Omega Owners Forum - AR25 gearbox on chipped 2.5TD

Shackeng Omega Knight Offline Posts: 1640 North Wiltshire Gender: Drives: 2001 3.2 Elite Auto Saloon, 1999 Omega 2.5Td CDX Auto Estate. Trade Card. Halfords TC.	Re: AR25 gearbox on chipped 2.5TD Reply #15 - 11. Dec 2009 at 09:09 Well, its still working, after 24K, so I hope all the negative vibes coming back at me don't cause it to fail. If it does its all your fault
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Omegatoy

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sunny spain!!!

Drives: Omega TD chipped of course,

Re: AR25 gearbox on chipped 2.5TD
Reply #16 - 11. Dec 2009 at 20:19

if it is chipped to full power, then you aint got a ar25 in there!!!
it is possible to rebuild the box with ar35internals, as the major difference is only the amount of clutch plates inside, wonder if its been done this way when it was chipped?
have known a brand new or at least it was only 2000miles old when the car was chipped and it did survive for 3k miles before it gave up the unequal struggle, known 3 or 4 ar25 usually with around a hundred k on them, last less than 200miles
so my opinion is its been done???

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Shackeng

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Posts: 1640
North Wiltshire
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Drives: 2001 3.2 Elite Auto Saloon, 1999 Omega 2.5Td CDX Auto Estate. Trade Card. Halfords TC.

Re: AR25 gearbox on chipped 2.5TD
Reply #17 - 11. Dec 2009 at 20:38

Omegatoy wrote on 11. Dec 2009 at 20:19:

if it is chipped to full power, then you aint got a ar25 in there!!!
it is possible to rebuild the box with ar35internals, as the major difference is only the amount of clutch plates inside, wonder if its been done this way when it was chipped?
have known a brand new or at least it was only 2000miles old when the car was chipped and it did survive for 3k miles before it gave up the unequal struggle, known 3 or 4 ar25 usually with around a hundred k on them, last less than 200miles
so my opinion is its been done???

Thanks OT, I understand that you are the Oracle on 2.5TD's. All I can tell you is that it was chipped 3 years ago by Jeremy Fearn, the 'chipping' purports to give 170-175 BHP. I can only judge on the difference it made to my car, as I have not driven any other Omega, however, it transformed the performance, and if am not careful, it is very, very, easy to leave rubber on acceleration, I have driven much quicker cars, but the performance now is more than adequate. I am wondering if they beefed up the AR25 boxes towards the end of production of the BMW engined car. Undecided

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tunnie

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Drives: 2.2 CD (LPG'd) & BMW R1200 GS

Re: AR25 gearbox on chipped 2.5TD
Reply #18 - 11. Dec 2009 at 20:47

Shackeng wrote on 11. Dec 2009 at 20:38:

Omegatoy wrote on 11. Dec 2009 at 20:19:

if it is chipped to full power, then you aint got a ar25 in there!!!
it is possible to rebuild the box with ar35internals, as the major difference is only the amount of clutch plates inside, wonder if its been done this way when it was chipped?
have known a brand new or at least it was only 2000miles old when the car was chipped and it did survive for 3k miles before it gave up the unequal struggle, known 3 or 4 ar25 usually with around a hundred k on them, last less than 200miles
so my opinion is its been done???

Thanks OT, I understand that you are the Oracle on 2.5TD's. All I can tell you is that it was chipped 3 years ago by Jeremy Fearn, the 'chipping' purports to give 170-175 BHP. I can only judge on the difference it made to my car, as I have not driven any other Omega, however, it transformed the performance, and if am not careful, it is very, very, easy to leave rubber on acceleration, I have driven much quicker cars, but the performance now is more than adequate. I am wondering if they beefed up the AR25 boxes towards the end of production of the BMW engined car. Undecided

All AR25's are the same i believe

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Do you break V6's as often as TheBoy? Then you need tunnie's towing services, recovery costs are just the humiliation of being towed by 2/3's of an engine

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Jimbob Global Moderator Admin Team Offline Third nipple removal completed succesfuly Posts: 20462 Chester / Flintshire Gender: Drives: 52 3.2 MV6 Estate & 98 3.0 MV6 Manual Estate	Re: AR25 gearbox on chipped 2.5TD Reply #19 - 11. Dec 2009 at 21:03 Ive said it in another thread...there seem to be some strong AR25's out there.... My chipped & ported 3.0 estate had an Ar25 for at least 4 years.....now it hasnt been great lately....but it didnt die! I dont hang about either.
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Omegatoy

Omega Baron

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Posts: 3030
sunny spain!!!

Drives: Omega TD chipped of course,

Re: AR25 gearbox on chipped 2.5TD
Reply #20 - 12. Dec 2009 at 18:33

Shackeng wrote on 11. Dec 2009 at 20:38:

Omegatoy wrote on 11. Dec 2009 at 20:19:

if it is chipped to full power, then you aint got a ar25 in there!!!
it is possible to rebuild the box with ar35internals, as the major difference is only the amount of clutch plates inside, wonder if its been done this way when it was chipped?
have known a brand new or at least it was only 2000miles old when the car was chipped and it did survive for 3k miles before it gave up the unequal struggle, known 3 or 4 ar25 usually with around a hundred k on them, last less than 200miles
so my opinion is its been done???

Thanks OT, I understand that you are the Oracle on 2.5TD's. All I can tell you is that it was chipped 3 years ago by Jeremy Fearn, the 'chipping' purports to give 170-175 BHP. I can only judge on the difference it made to my car, as I have not driven any other Omega, however, it transformed the performance, and if am not careful, it is very, very, easy to leave rubber on acceleration, I have driven much quicker cars, but the performance now is more than adequate. I am wondering if they beefed up the AR25 boxes towards the end of production of the BMW engined car. Undecided

heard good things about Jezza fearns before so have no doubt it is chipped he has a reputation for quality work , maybe then just maybe the ar 25 is still hanging on, but it certainly holds the record for longevity with a chipped TD, unless it has actually had the original chip remapped to give higher power in the higher revband and not so much lower down which would give the box an easier time? either way well doe and just maybe as you say a spare ar35 would be a wise investment for the future!! Thumbs Up!

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http://showoffyourcar.com/galleries.asp?carid=1897
as was

http://showoffyourcar.com/galleries.asp?carid=1263
http://uk.youtube.com/watch?v=8z2SMuv8GhA

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Shackeng

Omega Knight

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Posts: 1640
North Wiltshire
Gender: male

Drives: 2001 3.2 Elite Auto Saloon, 1999 Omega 2.5Td CDX Auto Estate. Trade Card. Halfords TC.

Re: AR25 gearbox on chipped 2.5TD
Reply #21 - 12. Dec 2009 at 22:43

Omegatoy wrote on 12. Dec 2009 at 18:33:

Shackeng wrote on 11. Dec 2009 at 20:38:

Omegatoy wrote on 11. Dec 2009 at 20:19:

if it is chipped to full power, then you aint got a ar25 in there!!!
it is possible to rebuild the box with ar35internals, as the major difference is only the amount of clutch plates inside, wonder if its been done this way when it was chipped?
have known a brand new or at least it was only 2000miles old when the car was chipped and it did survive for 3k miles before it gave up the unequal struggle, known 3 or 4 ar25 usually with around a hundred k on them, last less than 200miles
so my opinion is its been done???

Thanks OT, I understand that you are the Oracle on 2.5TD's. All I can tell you is that it was chipped 3 years ago by Jeremy Fearn, the 'chipping' purports to give 170-175 BHP. I can only judge on the difference it made to my car, as I have not driven any other Omega, however, it transformed the performance, and if am not careful, it is very, very, easy to leave rubber on acceleration, I have driven much quicker cars, but the performance now is more than adequate. I am wondering if they beefed up the AR25 boxes towards the end of production of the BMW engined car. Undecided

heard good things about Jezza fearns before so have no doubt it is chipped he has a reputation for quality work , maybe then just maybe the ar 25 is still hanging on, but it certainly holds the record for longevity with a chipped TD, unless it has actually had the original chip remapped to give higher power in the higher revband and not so much lower down which would give the box an easier time? either way well doe and just maybe as you say a spare ar35 would be a wise investment for the future!! Thumbs Up!

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