displaying posts 1 to 8 of 8

Author Subject: final drive housings
darrellspeed

Senior User

Location: Exeter

Registered: 01 Jul 2008

Posts: 814

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Post #1
Are the final drive housings interchangeable?

as i have one with a crack in it!

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Posted 22nd Aug 2009 at 05:21
allanallen

Seasoned Pro

Location: Buxton

Registered: 01 May 2007

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Post #2
I think all be3 ones will be the same.

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Posted 22nd Aug 2009 at 05:45
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #3
Yes, they are interchangeable. Yes

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Posted 25th Aug 2009 at 17:19
darrellspeed

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Location: Exeter

Registered: 01 Jul 2008

Posts: 814

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Post #4
ideal, did notice the gti6 has 2 locating lugs instead of 1 like the previous gearboxes though. never miond decent gasket sealer and all up tight, Thanks

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205 XU10J4RS by PUG1OFF 236.4 BHP at Northampton Motorsport.

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Posted 25th Aug 2009 at 17:21
rich_w

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Location: Havant, Hampshire

Registered: 29 Jul 2004

Posts: 5,412

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Post #5
I would be careful swapping these.

They are line-bored and counter-bored to house the diff bearings as one assembly, like a head is line-bored for the cams, or a block is line bored for the crank.

Using separate halves from 2 different boxes could result in premature diff bearing failure, or improper meshing of the teeth on the crown wheel/pinion.

Smile

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Posted 25th Aug 2009 at 20:35
darrellspeed

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Location: Exeter

Registered: 01 Jul 2008

Posts: 814

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Post #6
ok, i did think that, but with the interchangeable bearings which as you'll agree are much more substantial tham main or big end bearings, im hoping that providing the bearings are tight and shimmed up correctly and that it sits tight and flush with no leaks it'll be ok. i guess if its out of line the first thing to fail will be the diff seals as they will be the softest part and most easily pushed out of shape.

But i'll keep a very close eye on whats going on with it,

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205 XU10J4RS by PUG1OFF 236.4 BHP at Northampton Motorsport.

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Posted 25th Aug 2009 at 20:42
rich_w

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Location: Havant, Hampshire

Registered: 29 Jul 2004

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Post #7
Yeah, the bearings float in the steel outer races, which are a lot stronger than shells etc.

It should be fine, most people don't bother shimming the bearings or putting some engineer's blue on the teeth to check the CWP mesh correctly, but do this and i'm sure everything will be in order.

Smile

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rich@lynxpowerengineering.co.uk
07732 822546

Posted 25th Aug 2009 at 20:59
miles

Seasoned Pro

Location: Ringwood

Registered: 28 Dec 2002

Posts: 3,433

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Post #8
There is around 6 different design's of Diff cover, All with little differance's.
Most can be swaped over thou

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Posted 26th Aug 2009 at 01:26

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