The first fan clutch I replaced in my '89 was at about 70K miles and I purchased one
that had a lifetime warranty so I got a free one at about 140K, 210K, and 280K, but the one
at 280K had a higher temp setting than previous clutches and combined with the higher
temp thermostat (170 farenheit 76.5 celsius) that nissan now specifies for my '89, I have
at least one cracked head, (water droplets and chocolate milk looking oil in the oil filler cap).
My vehicle came with a 155 degree farenheit (68 celsius) thermostat and mating fan clutch
and had run perfect with that combo. I don't think it would do any good to have a 155 t-stat
with a fan clutch that doesn't start pulling air thru the radiator till the air temp hits 190, so what
I would like to do is find a good 155 degree t-stat and modify the copper thermal coil on a new
fan clutch to match. Any help in locating a 155 t-stat for my '89VG30i would be greatly appreciated.
Thanks, 89VG30