Tuning Multijet 150 - looking for full induction / cold air intake??

[sussexa]

as said earlier having worked on it a bit I don't think it is a m32 looks more like c630 and in the link I posted to oil change I list a few correct spec oils and recommended oils(oil for a std car not always what youd use on a tuned hard driven car)and it does have a dipstick on top of the diff.
https://www.fiatforum.com/stilo/416069-jtdm-16v-6-speed-gearbox-oil-change.html?416069=#post3998955

 

[dtimmins1985]

It is definatley the M32! 6 speed, to get reverse you pull up and push to the right and down (bottom right of the shifter).

Ill take some pics this evening if possible, also - definatley going to have it rebuilt and have the diff fitted - its started to make a slight ticking noise under load in 3rd gear, can sometimes hear it in 2nd but very rarley, i thought it was the engine but its not, its defo the box - hope it will hold out for 2 - 3 months as i really cant afford the job right now - not with the expense of the diff too anyway.

 

[sussexa]

I did my plastic top hat bushes on the gear selector end on the gearbox for gear stick not self centering and comparing what i saw and info from the alfa crew its a c630 the m32 on all imagesive seen have a different lever completely.
Google images of both plus some quick shift kits then look at your selector on the gearbox and you decide.

 

[dtimmins1985]

I did my plastic top hat bushes on the gear selector end on the gearbox for gear stick not self centering and comparing what i saw and info from the alfa crew its a c630 the m32 on all imagesive seen have a different lever completely.
Google images of both plus some quick shift kits then look at your selector on the gearbox and you decide.

I have just googled m32 gear knob - it seems that reverse is top left on these boxes.

Is that correct?

If so, I must have the c630 then as my reverse is a pull then slide to the right and down.

Im hoping i have a c630 - can we fit the q2's to these boxes?

 

[g8rpi]

Hi,
on my Croma mJTD 16V with a M32 gearbox (confirmed) reverse is lift ring, left against spring and forward.

Robert G8RPI.

 

[dtimmins1985]

Hi,
on my Croma mJTD 16V with a M32 gearbox (confirmed) reverse is lift ring, left against spring and forward.

Robert G8RPI.

That confirms it for me then - mine is the same as my 1.2, the gear knob is the same too, lift ring, right against spring and pull towards you (as if you was going for 6th).

Will get it double checked in a few weeks, will hopefully buy a diff kit for it after July, from what i have read - the c630 does have bearing issues too, not as common as the m32's but they do still suffer so frequent oil changes required, will get the gearbox specialist to do mine as i dont think ill be going near it or risking doing it wrong...

Anyone know what the rubber boot is on top of my gearbox? its quite big, and has perished somewhat around the bottom - should i replace it?

I only noticed it when poking around this evening, dont want to tug on it as it may just tear off - its definatly split at the bottom left side.

its circled in red below, by the way - this is not my gearbox lol, i wish i had that short shifter on mine but - from looking at the image, its the same as mine with the same rubber boot on the top near the gear selector thingy.

 

[Artermis]

That confirms it for me then - mine is the same as my 1.2, the gear knob is the same too, lift ring, right against spring and pull towards you (as if you was going for 6th).

Will get it double checked in a few weeks, will hopefully buy a diff kit for it after July, from what i have read - the c630 does have bearing issues too, not as common as the m32's but they do still suffer so frequent oil changes required, will get the gearbox specialist to do mine as i dont think ill be going near it or risking doing it wrong...

Anyone know what the rubber boot is on top of my gearbox? its quite big, and has perished somewhat around the bottom - should i replace it?

I only noticed it when poking around this evening, dont want to tug on it as it may just tear off - its definatly split at the bottom left side.

its circled in red below, by the way - this is not my gearbox lol, i wish i had that short shifter on mine but - from looking at the image, its the same as mine with the same rubber boot on the top near the gear selector thingy.

That rubber boot sits over the selector fork that translates your left and right movement into up and down movement on the fork. Long as it isn't badly damaged dont worry about it.

And like I said, I dont believe you'll have an M32 in that. Think you predate production on them! The other boxes are more or less bulletproof so dont fret it. Sure you'll get the odd failure with anything but nothing like the nightmare that is the M32.

 

[dtimmins1985]

That rubber boot sits over the selector fork that translates your left and right movement into up and down movement on the fork. Long as it isn't badly damaged dont worry about it.

And like I said, I dont believe you'll have an M32 in that. Think you predate production on them! The other boxes are more or less bulletproof so dont fret it. Sure you'll get the odd failure with anything but nothing like the nightmare that is the M32.

The M32 was in production in 2006 - i know as I had an 06 and 07 Astra SRI 150 - that had the m32, they where both hire cars and i worked for the hire company at the time, got to drive some lovely cars - the 06 astra box started to fail on me one weekend when going to blackpool on a crazy midnight drive, as soon as you let off the clutch into 2nd - it would pop out and would not go back into gear, so was using 1st to 3rd technique then 3rd started doing the same so it was 1st to 4th and ride the clutch - in the end we had the box replaced £1200 back then (it was back in 2009).

I will get a 2nd opinion on what model of box i have before i buy the diff kit.
Just waiting on an answer from a friend as maybe i dont need to have this rebuilt so will get a friend to install the diff and check my DMF - its supposed to have been replaced when clutch was done but who knows, i hope it wasnt welded so want that looking at too, last thing i want is the box or shafts breaking.

 

[Artermis]

Unfortunately vauxhall models are rife with the damned things.

If memory serves they didn't turn up with Fiat / Alfa until the slightly later JTDm models, not the JTD M-Jets. I'd have thought you bloody unlucky to wind up with an M32.

It can be difficult to spot but you'll soon know for certain what you've got if you can find the gearbox number printed on the box. It's stamped in the metal an starts M32.

Again, if memory serves, I've seen it suggested the M32 is so named because it's rated for 320Nm of torque. You'll be running circa 300Nm factory in an MJ so you'll find yourself more likely to encounter issues if you exceed this (think remap).

I would hope you have one of the C series gearboxes. I heard of 450Nm being run through those!

 

[g8rpi]

The 1.9 16V 150hp mJTD in my Croma produces 320nm (and the 2.4 20V has 400nm) without any problems. As discussed in other posts, if there was an inherent issue with the M32 there would be thousands of broken Vauxhalls out there, but there isn't. I think there was an initial design issue with the oil level. This was fixed by increasing th level, but this means you can't check the level without draining the 'box. This may have resulted in failures due to leaks or incorrect maintenance. There also seems to have been issues with specific batche or make of bearings. Not withstanding these issues, there does not seem to be a fundamental issue with the M32.

Robert G8RPI.

 

[Artermis]

The 1.9 16V 150hp mJTD in my Croma produces 320nm (and the 2.4 20V has 400nm) without any problems. As discussed in other posts, if there was an inherent issue with the M32 there would be thousands of broken Vauxhalls out there, but there isn't. I think there was an initial design issue with the oil level. This was fixed by increasing th level, but this means you can't check the level without draining the 'box. This may have resulted in failures due to leaks or incorrect maintenance. There also seems to have been issues with specific batche or make of bearings. Not withstanding these issues, there does not seem to be a fundamental issue with the M32.

Robert G8RPI.

I would to an extent [and very respectfully] disagree.

I know you've said the above before and I think I disagreed then too. I see your point that for the number of units out there it's very probably the case that the % failure rate is really quite small.

The problem is that manual boxes particularly are a very solid and reliable device; the design has been really rather well perfected over the years, so when you start to see the failure rates that the M32 boxes have experienced it stands out, even if it is a fairly small number.

I would suggest even the fact that people know about it enough to be having a serious forum debate about the matter is evidence enough that there is something of a problem with the M32, even if it is something as simple as the oil level being too low.

I would add for the record that I had an Alfa 159, 1.9 JTDm, which did have the M32 in it. I had the oil in the box changed and overfilled slightly (cant remember specifics these days) to prevent any issues. It never had an issue or even suggested it might be starting with an issue though, it was purely precautionary.

 

[sussexa]

the issue is not inflated online as far as ive seen
these guys have done 700 if you trust this page ?
https://www.eco-torque.co.uk/single-post/2016/12/02/M32-GEARBOX-Guide-To-Faults-Fixes
but off topic as im 100% sure mine is not an m32 and mine is a jtdm 16v 150hp stilo 2006.
cant find any images where the id tag sits otherwise id have crawled under my car and taken pics by now.

 

[Artermis]

(and the 2.4 20V has 400nm)

Robert G8RPI.

If you're referring to the 2.4 JTDm certainly from my Alfa experience they don't run the M32 on those. Only the 1.9 JTDm. The 2.4s used to run F40 boxes I'm sure. That might have been the early 2.4 175bhp models in the 156 though. Whether that changed with the later variants (200bhp, 210bhp) found in the 159, Brera, Spider, I don't know.

 

[g8rpi]

If you're referring to the 2.4 JTDm certainly from my Alfa experience they don't run the M32 on those. Only the 1.9 JTDm. The 2.4s used to run F40 boxes I'm sure. That might have been the early 2.4 175bhp models in the 156 though. Whether that changed with the later variants (200bhp, 210bhp) found in the 159, Brera, Spider, I don't know.

You are correct, I must have been asleep. The 2.4 was only available with the
Aisin AF40-6 automatic gearbox.

Robert G8RPI.