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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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aw55-50 v aw50-42Views : 851 Replies : 5Users Viewing This Thread : |
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Oct 13th, 2017, 11:53 | #1 |
New Member
Last Online: Mar 5th, 2023 16:23
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Location: South Darenth
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aw55-50 v aw50-42
hi all
my gearbox broken. my car is a 1999 V70 2.5T petrol with a AW50-42 gearbox. so two questions: 1, can i put any AW50-42 box back in? are the bell houses the same on a 2.0, 2.5 diesel, 2.3 T5 and gear ratios? 2. can i replace with a AW55-50 box? i know will need things like the gear shifter and gearbox ecu. but is it a replaceable option without major surgery. any help much appreciated David |
Oct 15th, 2017, 09:28 | #2 |
Senior Member
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Hello there glad to know I'm not on my own with the 5 Speed auto.
You can't change it to a 4 Speed auto. You cannot just change to manual as it's ME7 system. Why not fix the auto ? I'm in middle of fixing mine...suffering from flares and smashing into gear or not going into gear at all.
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Current Cars Volvo 850R Estate 1996 Manual Conversion SLK AMG 350 R172 |
Oct 15th, 2017, 14:42 | #3 |
VOC26332
Last Online: Apr 1st, 2024 22:25
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Location: Leigh, Lancs
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On the 1999 V70 with the AW50-42 the bell housing used on the diesel is different to the petrol engined one.
Both bell housings have the same 'gearbox proper' mounting bolt layout. I believe there can be different final drive ratios too. Early AW50-42 gearboxes have some different types of sensors though case threads and drillings are the same. With determination and research these problems can usually be overcome - the replacement gearbox I fitted in my V70 diesel came from a C70 petrol. I did a thread on here 2 - 3 years ago but only actually changed the gearbox after initially trying to repair the original box - so the swapout is later in the thread. Colin
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Oct 15th, 2017, 16:53 | #4 |
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can be done but its not as easy as a pre ME7 swap
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Oct 20th, 2017, 11:17 | #5 |
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Last Online: Mar 5th, 2023 16:23
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Location: South Darenth
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Thanks all.
If i knew where to buy bits for box might give it a go. Basicall a drive shaft fell out of box and i believe the end of the driveshaft has burred over the splines in the diff unit. i know its not the driveshaft as i filesd the end down to test it. so what i need is one part of a diff. not interested in putting a manual in just everything else on car good. Local gearbox garage wants £2700 for a recon box. ooouuuch well thanks for your replies David |
Oct 20th, 2017, 11:31 | #6 |
Senior Member
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Find a scrap box and get diff out. Bit of a task.
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Current Cars Volvo 850R Estate 1996 Manual Conversion SLK AMG 350 R172 |
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auto box v70, auto gearbox swap, gearbox failure |
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