Yeah I have the same problem.....
Hopefully fixed soon too.
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| Crankshaft Whinning https://ausmini.com/forums/viewtopic.php?f=5&t=36332 |
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| Author: | MiniMe87 [ Wed Oct 03, 2007 10:47 am ] |
| Post subject: | Crankshaft Whinning |
hey all, at idle i get this quiet whine out of my crankshaft, originially i thought it was the alternator but i took that off and the whinning continued, as i accelerate the whinning gets much louder, at idle its intermitant, but u can still hear it but at high RPM it is louder then the exhaust, and thats quite a feat. has anyone else had this problem?? is it just the bearings on the pulley making this sound? or is it worse?? after a quick look taking off the pulley shouldnt be to hard just take out the radiator, but thats just my best guess any help would be great!! thanks Craig |
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| Author: | simon k [ Wed Oct 03, 2007 1:58 pm ] |
| Post subject: | |
sounds like water pump, but couldn't be since you've tried running the engine with the fan belt off when you removed the alternator, right? does the whine go away when you push your foot on the clutch? if so it's probably the thrust bearing... I've done 2 of them in the last week! they often get adjusted to the point where they're constantly touching the clutch plate and it wrecks them |
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| Author: | Minute [ Thu Oct 04, 2007 7:53 pm ] |
| Post subject: | |
could possibly be an idler gear whine.. i know they are sumtimes very noisey when theres too much slack in the thrusts either side |
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| Author: | MiniMe87 [ Fri Oct 05, 2007 9:06 am ] |
| Post subject: | |
thanks for the help! yer i took the belt off and the water pump wasnt turning yet i still had the whinning, ill try the clutch thing when i get home tonite |
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| Author: | TheMiniMan [ Tue Oct 09, 2007 11:58 am ] |
| Post subject: | |
If it`s the clutch throw out bearing then the noise will get worse when you put your foot on the clutch more likely it`s idler gear whine inside the primary case,,, drop gears or transfer gears. you don`t have an A+ engine in there do you??? some times if the timing chain is adjusted too tight, &/or a double row chain has been fitted to the A+ type gear assy without clearncing the tin cover enough then a slight whine can be produced. My bet is idler gear/primary gear tho |
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| Author: | czerial [ Tue Oct 09, 2007 12:59 pm ] |
| Post subject: | |
its more of a screeching than a whining isnt it craig from what i heared. |
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| Author: | MiniMe87 [ Wed Oct 10, 2007 7:52 am ] |
| Post subject: | |
it almost sounds like the alternator is to tite, but obviously its not the alternator. when i depress the clutch that sound goes away, i got my mechanic (aka my brother) having a look on sunday so fingers crossed ill no then! thanks again for all the help guys! |
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| Author: | slinkey inc [ Wed Oct 10, 2007 10:10 am ] |
| Post subject: | |
Yeah I have the same problem.....
Hopefully fixed soon too. |
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| Author: | TheMiniMan [ Wed Oct 10, 2007 4:26 pm ] |
| Post subject: | |
Yeah, it really sounds very internal to me, When you put your foot on the clutch, the whole gear train from drop gears down to the diff basically stop turning, so if the noise goes away when you put your foot on the clutch then it`s most likely inside there. Havin said all that tho, i have known a couple of Throw out bearings that have been set up wrong (poorly/over adjusted clutch) to be resting gently on the tin hat (clutch diaphram) just enough to wear it out & yet not wear it out enough to be too grumbly & grindy yet & when the clutch is depressed the preasure upon it takes up that little squeeling play noise,,,, But,,, i`d lean more towards the problem being internal with drop gears ,,, way more than the throw out bearing Just a guess over the net tho, i`m not there diagnosing it so don`t shoot me down if it is the throw out bearing, 
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| Author: | sports850 [ Wed Oct 10, 2007 4:36 pm ] |
| Post subject: | |
TheMiniMan wrote: Havin said all that tho, i have known a couple of Throw out bearings that have been set up wrong (poorly/over adjusted clutch) to be resting gently on the tin hat (clutch diaphram) just enough to wear it out & yet not wear it out enough to be too grumbly & grindy yet & when the clutch is depressed the preasure upon it takes up that little squeeling play noise,,,,
Several years ago I saw some (and used one) dodgy throw out bearings that seemed to magnetise with the diaphram and spin in sympathy with it without touching and squeal . Once pressure was on them they were quiet , frustrating bloody thing to find what was wrong . If you've got another clutch cover sitting about with a reasonable bearing on it swap it over and see if it changes the noise . It's fairly simple to swap and will tell you if it's internal or not rather than pulling it all apart . |
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| Author: | slinkey inc [ Thu Oct 11, 2007 9:44 pm ] |
| Post subject: | |
I helped get my engine out at Morris Mania today, and yerrrrp no good. Same symptoms as above, but more of a grinding noise that disappeared when the clutch was pressed down. When the oil was dumped a needle roller was stuck to the sump plug which gave a good indication of what it was and yes it was. An idler gear. The gear shifted and now only has half the teeth it's suppsoed to have, the gear below it got some crap in it's bearing and thats dodgy now too. And my gearbox casing is rooted becasue of this, although I think if you milled out the bearing 'hole' a bigger bearing could be used but I've been told jsut to find another. 
I find out more bad news tommorow of the rest of the motor. Fingers crossed.... PS, I'm not happy at all.... |
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| Author: | slinkey inc [ Fri Oct 12, 2007 1:42 pm ] |
| Post subject: | |
Minime, I think you may have the same issue as me. The motor's been dissassembled and most stuff seems OK. Crank bearing are fine, oil pump is 1/2 dead (getting a new one of course), cam bearing a little warn, rings and bores are still good and generally, the gearbox appears alright. But gearbox case is damaged. Rebuild should be quick and easy as theres not much damage to the engine itself. So now I'm happy. Just need another gearbox to rebuild.
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