Trimmed Fan Blades.....alot Of Neg. Feedback

[nsta]

Hey guys, just trimmed down my fan blades to clear my fmic i/c piping, i hear no end of ppl telling me they will run out of its efficiency as they are not all perfect, and one even said the water pump will die and that it wnt last any longer than 2 months!!!

What are your thoughts on all of this?, it was part of the HYBRID instructions so i couldnt see it being that big of an issue?, maybe an electric/thermo fan could help?

[GKTECH]

We've sold over 200 Skyline kits between the genuine Hybrid and Hybrid copy. I have NEVER heard of anyone having a noticable difference in water temps.

If you do experience any noticably bad differences maybe consider going with a thermo or 2.

Greg

[Beeble]

near 40 degree days, hard driving, peak hour driving, temp has never budged from what it was before the blades were trimmed.

[ICER33]

installed a hybrid cooler and the intsructions were to trim the blades. trimming the blade causes it to become unbalance unless laser cut and is perfect on every blade. it cause extra stress and i have been told it is a really stupid thing to do by mechanics at various workshops.

just install some thermo fans like the davies craig ones.

[Mr_G]

Ive had a hybrid core for over a year now, and my blades were trimmed back abit...

No dramas, my fan is still there, and compared to my mate who has a thermo fan, i still get better water temps than he does esp on the hot days

[siddr20]

ICER33-- hmm what rims are on that car in your display.. anychance u can send me that pic..

hmm anyways not from my own experience, but from sein it on friends cars, hes had no problems at all.. Has had the hybrid kit installed, with fan blades cut.. been over a year now.. no dramas at all.. n its a daily car, with all mods on.. so yea..

[siddr20]

hahah MR_G, didnt realise you msgd... well im talkin about MR_G in my reply above..

[WazR32GTSt]

my blades have been trimmed also when my FMIC was installed.. no problems for me a year down the track

its not exatly a lot of rotating mass we are talking about here..

just because a mechanic says something, doesn't mean they are right.. most mechanics just regurgitate what they have heard before (from someone else), rather than have the ability to research an idea to determine if its actually plausible..

[GKTECH]

my blades have been trimmed also when my FMIC was installed.. no problems for me a year down the track

its not exatly a lot of rotating mass we are talking about here..

just because a mechanic says something, doesn't mean they are right.. most mechanics just regurgitate what they have heard before (from someone else), rather than have the ability to research an idea to determine if its actually plausible..

<{POST_SNAPBACK}>

EXACTLY!!!

I have seen MANY cars with trimmed fan blades and have seen no noticable difference. It drives me nuts when I hear *mechanics* say that it will cause problems... errrrrr

[Al]

After 4yrs, with a trimmed fan, my pump decided to start leaking, i honestly think it had more to do with the fact that the car is now almost 12yrs old.

According to my ecu, my engine temp stays at 84deg on a "usual" day and about 89deg on a hot day.

Look at it this way; your car is probably 12yrs old, if it goes (some time in the future) buy another genuine pump ($105 from Nissan dealer), then while the fan is off, decide whether you want to install thermo fans.

It is recommended to replace the pump after 100,000km, but not really crutial. When mine went, water only dribbled out, once the engine was turned off and enough pressure built up. Only noticed it the next day when i saw a small puddle (sauce pan size) under the car. My overflow and radiator were still full, so it didn't leak while running. Other experiences may be differant, but i dought it will "blow" causing major issues.

[nsta]

hehehe, i too hate "mechanics" speaking their garbage w/o actually having tested it out before in the real worl!!!, thanks again guys, i too have had no problems whatsoever, should i keep looking at the stock water temp gauge to make sure all is running fine?

[Dale FZ1]

Mine was trimmed back about 20mm (by me), run successfully for the last 12500km. Same result - does not overheat, vibrate etc.

The one word of advice is to make sure you radius your corners similar to stock. If you leave them cut off sharp then apparently they make a lot of noise.

FWIW, my mate runs a rally car, and finds that the engine driven fan WITH shroud is far more efficient - at controlling temps - than thermos. The downside of course is parasitic drag when it is not required; even with a clutch hub.

cheers

Dale

[7yphon]

IS installing a Thermal fan that bad??? Also wouldnt you save a little HP by installing a Thermal fan?

[Dale FZ1]

IS installing a Thermal fan that bad??? Also wouldnt you save a little HP by installing a Thermal fan?

<{POST_SNAPBACK}>

No; and Yes.

The original question was whether there was a problem with trimming blades on a stock fan.

Properly installed thermos will work well, but at a cost.

cheers

[LBR33]

if you are still worried get your radiator flushed and all the builtup blown out, i noticed a resonable temp drop when i did mine.