I’ve not changed my fluid, but I do wish I had a little bit more engagement at idle.
I don’t overheat, but it’s really hot here in Texas.
I don’t overheat, but it’s really hot here in Texas.
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It's that time of year again.
@Godwin @HemiAlex @John McVicker do any of you have update on the fan clutch oil mod? I'm ordering some 20000CST oil today. I have the original fan clutch (I think FCT-017, red if I recall correctly) in storage and figured I'd open it up and mod it, then swap it in place of the FCT-049 I've had installed for a few years.
So I did a little extra reading on this today. Found a fairly decent explanation of the screw "settings" on this page:
Tuning and Understanding your Toyota Viscous Fan Clutch
Landcruiser or Hilux overheating? Your factory fan clutch is probably under-filled and incorrectly set from factory. Fix this first and you may save a lot of time chasing issues. (4 Runner or Tacom…neuralfibre.com
Seems Godwin was on the right path to tuning the FC to lock up earlier than the stock setting.
Based on this info from the above link...
View attachment 3352181
I took a closer look at Godwin's photos from the first page.
Initial "stock" setting, we can see that the valve would be closed over the outer hole in the rings (the 0 position from the above graphic) View attachment 3352185
When he moved the screws to the right, it appears the valve would be partially open especially at the outer hole located at the rings, akin to the A position from the graphic. I would assume this would allow for an earlier lockup given the same oil weight.
View attachment 3352187