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Discussion Starter #1
Hi all,

I know this has been done to death, but please bear with me...:rolleyes:

I've been doing plenty of searches and reading with interest people's experiences of the 1.9 JTDm engined 159 and in particular the M32 gearbox.

I've read that many owners experience problems at 50k miles upwards with standard, unmodified cars, so how on earth do people manage with remapped ones with vastly increased torque? Surely the gearbox would pack up within minutes?

Or do people fit uprated parts to the 'box first before remapping?

Also, can the oil on the M32 gearbox be changed or are they sealed units? If so, how easy is it to change the oil?

Finally, are the gearbox failures on 1.9 engined 159s more common in the TI models with the larger 19in wheels due to the additional load of driving them?

Just wondering really because there's a heck of a lot of 1.9s out there at bloody good prices and with a remap its actually a powerful and quite quick car for the money, providing it can be made to be reliable of course.

J:)
 

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My m32 had done 100k trouble free miles with remap when i sold it. I did change the gbox oil for redline and tried to keep the revs above 2k rpm if wot. Easy to change the oil, just make sure you loosen the filler plug first before draining the oil.
 

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My M32 had done over 100,000 miles before I had the rebuild. Replaced the oil with 3-litres of Titan fully synthetic oil as recommended and it's fine now.

I'm not sure how the gearbox will cope with upgrades if no rebuild has taken place but I'm sure there are plenty out there that have stood the test of time. It's a GM weak point. If it had an Alfa gearbox, I'm sure it would be fine, but there you go.

I think the car is fantastic, economical and reliable. The most reliable Alfa I've owned in fact. Just be careful. The whirring noise from the box sounds like it comes from behind the dashboard - kind of like it could be an internal blower fan motor or something similar. If it is silent, change the gearbox fluid for the Titan Sintofluid 75/80 and put in all three litres. Autolusso recommend this and that's good enough for me!

Take your time, be careful and am sure you'll end up with a car that will last you years...
 

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Discussion Starter #4
Thanks for the responses peeps.

Seems strange that some gearboxes last and others don't. Obviously driving styles will affect things but if they really are that weak then surely the vast majority would pack up regardless!?

When people have their gearboxes rebuilt do the repairers fit uprated parts?

Is there a known fault that causes the problems that could be rectified before a failure?

J:)
 

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Thanks for the responses peeps.

Seems strange that some gearboxes last and others don't. Obviously driving styles will affect things but if they really are that weak then surely the vast majority would pack up regardless!?

When people have their gearboxes rebuilt do the repairers fit uprated parts?

Is there a known fault that causes the problems that could be rectified before a failure?

J:)
Hello

Here is further info about your box

Autolusso - Alfa Romeo Specialist | Alfa Romeo M32 Gearbox

We see a lot of failed boxes and a lots of boxes that have been badly rebuilt, when we open the boxes they tend to be black with burnt oil

To help prevent them failing we put in 3 litres of Titan Sintofluid 75w/80

Ned
 

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When people have their gearboxes rebuilt do the repairers fit uprated parts?

Is there a known fault that causes the problems that could be rectified before a failure?

J:)
This question has been asked many times but nobody seems to want to answer it :confused:.
I assume therefore that what you get back once it's repaired is no better than the original.
Unless someone wants to correct me?
 

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This question has been asked many times but nobody seems to want to answer it :confused:.
I assume therefore that what you get back once it's repaired is no better than the original.
Unless someone wants to correct me?
Been researching this box for a while now as mine is quite notchy.
It is a German gearbox from a company called Getrag.
It is very compact and tends to wear its bearings mainly on its 6th gear shaft due to excess heat, mainly a diesel car problem due to low down torque.
An uprated bearing is available and can be fitted without removing the box.
Adding extra oil ie 3ltrs in total can help and not using 6th gear for too long on the motorway also helps prolong the bearings life.
Some M32 boxes are used in motor racing and to prevent failure they have added an oil cooler.
I put 3ltr MT90 in mine and the change is improved especially in 3rd but still not perfect.
I am booked in to have the bearings inspected as a preventative maintenance measure as I have read the bearing cage can break and spew metal parts into gears costing anywhere from £700 upwards to repair.
I was quoted £300 to replace 3 main bearings by my local mechanic/ friend, if it is required.:thumbs:

Update: Had full rebuild by auto transmission specialists due to shims being incorrect from new.
all bearings replaced and new correct shimming to prevent the bearing spinning in its casing.
Cost £1160 but car was a bargain so still very happy.
 

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well my car is now on 121k and im pretty sure the box has never had any work , its done 7k of that with a map and i recently had to replace the clutch , while at it a swapped the gear oil for 2 ltrs of 10w40 engine oil , box is way smoother than before and ive done 1200 miles without issue
 

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Hello, I posted in meny thereds about the gearbox noise, I\m driving a 159 2.4 so its a F40 gearbox, but still I get the noise whitch sounds like it comes from behind the dashboard, also the gear stick is wobbling when in 3th gear and braking with the motor. I changed the oild with Selenia that is recomanded by the factory, also I bought a new clutch, freewheel.

Ned, Is the solution changing the oil to 3l of Titan Sintofluid 75w/80, od maby getting new bearings >?

Thank you
 
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