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Author Broken Gearbox Porn
AK
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Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
6th Mar 13 at 20:06   View User's Profile U2U Member Reply With Quote
Fee destroyed these two boxes in the space of a couple of months in 2012 (TA at KH and TOTB).

Both have suffered the exact same fate - stripped 3rd gear.

Some pics - for no other reason that I like stuff like this

remnants of box1, much more drained with oil



Remnants of box 2 - bigger bits



box 1 internals, 3rd gear damaged


box 2 - 3rd gear pretty much all gone


gearsets side by side




grave yard

Dan295
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Registered: 9th Oct 06
Location: London
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6th Mar 13 at 20:13   View User's Profile U2U Member Reply With Quote
Your using red line heavy shockproof?
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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6th Mar 13 at 20:18   View User's Profile U2U Member Reply With Quote
yup, mingin stuff
FAZ
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Registered: 24th Nov 07
Location: Coventry
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6th Mar 13 at 20:22   View Garage View User's Profile U2U Member Reply With Quote
fee is bad ass, has she heard of a clutch?
Kyle T
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Registered: 11th Sep 04
Location: Selby, North Yorkshire
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6th Mar 13 at 20:22   View Garage View User's Profile U2U Member Reply With Quote
Ooof. I'll be the one to sound stupid then, but what actually causes this?

I guess launches would knacker 1st/2nd, so is it aggressive downshifting or just struggling with the raw power running through the box?

Lotus Elise 111R

Impreza WRX STi
Mike
Organiser: North West and North Wales
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Registered: 20th May 06
Location: nr. Skipton, North Yorkshire
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6th Mar 13 at 20:23   View Garage View User's Profile U2U Member Reply With Quote
Did she decide she hadn't done a good enough job on the 1st box so went all out on the 2nd?
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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6th Mar 13 at 20:24   View Garage View User's Profile U2U Member Reply With Quote
Why third? Normally it's the top gear (or top 2 of they're both overdrive gears) which suffer with torque stripping them.

Is this a typical Skyline problem?
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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6th Mar 13 at 20:24   View User's Profile U2U Member Reply With Quote
that was with a clutch....

1st one was on slicks, full boost, power out of the hairpin at KH and up into 3rd.... BANG, no drive. I think its just the power and grip is too much for the OE box and rips the teeth off. Something to do with the centre plate flexing too.

2nd box was the first full boost drag run at TOTB. She did a low boost 60ft at 1.6 fine. Same story, 2nd to 3rd... BANG
sc0ott
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Registered: 16th Feb 09
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6th Mar 13 at 20:36   View User's Profile U2U Member Reply With Quote
Its like gearbox blood
Dan295
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Registered: 9th Oct 06
Location: London
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6th Mar 13 at 20:51   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by AK
yup, mingin stuff


You have u2u
_Allan_
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Registered: 24th Mar 04
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6th Mar 13 at 20:59   View User's Profile U2U Member Reply With Quote
dem teeth
3CorsaMeal
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Registered: 11th Apr 02
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6th Mar 13 at 21:11   View User's Profile U2U Member Reply With Quote
Get her an auto imo
FAZ
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Registered: 24th Nov 07
Location: Coventry
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6th Mar 13 at 21:31   View Garage View User's Profile U2U Member Reply With Quote
scoob
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Registered: 16th Oct 03
Location: Beverley, E Riding of Yorkshire
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6th Mar 13 at 21:35   View Garage View User's Profile U2U Member Reply With Quote
It's just like owning a 1.9cdti astra
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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7th Mar 13 at 08:16   View User's Profile U2U Member Reply With Quote
Robin, aye, its a weak known issue with the gearbox when used at around 700bhp

We have a little less but better 4wd system with uprated transfer box, so i think less slip in the drivtrain took its toll
tom130691
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Registered: 13th Sep 08
Location: Daventry
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7th Mar 13 at 08:23   View Garage View User's Profile U2U Member Reply With Quote
try source a straight cut box?
AK
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Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
7th Mar 13 at 09:53   View User's Profile U2U Member Reply With Quote


We are now running a 6sp sequential dog box, but with helical gears (not straight)

 
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