wouldnt fit at all, or were you just worried it would come loose? i think robs running a dayco on his NA?
Yes, the Dayco does have slots instead of bolt holes... but there's nothing wrong with that. It still centers itself on the waterpump pulley perfectly as it should and is held in place by the OEM screws just like the STD unit. Thread lock can be used on the screws to ensure everything remains in place at 7350rpm if need be. I did it. Comparing the Dayco to the OEM clutch fan, the dayco sits closer to the engine compared to the OEM unit. Not sure if that has any affect on air flow or not but it does blast the air out. Another thing to take into consideration. Overtightning the clutch fan screws is easy and will lead to breakage. Happend to me and what a pain in the butt. A 5minute job turned out to be ridiculous. Peter
fixes my issues too My OEM replacement arrived yesterday and am happy to say it also has fixed my overheating issues. The funny thing is that i was convinced the old clutch fan was fine. It felt just as stiff as the replacement. I tested it (the old try to stop from spinning test with a folded paper etc which i had difficulty doing), but after installing the new one there is now a pretty obvious 'whirring' coming from the engine bay now when driving slow in high revs. I can feel the air being pulled through the radiator from the front size. I can realy hear the fan working now which is very satisfying. Honestly if you can't hear your fan working in the same conditions then it may be time to replace yours. Took the z for the usual overheating test up the mountain and it barely reached 85degs with the AC on. This has always overheated the Z except in very cold conditions. Very satisfying to hear the fan working going back down too.. I can't believe i've been driving the z for so long with this issue. If anyone in the ACT thinks theirs is faulty and isn't sure i'll be happy to let you take a look to compare them.
Good news Alfie. Now she sounds like a 747 on take-off I bet . I wonder if the fans were quite as noisy when they rolled off the production line?
Got it from Coz for around 250 AUD delivered. I asked about postage and he told me it would be an extra 50 to deliver to Aus (you can't select +50 for postage on the site so i selected next day air but he still shipped it). He did say they can comine shipping. Perhaps it would be worth while putting an order in for each state? I should have asked if an ACT group buy could be done.
Come with just the viscious coupling fan clutch. No fan blade included. See here : http://www.conceptzperformance.com/C...121.208.115.33
Noticed the same thing regarding noise, after installing the new clutch fan it's definately noisy. Takes some getting used to. Peter
Got to test the new fan clutch today. With aircon on and an ambient temp of 32 the coolant temp never went past 83-84 on the highway(used to be 95-98 and then I'd turn the aircon off previously ). Stopped in traffic it would go up to 87. Gave the Z a hard run for a while and it went up to 90 and just wouldn't go any higher, still with the aircon on! The aircon seems to have a greater effect on oil temps which went up to 92 after the hard run - the highest it's ever been; even higher than it gets to on a hard, long, fast cruise. I compared the old fan clutch with the new one and there was no discernable difference using the ruler test and spinning them by hand... but there obviously is a huge difference when it comes to cooling system performance.
Is your new hub noisier than your old one? That seems to be a common complaint, If it isnt then i'll probably order one
Don't quote me on thiss'un BUT From what I've heard/experienced it is often the aftermarket fan clutches that are a whole lot louder than OEM ones. I had a Davies Craig clutch in mine, for a very long time. It truly made my car sound like a truck, which was not very enjoyable at all. I swapped it out for an OEM item (albeit, not a brand new one, but it was 10 years newer than the one my car came with so.. still an upgrade). Ever since my car has been running with barely any fan noise and all that jazz
The hub itself isn't noisy, just the wind noise made by the fan working properly. Yes it is louder. How much louder depends on how well your old hub was working. If I hold the auto in first gear and doi about 3-4k rpm I can hear it fairly clear but when driving you can't hear it above the engine and exhaust.
.... the weird thing in all this is that while positive heat reductions have been achieved and noted above, it seems that the changeover done by k-zed ( as reported in his "for sale" thread ) has not produced any heat reduction at all ... ... any thoughts .... ?????
Check it out cheap fan clutch Compatible fan clutch $187.00 http://www.eziautoparts.com.au/dayco-fan-clutch-115650.html
pretty sure mines a dayco and Its loud as f%$k. I really want to change mine and see if it quietens it down. Not too sure, when Mine was changed, my overheating problem went away, but The thermostat was also changed, and It was siezed shut, so cant be sure if the hub actually did anything.
My new OEM clutch fan had an immediate positive effect and was pretty loud too. I think it has quietened down a bit (just a bit) now that I've done about 1000kms since fitting it. (I doubt if they were this loud as the zed rolled out of the factory). My theory for this is that although the viscous coupling clutch is new, it has probably sitting on a shelf for 10 years or more since manufacture. Maybe the silicon gel has stiffened up and needs to thin out with use, or the internal restrictor mechanism needs to loosen up and allow the clutch to spin a bit more freely - causing the fan not to draw so much air through. Just a theory and sorry for the very non-mechanical explanation. Perhaps Chrispy or other tech heads can comment. Baz, I am surprised k-zed didn't see a drop in temps too.
Viscous fans are very loud. When the EA/EB Falcon's were new, you could hear them coming a mile away, sounded like a cyclone was about to hit. This is one of the primary reasons OEM's have switched to electric fans. It is loud because the fan is actually moving air, ie- working.
