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[rockwool]

Hi all,


might aswell introduce my self quickly before I continue with my question. I drive a 1974 Ascona Voyage that this summer will be a 2.0DTI, hopefully with an automatic transmission and lower end gearing (probably from a Chevy S10).



So I got me this 1999 Omega 2.0DTI with a manual tranny and since 1999 is the first common-rail year I wonder if 1998 and older Omega (automatic) geraboxes will fit bolt on?

In particular I wonder if a 1991 Omega 2.0 GL has the same bellhouse bolt pattern, I also wonder if this automatic will be able to handle 250NM with no problem? 

Am I correct that 1991 had a GM 4L30 and that the 1999 run the 5sp successor?



Cheers

[TheBoy]

5 speed auto was only fitted to the non-UK Opel Omega 2.5DTi. All others had ar25/35.

2.2DTi never offered with auto.

[dbug]

Welcome to OOF mate 

[rockwool]

5 speed auto was only fitted to the non-UK Opel Omega 2.5DTi. All others had ar25/35.

2.2DTi never offered with auto.

Nice, so they share the same bellhouse bolt pattern! Also looked up the AR25 and it will handle 250NM - hence "25" - whereas the AR35 will handle 350NM.

Few more bits in the puzzle layed.   

Welcome to OOF mate 

Thanks!  =)

[rockwool]

New question:

The AR25 is an electronically controlled gearbox, right?
Or wasn't electrinics introduced until the 5L40?

[2woody]

AR25/35 is a 4L-30E

there are two bellhousing patterns for Omega B - this first is for all of the petrols and all of the 4-cylinder diesels. The second is for the 6-cylinder BMW diesel

the 5-speed auto was only fitted to the 6-cylinder diesel. No-one on here has ever seen one.

Any Omega B auto transmission will expect to have a CANbus link to the engine controller and may not work without, your DTi probably hasn't got this. You may find that an auto transmission from Omega A can work without. ( these are still 4L30 )

if you must have diesel, the safest bet would be a GM 180 transmission, which isn't electric, but only 3-speed and non lock-up.

[rockwool]

AR25/35 is a 4L-30E

there are two bellhousing patterns for Omega B - this first is for all of the petrols and all of the 4-cylinder diesels. The second is for the 6-cylinder BMW diesel

the 5-speed auto was only fitted to the 6-cylinder diesel. No-one on here has ever seen one.

Any Omega B auto transmission will expect to have a CANbus link to the engine controller and may not work without, your DTi probably hasn't got this. You may find that an auto transmission from Omega A can work without. ( these are still 4L30 )

if you must have diesel, the safest bet would be a GM 180 transmission, which isn't electric, but only 3-speed and non lock-up.

Great info, thanks, and yes AR25=4L30E.

So then I won't use box from a 6cyl Omega (for the better since I buy used) and then I guess I don't have to bother with the 5-speed either.

Did I read you right that an Omega A box might work without but might just aswell not work?

If I scrap a complete petrol engined Omega B can I then use its CANbus link on a DTI, or does it only work on petrol engines? 

I already have bought a 1999 Omega 2.0DTI and wouldn't trade it for anything but a 2.2DTI (or newer). Common-rail is superior jugde after my priorities and I just don't like gassers much,



That leavs me with having to get a bellhousing from a 4L30E welded on to a TH180 done by a professional, if I want it on the DTI, am I right? I want to recollect that will cost me €150, at least.

The second option - to get an Omega A - might involve a car electrician for, what, an hours work?

Third option (if CANbus link is compatiable) will definately need a car electrician but for more than €150 worth of work (that's two hours)? Maybe just one hour at an Opel specialist if the latter is a must. Is it?

[rockwool]

Any Omega B auto transmission will expect to have a CANbus link to the engine controller and may not work without, your DTi probably hasn't got this. You may find that an auto transmission from Omega A can work without. ( these are still 4L30 )

I have to throw my questions from the post above out there again (to whom ever has the knowledge) but the two most important to know are:


1) Did I read you correct that an Omega A box is still a gamble, but less so than an automatic from an early Omega B (1998 änd older)?


2) Can a CANbus link from a petrol engine (like for instance a 115hp 1995 OMEGA GL 252P6) work on a 2.0 DTI, or is it engine specific?


Cheers for all help so far!