system but on the KE30 and 74 degrees C on the KE15.

 

Cheers

Cameron

I did mine this way.

 

With this you use a Toyota thermo switch available on any mid 80's on Toyota.

 

If I managed to work it out, you can.

Parrot, thanks for that good link, I'll set mine up with a manual switch for the moment and head to the wreckers for a pocketful of thermo switches!

Have a look at the various thermostat housings from assorted Toyotas of that period, SV11's SV21's, AE82, cressida's etc etc. I assume you have a K motor. I would not be at all surprised if you could find one that fits the K bottom housing and this means you have the thermo switch already in place.

 

Of course you also need to check the top hose outlet direction is suitable.

 

I had a factory rear drive cooling setup on my AE86 4AGE, and have incorporated a 4AC AE82 top section to do just this. Various other Toyota engine types had top sections that fitted the 4AGE just as well, only the hose outlet wasn't pointing where I wanted it. Bolt pattern was identical.

Edited February 10, 200917 yr by parrot

My local wrecker wants $20 per thermo switch just letting you know.

 

As He told me he knows what they retail for.

 

Also Hyundi ones work good also and a million more there all similar.

 

Cameron

20 Bucks. Sounds fair

 

I just had a look on the Tridon website, the Camrys and later model corollas all run an 82 degree thermostat. 3/4ks run the same, but 5ks run 89 degrees.

 

I think I'm running an 82 Degree anyway, so if I run a thermoswitch from one of these later cars, I should have the right combination. More than likely the later model thermostat housing with the extra port for the thermoswitch will have the right thread too.

 

Cheers.

The thermo stat housing with 2 threaded holes will fit a M16 X 1.5 sensor.

 

I run a 85 degree switch.