jp928
Well-Known Member
Has anybody looked at this possibility? The viscous fan on P6B has 13 blades, the hole in the radiator cowling is 460mm dia. The Fan I have (Discovery) is 435mm dia, 11 blades, but they are quite a bit wider than the P6B viscous fan.. On the viscous coupling the assembly is 70mm deep. The coupling is ETC1260, the fan is ETC1275. Could end up cheaper than a ERC2810 these days as long as the fan finishes up the right depth into the shroud. Pretty sure these viscous units are designed to lock up (drive) based on temp coming along the pump shaft, rather than rev limiting. The only caveat is that on a Disco, after lots of heat cycles the fans are known to start cracking, and occasionally shed a blade.
Pic is a Disco fan and viscous adapted to a 928 fan shaft, by cutting the male LH thread part off a Disco pump, pressing it onto the 928 shaft.
On looking at an SD1 pump (early type with viscous bolted onto the shaft like a P6B) the snout looks much longer...?
Pic is a Disco fan and viscous adapted to a 928 fan shaft, by cutting the male LH thread part off a Disco pump, pressing it onto the 928 shaft.
On looking at an SD1 pump (early type with viscous bolted onto the shaft like a P6B) the snout looks much longer...?
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