Low Temp Fan Switches

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So Cal Mark

Low Temp Fan Switches

Post by So Cal Mark »

I now have low temp fan switches available; both 180F and 167F are listed in my webstore in the cooling system section.
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COMING SOON! external thermostats that bolt together so the t-stat is replaceable in the housing. Not only will this make the t-stat serviceable, you'll be able to choose various temperature ratings.
The engineering drawings are done and I should have the units available just after the first of the year
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Turbofiat124
Posts: 183
Joined: Thu Sep 29, 2011 5:18 am
Your car is a: 1980 Spider 2000 turbo
Location: Kingsport, TN

Re: Low Temp Fan Switches

Post by Turbofiat124 »

COMING SOON! external thermostats that bolt together so the t-stat is replaceable in the housing. Not only will this make the t-stat serviceable, you'll be able to choose various temperature ratings.
The engineering drawings are done and I should have the units available just after the first of the year


I would be interested in that!

Might I add, will there be a bypass port so it makes bleeding the cooling system easier? I tend to think that when the cooling system is refilled, there is always an air pocket between the thermostat and lower radiator hose. I always have to run the system through 2 cycles before I get the air purged out.

Also using the no-spill funnel Lisle 24680 Spill-Free Funnel makes it easier.

First I let the engine heat up, then if the engine starts to get's above 190F and the fan won't kick on, I shut the engine off and let it cool down for about 30 minutes. By that time the thermostat opens, then I open the bleeder screw and hear this swoosh sound and observe the coolant level drop from the funnel and the air should be purged from the system.

I realize you can insert a flat head screwdriver and bleed off the air but I'd think a small bypass hole would work just as well. But I think the in-block thermostats have a bypass hole anyway. Just not the externals.
klweimer
Posts: 550
Joined: Tue Mar 27, 2012 7:45 am
Your car is a: 1982 Spider 2000
Location: Arvada, Colorado

Re: Low Temp Fan Switches

Post by klweimer »

I use the Lisle funnel as well. Every Fiat owner should have one! I leave the thermostat out of the lower radiator hose and fill up the radiator until the coolant is just below the top of the hose and then push in the thermostat. This reduces the air block problem below the t-stat.
Kirk
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