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2.8 and 3.1 Flywheels

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yakatar
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Joined: 13 Nov 2007
Posts: 45
Location: Pontypool, South Wales

PostPosted: Wed Sep 10, 2008 13:03    Post subject: 2.8 and 3.1 Flywheels Reply with quote

As it looks like the box on my 2.8 Frontera is gonna have to come out, gonna get rid of the dual mass flywheel and fit a Trooper one.  

I know the 2.8 Trooper flywheel will fit but have seen a few posts that suggest the Trooper 3.1 and 2.8 flywheels are interchangeable, anyone know for sure Question
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dxmedia
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PostPosted: Wed Sep 10, 2008 13:04    Post subject: Reply with quote

Matski's the guy for this one I think...
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:::Matski:::
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Joined: 27 Dec 2005
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PostPosted: Wed Sep 10, 2008 14:43    Post subject: Reply with quote

Provided it's not the duel mass one they are identical.
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yakatar
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PostPosted: Thu Sep 11, 2008 0:13    Post subject: Reply with quote

:::Matski::: wrote:
Provided it's not the duel mass one they are identical.


Coolio, thanks for the info
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rangielover
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Joined: 17 Jul 2006
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PostPosted: Thu Sep 11, 2008 8:38    Post subject: Reply with quote

No they are not identical

I have a 2.8 and 3.1 solid flywheel in my garage

diameter and fitting are the same 8 bolt holes etc

the only difference is where the clutch plate fits

the 3.1 is machined out more to take a 250mm plate

the 2.8 is only machined to take a 240mm plate

the frontera 2.8 flywheel is identical to the dual mass fitted to the 3.0 DOHC TDI trooper.

If you are converting a dual mass flywheel off a frontera to solid flywheel it is easy

Fit either a 2.8 / 3.1 solid fly

Throw away the alloy gearbox spacer

shorten  the rear frontera solid prop by 2 inches

use a trooper 2.8 front axle or a frontera 2.3/2.4 front axle.

dont forget the gearbox wont fit unless you remove the two locating pins on the top of the engine they are locaters for the adapter plate.
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:::Matski:::
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PostPosted: Thu Sep 11, 2008 9:46    Post subject: Reply with quote

Ok I have a 2.8 clutch on a 3.1 lump but a 2.8 fly.

All the fixings are the same and they look identical but you say the 3.1 fly has a 10mm bigger surface? Are you sure? the 2.8 fly may have been big enough to take the bigger 3.1 clutch...Only 5mm a side so to speak.
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rangielover
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PostPosted: Thu Sep 11, 2008 10:37    Post subject: Reply with quote

they are definitely machined out larger, the depth of the plate and everything else is the same
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:::Matski:::
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PostPosted: Thu Sep 11, 2008 11:02    Post subject: Reply with quote

Ok, never knew that.
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rangielover
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PostPosted: Thu Sep 11, 2008 11:16    Post subject: Reply with quote

if i take a photo tonight, can someone upload it to this thread?
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:::Matski:::
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PostPosted: Thu Sep 11, 2008 12:33    Post subject: Reply with quote

Yes send it me at      matt @ esphotoghraphy.co.uk     without the spaces.

BTW I believe you Laughing
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K.Goodwin
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PostPosted: Thu Sep 11, 2008 18:31    Post subject: Reply with quote

i don't, get me a picture!


 Laughing
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jonkem
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Joined: 11 Jun 2005
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Location: Bedfordshire, UK

PostPosted: Thu Sep 11, 2008 22:08    Post subject: Reply with quote

rangielover wrote:
No they are not identical

I have a 2.8 and 3.1 solid flywheel in my garage

diameter and fitting are the same 8 bolt holes etc

the only difference is where the clutch plate fits

the 3.1 is machined out more to take a 250mm plate

the 2.8 is only machined to take a 240mm plate

the frontera 2.8 flywheel is identical to the dual mass fitted to the 3.0 DOHC TDI trooper.

If you are converting a dual mass flywheel off a frontera to solid flywheel it is easy

Fit either a 2.8 / 3.1 solid fly

Throw away the alloy gearbox spacer

shorten †the rear frontera solid prop by 2 inches

use a trooper 2.8 front axle or a frontera 2.3/2.4 front axle.

dont forget the gearbox wont fit unless you remove the two locating pins on the top of the engine they are locaters for the adapter plate.


????????

The car should already have a 3.1 gearbox because it is a 2.8 Frontera not a Trooper. The 3.1 flywheel should match perfectly with the engine and gearbox in the car, alternatively just fit a 2.8 flywheel with a 2.8 clutch.

Why talk about changing axles?

If the gearbox is knackered simply change it for a 3.1 gearbox there is no need to do anything to the axles.

Having done quite a few Frontera and Trooper transplants, I think you may be confusing leaf & coil sprung Fronteras which use different axle pinion protrusions, different gearboxes and different propshaft lengths. There are also differences between long and short wheelbases and not just propshaft lengths!
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dxmedia
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PostPosted: Thu Sep 11, 2008 22:12    Post subject: Reply with quote

I'm getting confused on this post.

Do the 3.1 2.8 and 2.8 frontera have the same box?
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jonkem
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Joined: 11 Jun 2005
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Location: Bedfordshire, UK

PostPosted: Thu Sep 11, 2008 22:20    Post subject: Reply with quote

3.1 Trooper and 2.8 Frontera NOT 2.8 Trooper.

You Chris, out of anyone, being a Muman, should know that a 2.8 Frontera is virtually a 3.1 Trooper Wink
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1994 KZJ70 Cruiser (currently filling the garage and causing some head scratching)
1988 MKI 3.1td Hybrid Van (Ex Bobtail)
1991 SWB Fronty 2.8td Hybrid
2000 Astra Estate (work)
2006 VXR Astra
MK1 SR Nova
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dxmedia
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Location: Hope Valley

PostPosted: Thu Sep 11, 2008 22:22    Post subject: Reply with quote

jonkem wrote:
3.1 Trooper and 2.8 Frontera NOT 2.8 Trooper.

You Chris, out of anyone, being a Muman, should know that a 2.8 Frontera is virtually a 3.1 Trooper Wink



So what's the difference between the 2.8 trooper and 3.1 trooper box?

Hasn't Matt got a 3.1 on a 2.8 box?
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