Clutch Fan

[sky20det]

i recently founf out my clutch fan wasnt kicking on properly and helped my car to overheat.

my one had the original 1990 rb20 clutch fan on it and was replaced with a fan from a 1989 model. blades are definately differnt as i had to trim them to get them to fit under the cooler piping, whereas my original one did not have to be trimmed.

now my car sounds like those old falcons. fan is kicking on a lot but it sounds a bit stupid at times, but has fixed my overheating problem.

now my question is: do different fan blades make different noises. im talking in louder and quieter. i like the fact that the clutch fan i have now is working properly but the blades are just too dam noisy. my fan that i took off had evenly distributed blades whereas the one i have on it now has different looking ones and they are not distributed around the centre evenly. its just the way it was made.. if you guys understand that.

[MANWHORE]

maybe, considering they spin so fast, since you chopped it, they might spin wonky.

other than that, maybe the clutch is about to shit itself

[RB30-POWER]

"irregularly placed cooling fan blades bring new quiteness"

thats a quote from Nissan marketing material.

i know exactly what you mean, long story short that type of blade should work better and be more quiet, then the even spaced design.

how many blades 7 or 9 on the fan you have?

[Kinks]

the older fans had less sophisticated profiles which meant they were noisier.

my R33 fan sounds efficient and powerful, when it locks up. my R31's fan made it sounds like a falcon, just chopping at the air and making noise.

[sky20det]

all clutch fans for rb20, rb25, rb26 and rb30 will fit on eachother?

[sky20det]

the 7 blade un-evenly distributed one sounds like a falcon. that fan is engaging very often on my car. could a clutch fan thats on most of the time also be faulty? or is it only when it wont engage then its faulty?

[fredzz32]

when i chopped my fan blades for the cooler piping on an 89 r32

the car sounded like a van when taking off. the irregular cuts create much more noise, it was extremely loud! gone to thermos now almost silent