I decided to get myself one of these tridon fan switches for my 1J cressy while I was doing a whole bunch of work on it including a recored radiator & new extra fancy fans. I went for a TFS 106 (95 on 90 off) which is an M14 x 1.5 thread, then I found out I needed an M16 x 1.5 to screw directly into my upper sensor housing/coolant outlet.
So I ordered myself a 148 (same thing, 95 on 90 off), and as soon as I tried to tighten it up the bastard snapped clean off, leaving the threaded section in the housing & the other end in my hand.
This one comes with an O ring, so it's not really designed to be done up too tight, but I was using a copper washer & the only 22mm socket I had was 1/2" drive, so it didn't take much force at all to snap it, the wall thickness where it snapped wouldn't have been 1mm I reckon.
So I went and grabbed another one, & this time was very careful doing it up. It sealed ok & turned my fans on, but my temp guage (VDO elec type) never makes it to 90 let alone 95!
As a result my fans run almost ful time, which is giving me the shits.
So tomorrow I'm going to go & pick up a 157, which is a 100 on 95 off, and if this doesn't work I think I'll go back to the much dissed davies craig adjustable fan switch, as I've already spent about $70, not including the new one I'm getting tomorrow.
I'm sure my temp guage is accurate, (it's now installed in the upper radiator hose about 4" away from the fan switch) as it reads nothing (less than 40) until the thermostat opens then shoots straight up to 82 , which is what the thermostat is rated at, then creeps up to 88~89 when the fans decide to kick in. With the old radiator/fan/fan switch setup it'd sit on 90 quite comfortably until I gave it a thrashing and the fans would kick in somewhere between 95 & 100, but the old rad & fans struggled to bring the temp down to more normal temps.
So I was expecting with this new setup the fans would only kick in on the odd occasion when the spanky new rad couldn't cope & bring temps down pretty quick, but instead I'm driving around with the fans on about 70% of the time.
I'll let you all know how the new switch goes....
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