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Rear Diff - Find out what you have installed

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Old 02 January 2009, 04:52 PM
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Pablo1981uk
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Default Rear Diff - Find out what you have installed

Afternoon

Just looking for alittle bit of adive, I have just replaced my gearbox on a Type R, the last gearbox was leaking alot of oil. I have replaced the gearbox xmas eve and everything seemed to be ok, I checked under the car last night and see oil everywhere again

Im thinking the rear diff might not be a 4.444 ratio, then causing problems with the gearbox? Can this happen Im not so sure Can anyone tell me where to find the part number on the rear diffs? Or how you know if its a 4.444 diff.

Thanks for your time guys

Pablo
Old 03 January 2009, 10:32 PM
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FB Tuning
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You need to remove the rear diff, and take off the backplate - CWP ratio is stamped on the side of the crownwheel.

Last edited by FB Tuning; 03 January 2009 at 10:34 PM.
Old 04 January 2009, 10:35 AM
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Pablo1981uk
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Originally Posted by fiestaboy
You need to remove the rear diff, and take off the backplate - CWP ratio is stamped on the side of the crownwheel.
Thank you

Will see if I can get it on the ramp and have alook today
Old 04 January 2009, 11:20 AM
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euan_r
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so the oil is leaking from gearbox? is it the back of gearbox?

if you didnt clean propshaft before putting back into box you could have knackered the seal with a bit of dirt. i did this a year ago now. you simply have to take off prop and replace rear seal insitu. was under a tenner i think.
Old 05 January 2009, 04:06 PM
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Pablo1981uk
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Originally Posted by euan_r
so the oil is leaking from gearbox? is it the back of gearbox?

if you didnt clean propshaft before putting back into box you could have knackered the seal with a bit of dirt. i did this a year ago now. you simply have to take off prop and replace rear seal insitu. was under a tenner i think.
I havent had the chance to have this looked at yet, I have someone popping round tonight to have a better look for me, theres oil over the drivers driveshaft if its leaking from the rear of the box would it make it that far forward??

Does anyone know if the STi v 3/4 (which is whats the gearbox is from) have slighty different lenghs in driveshafts???
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