Since my fan clutch self destructed and ate the radiator I looked at lots of posts on electric fans and clutches. One of the items mentioned is that the viscous clutch from a M104 would fit on a M119 engine, but, you would need the M104 fan since it is 3 bolt vs M119 4 bolt.

Has anyone done this? M104 clutch is about $150 + $50 for a fan blade is still about $300 less than the M119 clutch. I assume the M104 fan doesnt pull as much air through the radiator. But I'm not sure that would be a big deal. The fan clutch shouldnt lock up very offen and with less air flow it will just be locked up for a bit longer.

So has anyone done this?

Paul