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Author Topic: Omega 2.0 to 3.0 Turbo  (Read 24650 times)

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albitz

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Re: Omega 2.0 to 3.0 Turbo
« Reply #15 on: 07 February 2013, 21:25:01 »

If you get excessive crank case pressure (very common on V6) you will blow the crank seal rather than the camcover seals. ;)
Vectra has different breather system so can use the (ugly) metal covers.
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Taavi

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Re: Omega 2.0 to 3.0 Turbo
« Reply #16 on: 07 February 2013, 21:31:07 »

Hmm, I will dig into it :)
I can add extra breater hoses from the covers to overcome this problem.
Need to install the catch can soon...
Thanks for sharing :)

btw, yes, vectra covers are ugly ;D
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Taavi

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Re: Omega 2.0 to 3.0 Turbo
« Reply #17 on: 07 February 2013, 21:48:10 »



do you have any photo of bmw gearbox mount to omega engine??

btw one of memebers here running omega with saab engine with lot more power then your car atm and dont have any issu wit box :y maybe your was wear out
[/quote]

I am still waiting for the flywheel to be matched with the bmw disk and audi aan pressure plate, then I will begin to modify the gearbox.
Most of the gearboxes were broken when the engine was c20let. The turbocharger was the same but boost was 1,3bar compared to the v6 0,4.bar .It made much more power then. The v6 has only broken 1 gearbox.
Also, I have a Sachs Race engineering 4-paddle ceramic cluch, which helps to destroy the boxes, beacause it is quite an on-off type and stresses the drivetrain when shifting hard.
I think last summer took 6-7 gearboxes :( Lost track on counting...
I have been looking for a saab b308 for a while, but none avalible, cheap :)

The v6 is work in progress, I installed the turbo in less than month and using primerly the parts that I had lying in the garage. Need to get the CR down and larger injectors, then there is some hope for power. :)
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Andy89

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Re: Omega 2.0 to 3.0 Turbo
« Reply #18 on: 07 February 2013, 22:03:12 »

btw one of memebers here running omega with saab engine with lot more power then your car atm and dont have any issu wit box :y maybe your was wear out

How does this person drive?
An omega gearbox does not withstand a lot of power if it is being used hard.


What type of gearboxes do you use Taavi?
R25, R28 or R30? (R25 is from 2.0l-2.5l, R28 3.0l and R30 3.2l)
250, 280 and 300nm

Taavi

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Re: Omega 2.0 to 3.0 Turbo
« Reply #19 on: 07 February 2013, 22:20:50 »

I use R25 because their easyer to find.
I also have destroyed one r28.
Always the 3rd gear brakes down, and I have visually compared r25 to r28 and the 3rd gear gears ar the same. Some other are bit beefier in r28 but dont rememer which.
R30 is no-no here, impossible to find.

In the past, there was an omega A with 4.0 irmscher engine, which destroyed lots and lots boxes even with the standard 200kw so yes, omega manual boxes s*ck.
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cem_devecioglu

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Re: Omega 2.0 to 3.0 Turbo
« Reply #20 on: 07 February 2013, 22:50:35 »

I use R25 because their easyer to find.
I also have destroyed one r28.
Always the 3rd gear brakes down, and I have visually compared r25 to r28 and the 3rd gear gears ar the same. Some other are bit beefier in r28 but dont rememer which.
R30 is no-no here, impossible to find.

In the past, there was an omega A with 4.0 irmscher engine, which destroyed lots and lots boxes even with the standard 200kw so yes, omega manual boxes s*ck.

try old autoboxes and see how long they can survive ;D
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cem_devecioglu

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Re: Omega 2.0 to 3.0 Turbo
« Reply #21 on: 09 February 2013, 16:42:56 »

checking the net getrag 240 can handle around 300 hp and 300 ft lbs of torque .. but that info not official.. besides some other drivers also destroyed 3rd gear.. :-\
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cem_devecioglu

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Re: Omega 2.0 to 3.0 Turbo
« Reply #22 on: 09 February 2013, 20:03:16 »

and from forums,  if I understand correctly getrag 240 is swappable with getrag 260 and zf320 without problems.. although ratios are a bit different.. but 260 and zf is stronger..
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Andy89

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Re: Omega 2.0 to 3.0 Turbo
« Reply #23 on: 09 February 2013, 22:09:38 »

I was recommended getrag 265 or maybe a ZF box by a tuning company here, when I said I was after 350whp
But you have to rebuild the clutch housing to fit and a new propshaft

cem_devecioglu

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Re: Omega 2.0 to 3.0 Turbo
« Reply #24 on: 09 February 2013, 22:26:10 »

I was recommended getrag 265 or maybe a ZF box by a tuning company here, when I said I was after 350whp
But you have to rebuild the clutch housing to fit and a new propshaft

bimmers swapping getrag 240 to zf320 says its a direct swap.. probably on the omega shaft may require some work..  dont know about clutch housing :-\
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2woody

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Re: Omega 2.0 to 3.0 Turbo
« Reply #25 on: 10 February 2013, 00:09:44 »

no, gearbox swap is not easy.

BMW getrag 240 uses a separate bellhousing and so can be changed for a 265 easily ( also with separate bellhousing ) There is no separate bellhousing for the Opel 54 degree V6.

I have an Omega 3.0 track car with a standard R25 - and an Omega A 4-litre track car. No gearbox problems in over 10,000 track miles. The Getrag 240s are built of rock.
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cem_devecioglu

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Re: Omega 2.0 to 3.0 Turbo
« Reply #26 on: 10 February 2013, 10:40:43 »

no, gearbox swap is not easy.

BMW getrag 240 uses a separate bellhousing and so can be changed for a 265 easily ( also with separate bellhousing ) There is no separate bellhousing for the Opel 54 degree V6.

I have an Omega 3.0 track car with a standard R25 - and an Omega A 4-litre track car. No gearbox problems in over 10,000 track miles. The Getrag 240s are built of rock.

very good news :)  no extra costs then :y
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Taavi

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Re: Omega 2.0 to 3.0 Turbo
« Reply #27 on: 10 February 2013, 14:39:34 »

The new box will be GS6-37DZ
Its rated to 370Nm, but lets see how it holds up. The GS6-56 would have been perefect since it has 560Nm rating but its not cheap.
I have also considered getrag 265 but it aint so easy to find here.
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Taavi

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Re: Omega 2.0 to 3.0 Turbo
« Reply #28 on: 11 February 2013, 20:56:34 »

Modified flywheel, bmw clutch disk, audi S6 pressure plate:



Bmw bellhousing being cut off, waiting for machining, some custom fixtures and welding.
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cem_devecioglu

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Re: Omega 2.0 to 3.0 Turbo
« Reply #29 on: 11 February 2013, 21:17:01 »

serious work.. looks like this time you wont leave it for luck :y :y
 
please keep us informed :y
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