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Fan Just touches Harmonic Balancer ?


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#1 _ChaosWeaver_

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Posted 09 March 2013 - 06:22 PM

Just curious if anyone knows why.....?  The fan on my XU-1 just hits the balancer, and when you push the clutch in it stops...?   any idea's



#2 N/A-PWR

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Posted 09 March 2013 - 06:41 PM

Hi ChaosWeaver,

Could be several things:-

1 - clutch pressure moves Motor/box assembly as the engine/box mounts are shot.

2 - fan blades are shot.

3 - crank shaft has play.

4 - harmonic balancer is shot.

 

p.s. get someone to look in there when the other operates the clutch. Dave I


Edited by TORYPOWER, 09 March 2013 - 06:43 PM.


#3 _ChaosWeaver_

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Posted 09 March 2013 - 06:49 PM

I don't like the sound of any of them....... It has always done it, and it only had around 3000 miles on the motor when i got it..... and the motor has now done about 25,000 miles,  and last time it was going, it was absoluley fine... just making a "Ting - Ting - Ting noise .........lol



#4 wot179

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Posted 09 March 2013 - 06:56 PM

I very much doubt it is the fan if it stops when you push the clutch in.



#5 _Bomber Watson_

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Posted 09 March 2013 - 07:33 PM

Xu-1's ran a notched fan to clear the retaining plate on the balancer.

 

And it sounds like you have a frOckload of crankshaft end float.

 

Cheers.



#6 _bathurst-racer_

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Posted 09 March 2013 - 07:34 PM

I don't think a genuine XU-1 fan would come anywhere near the pulley due to its smaller than standard diameter. Of course I may very well be wrong.



#7 rodomo

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Posted 09 March 2013 - 07:37 PM

Waterpump is stuffed?



#8 N/A-PWR

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Posted 09 March 2013 - 07:42 PM

Could it be the Clutch throw-out bearing



#9 S pack

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Posted 09 March 2013 - 08:19 PM

If there was too much crankshaft end float the problem would be worse when the clutch pedal is depressed.

I'd be looking at the water pump as Rodomo has suggested. Remove the fan belt, grab the fan and check if there is excessive wobble in the pump shaft.

 

Also check the outer pulley on the balancer isn't coming off or that the balancer has been installed fully onto the crank. You should have a good 8 to10mm clearance between  the fan blades and the face of the balancer.

 

DJ, it was only the 150 list 1973 XU1's that got the balancer retainer and the notched fan blades as factory fitment.



#10 _Bomber Watson_

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Posted 09 March 2013 - 09:03 PM

Really? There ya go.

 

Considering i've seen a few of the notched fan blades and one of the balancers with the ring i figured it was a bit more garden variety than that...Cheers for the correction.



#11 _ChaosWeaver_

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Posted 09 March 2013 - 09:13 PM

Thanx heaps guy's, the motor is out of the car at the moment, and im gunna get it checked over before it goes back in...  as I said everything about the motor seems fine, I had it dyno'd once and the guy said it was nothing wrong with the motor, just that the fan was very close............ If I find the reason i'll let you now..  cheers....



#12 S pack

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Posted 09 March 2013 - 09:22 PM

Put up some pics of the fan etc from different angles might help to work out what could be wrong. 



#13 _ChaosWeaver_

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Posted 09 March 2013 - 10:08 PM

Attached File  001 (480x640).jpg   51.47K   2 downloadsAttached File  002 (480x640).jpg   46.41K   2 downloadsAttached File  003 (640x480).jpg   32.31K   1 downloadsAttached File  004 (480x640).jpg   43.45K   0 downloadsAttached File  005 (640x480).jpg   30.65K   1 downloads     The fan is off the motor at the moment, I can show fan, i'll put it on motor and take some pics tomorrow..



#14 N/A-PWR

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Posted 09 March 2013 - 10:10 PM

No wear marks on her



#15 rodomo

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Posted 09 March 2013 - 10:22 PM

L@@KS like a standard fan to me?

#16 _ChaosWeaver_

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Posted 09 March 2013 - 10:23 PM

no marks, it was just the faintest touch. and from memory it seemed to have a bit of a rhythm to it like it wasn't hiting every point,,  I'll put it on the motor tomorrow and take some pics.....



#17 S pack

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Posted 09 March 2013 - 11:15 PM

L@@KS like a standard fan to me?

Yep, standard LJ XU1 fan blade assy.



#18 N/A-PWR

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Posted 09 March 2013 - 11:17 PM

same fan as the X2 Hr



#19 S pack

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Posted 09 March 2013 - 11:35 PM

same fan as the X2 Hr

Are you sure Dave? Last time I saw an X2 engine fan the blades were sort of square ended not rounded like the XU1.

From memory the LC GTR engine fan looks a lot like the X2 fan.



#20 N/A-PWR

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Posted 09 March 2013 - 11:43 PM

gees - I have missed the Fine Details of GMH Standard Fans here, but one blade came off of the X2 HR while I was driving and it when through the bonnet vertically and I could not find it. Dave I

 

p.s. I never stand over a Motor running now. 



#21 N/A-PWR

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Posted 10 March 2013 - 12:15 PM

140.jpg

 

Was for sale and is gone, but it was said to be a HR X2 one but mine was almost square at the tips. Dave I

 

p.s. change fans to see if there is any difference to the noises



#22 wot179

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Posted 10 March 2013 - 05:30 PM

I had a funny little ticking noise in the goon that had me foxxed and it ended up being the spring that locates the metal dustcover

 

on the clutch fork being dislocated and rubbing on the clutch.



#23 _ChaosWeaver_

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Posted 10 March 2013 - 07:30 PM

OK thanks guy's , it was that long ago, it could have been the other way around (Fan would just hit when I pushed the ciutch in) I can't really remember, but the motor will be looked at soon, as it's never run unleaded before...... I was looking at a few Torana's at MAD today, and the fans on a couple of them were realy close, but the guy's said they didn't touch...  so when I get the motor pulled down and checked I'll post what was found..... once again thanks for the help and advice ....



#24 orangeLJ

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Posted 11 March 2013 - 01:38 PM

Aftermarket balancer?






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