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| 4th engine pull https://www.ausmini.com/forums/viewtopic.php?f=2&t=4890 |
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| Author: | Stuartminidlx [ Fri Feb 18, 2005 6:39 pm ] |
| Post subject: | 4th engine pull |
gunna pull my engine out again!!!!! I think i have broken sum teeth off the crown wheel and pinion. If so this would be the seond time this has happened. does anyone have any ideas why this keeps happenin. i'm gunna take sum pics off it this time. stu. |
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| Author: | 9YaTaH [ Fri Feb 18, 2005 6:58 pm ] |
| Post subject: | Re: 4th engine pull |
Stuartminidlx wrote: gunna pull my engine out again!!!!! I think i have broken sum teeth off the crown wheel and pinion. If so this would be the seond time this has happened. does anyone have any ideas why this keeps happenin. i'm gunna take sum pics off it this time.
stu. Hmmmm, are you replacing the two humongous bearings as well?? Have you been using mis-matched Crown Wheel and Pinion (shouldn''t make that much difference). Maybe your diff housing could do with a line bore??? Hell, thats a hard one.....Doc?? |
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| Author: | aaron [ Fri Feb 18, 2005 6:58 pm ] |
| Post subject: | |
Your syncros are probably stuffed along with your selectors. when you jam your gears in too quick the diff locks because your in two gears at once for a breif moment and shears off teeth. Sounds plausible to me, but others may have a differing opinion. Cheers Aaron |
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| Author: | Stuartminidlx [ Fri Feb 18, 2005 7:19 pm ] |
| Post subject: | |
i use a maching crownwheel and pinion when i replaced it the first time. |
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| Author: | Harley [ Fri Feb 18, 2005 7:37 pm ] |
| Post subject: | |
Are you revving the crap out of it? |
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| Author: | Stuartminidlx [ Fri Feb 18, 2005 7:57 pm ] |
| Post subject: | |
i redline line it at 5500rpm and yes the second gear syncro doesn't work. but i double clutch and don't crunch at all. from 3rd to 2nd |
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| Author: | drmini in aust [ Fri Feb 18, 2005 8:45 pm ] |
| Post subject: | |
Only time I've seen pinion damage (Mini Mad's car) it looked like the damage started from somebody using a cold chisel on the lockwasher, long long time ago. Pinion lost a tooth then sometime later, another. Bad toothache.. we needed another pinion. Crown wheel was still OK, surprisingly- they are pretty tuff. 
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| Author: | justminis [ Fri Feb 18, 2005 9:32 pm ] |
| Post subject: | |
I've never ripped teeth of a crown wheel or pinion in over 20 years of abusing mini gearboxes and this includes racing, savage starts with more than 120hp! Because it has happened to you twice it must be something you are doing either driving wise or workmanship with your gearboxes. Under what conditions does it happen? You could of course be the receipant of bad luck with defect parts, but the odds are pretty low I'm afraid. Tell us more. Steve |
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| Author: | Mini Mad [ Fri Feb 18, 2005 9:34 pm ] |
| Post subject: | |
Hehe that twas me  I still have the gear sitting at my desk on display
I don't think reving that crap out of the little bugger would be a problem, before mine decided to eat some teeth for a quiet weekend breaky, It hadn't seen over 5.5k and rarely went past 4.5k... The docs car does see 8k'rpm so i don't see the prob as gearboxes are no stronger? I too double clutch every change...overkill probably, probably eat's pinion wheels too  haha..
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| Author: | Morris 1100 [ Fri Feb 18, 2005 9:39 pm ] |
| Post subject: | |
I have damaged a pinion, a piece of metal got jammed between the pinion and the crownwheel. The piece of metal was the bracket off the centre oil pick-up. It came loose because the crank hit it. The crank hit it because...... |
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| Author: | 9YaTaH [ Fri Feb 18, 2005 9:42 pm ] |
| Post subject: | an Opinion |
drmini in aust wrote: Only time I've seen pinion damage (Mini Mad's car) it looked like the damage started from somebody using a cold chisel on the lockwasher, long long time ago. Pinion lost a tooth then sometime later, another. Bad toothache.. we needed another pinion. Crown wheel was still OK, surprisingly- they are pretty tuff.
In Canberra, we have had a well driven, but spiritedly pinion neatly explode into five almost equal sections....it can happen (must be the alititude  )
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| Author: | Mini Mad [ Fri Feb 18, 2005 9:44 pm ] |
| Post subject: | |
Now that would be cool...someone still got it? |
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| Author: | 9YaTaH [ Fri Feb 18, 2005 9:55 pm ] |
| Post subject: | Yeah?? |
Mini Mad wrote: Now that would be cool...someone still got it?
Yep!....you don't chuck things like that!! so you think it should maybe go on Ebay?? 
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| Author: | Mini Mad [ Fri Feb 18, 2005 10:04 pm ] |
| Post subject: | |
Haha, Post some pics
I lost 4 teeth on mine when i found out, you can see that it was missing one and a half teeth for a while 
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| Author: | Stuartminidlx [ Sat Feb 19, 2005 2:50 pm ] |
| Post subject: | |
the first time it happened i think it was the oil througher it exploded and i think sum peices may have got jammed it the crownwheel and pinion and blasted a few teeth off. i found half a split pin stuck to the sump plug and 2 gear teeth i believe to be from the crownwheel and pinion. reason being is noise is present in all gear when slowing down. and the sound is the same as last time. thanks for the help. i beleive that i have also broken my ankle skateboarding so the engine pull is on hold but the more feedback the better. the crownwheel and pinion was replace buy a good friend of mine who is a great mechanic. i think it just been bad luck. stu |
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