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Fan touching Harmonic Balancer
https://www.ausmini.com/forums/viewtopic.php?f=2&t=14836		 Page 1 of 2
Author:  9YaTaH [ Wed Jan 11, 2006 11:29 am ]
Post subject:  Fan touching Harmonic Balancer
What is going on here :?: the fan is so close to the Harmonic Balancer it touches when the motor is revved. Can't have the spacer behind the fan :?:

Image
Author:  Harley [ Wed Jan 11, 2006 12:16 pm ]
Post subject: 
Fans not on backwards is it?
Author:  IanD [ Wed Jan 11, 2006 12:30 pm ]
Post subject: 
Don't worry, the bits that touch the balancer will eventually get chewed off and then you'll have clearance :) Or you could use a sharp knife and make a neater job. Comes from using an old fan with bent and bendy blades...

Good luck..
Author:  9YaTaH [ Wed Jan 11, 2006 12:33 pm ]
Post subject:  White Fans
IanD wrote:
Don't worry, the bits that touch the balancer will eventually get chewed off and then you'll have clearance :) Or you could use a sharp knife and make a neater job. Comes from using an old fan with bent and bendy blades...

Good luck..


Its the dreaded exploding white thing-a-me as well :oops:
Author:  IanD [ Wed Jan 11, 2006 12:55 pm ]
Post subject: 
No..that only happens when you leave a rag under the bonnet to soak up the water from the split in the radiator...Ask me how I know that a Mini will overheat when driven without fan blades...then again, don't.

Cheers
Author:  Harley [ Wed Jan 11, 2006 12:57 pm ]
Post subject: 
There is an upside to no fan, More Power! :D
Author:  Zizzle [ Wed Jan 11, 2006 1:37 pm ]
Post subject: 
Oh yeah, I remember my beast making a horrid noise once when I had last the rad cap and used a rag as a wick. Eventually it got eaten by the fan. No damage, but christ what a noise.

I also seem to remeber seeing a few difference spacer sizes?
Author:  minicranks [ Wed Jan 11, 2006 2:43 pm ]
Post subject: 
measure between the radiator and the fan blades to see how much space you have and put some thick washers behind each nut to move the fan away or it will catch and you will end up with no blaeds left. ask MRBOB waht it does when it goes.
Author:  9YaTaH [ Wed Jan 11, 2006 3:12 pm ]
Post subject:  Nuts
minicranks wrote:
measure between the radiator and the fan blades to see how much space you have and put some thick washers behind each nut to move the fan away or it will catch and you will end up with no blaeds left. ask MRBOB waht it does when it goes.


Yep....there is a bunch of room in front of the fan....the four bolts should have a spacer between them and the boss, thats what is being checked now....some discussion about different spacer widths above..also, but 5-10mm is all that would needed.

The fan has been in place for about 3 years and has "only just started making the noise".
Author:  Morris 1100 [ Wed Jan 11, 2006 5:19 pm ]
Post subject: 
Check the end float on the crank. (just in case 8) )
Author:  CPOCSM [ Wed Jan 11, 2006 5:44 pm ]
Post subject:  Re: Nuts
9YaTaH wrote:
minicranks wrote:
measure between the radiator and the fan blades to see how much space you have and put some thick washers behind each nut to move the fan away or it will catch and you will end up with no blaeds left. ask MRBOB waht it does when it goes.


Yep....there is a bunch of room in front of the fan....the four bolts should have a spacer between them and the boss, thats what is being checked now....some discussion about different spacer widths above..also, but 5-10mm is all that would needed.

The fan has been in place for about 3 years and has "only just started making the noise".


Mick - I have some sparebie spacers here if you need them. I think at the end of the day just get the fan away from the balancer.

Give us a bell if you want - I am still on leave and can drop it around if you want...

Hooroo

Rob Forsyth
Miniot!!
Author:  9YaTaH [ Wed Jan 11, 2006 5:58 pm ]
Post subject:  Re: Nuts
CPOCSM wrote:
9YaTaH wrote:
minicranks wrote:
measure between the radiator and the fan blades to see how much space you have and put some thick washers behind each nut to move the fan away or it will catch and you will end up with no blaeds left. ask MRBOB waht it does when it goes.


Yep....there is a bunch of room in front of the fan....the four bolts should have a spacer between them and the boss, thats what is being checked now....some discussion about different spacer widths above..also, but 5-10mm is all that would needed.

The fan has been in place for about 3 years and has "only just started making the noise".


Mick - I have some sparebie spacers here if you need them. I think at the end of the day just get the fan away from the balancer.

Give us a bell if you want - I am still on leave and can drop it around if you want...

Hooroo

Rob Forsyth
Miniot!!


Thanks Rob...but me only advising on this one (and scratching my head and nodding wisely when needed :oops: ).

The problem is well understood by the fella.... :D
Author:  minicranks [ Wed Jan 11, 2006 6:57 pm ]
Post subject: 
the fan has got old anf the baldes have distorted so when you rev it up the blades flatten out and touch.
Yep put the small spacer on the pump and you will be A ok again for another few years.
remember to use longer bolts but not too long or you will hit the water pump causing more damage.
Author:  drmini in aust [ Wed Jan 11, 2006 8:06 pm ]
Post subject: 
IF it happens to have a belt drive kit on the cam(?) these push the balancer forward by 3 mm or so. I had to put a 3mm alloy spacer between water pump hub and fan, and move alternator forward 3mm too. :wink:
No prob spacing the fan a bit, it's miles away from the radiator core.
Author:  9YaTaH [ Wed Jan 11, 2006 9:31 pm ]
Post subject:  Yeah Maybe!
You could have something there Doc....pretty sure it does have a toothed timing belt kit....me check tomorrow....Cheers 8)

(if you look at the fanbelt you can see the offset!)
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