Never mind figure it out, I see there are two styles of fans, one for the 3 row crank pulley (zx power steering) vs the 2 row. I must have picked up a zx fan at a JY at some point, had it installed on my spare engine, and was using it for a comparison to my daily. The fan clutch is not an issue at all.

Edited February 17, 20215 yr by Dave WM
figured it out

figured it out, see 1st post

Edited February 17, 20215 yr by Dave WM

I recall using this to my advantage on my old car with Megajolt ignition. The larger offset ZX fan made room for the trigger wheel and sensor.

I had to find the bigger offset fan for my Super Damper.....I found one with factory spacers.....gave me the clearance I needed. Curious if that came from a 280ZX with 3 row? Anyone seen these spacers?

I am still a bit confused as a buddy sent me some pics with his setup and it seemed the Z fan (mount ring closer to the back or so it appeared) fit much better into the shroud.

I am going to pull the bottom shroud off, pull the fan, take the fan clutch off and do some measurement. My setup is stock, with a 3 row rad (after market copper brass), two groove crank pulley and the fan sits outside the back of the shroud about 1"

that's 5.5 inches from the back of the core support at the top to the back of the shroud.

with ZX  fan (I presume) mount ring offset towards rear of fan. I like this fit much better, still have about 1" clearance fan to rad

 

 

hmm based on the slope of the shroud on the long sides, it looks like the air would feed in at the tip edge of the fan rather than in front of the fan. I may go back to the original. going to stop by a local auto parts place and confirm the dimensions of the AZ fan to a different make, just to see if  it was shallow.

That looks Good.

just seems odd Yarb that I needed to do this. check your distance from the front of the rad where it bolts to the core support back to the end of the shroud. Only thing I can think of is my rad maybe thinner than some others? The fan is actually completely inside now maybe 1/4 inch inboard of the shroud.

Didn’t you recently change radiator? I thought about asking you if the radiator was thinner, but seems like you would have noticed that much difference between the two.