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Old 11-05-2017   #16
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Re: Multijet 150 - looking for full induction / cold air intake??

Swirl flaps is a git of a job as it requires the inlet manifold to be removed, which in turn requires the mechanical fuel pump to be removed, which means a cambelt job at the same time. If they aint broken don't try and fix them.

What makes you sure you have an M32 box; I wouldnt have expected your car to have one.
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Old 11-05-2017   #17
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Re: Multijet 150 - looking for full induction / cold air intake??

heres the list of parts for the q2
00552 08952 (1 x Q2 diff)

- 00076 55061 (2 x differential bearings)

- 00144 60880 (2 x oil seals)

- 00400 04910 (1 x differential seal)

- 00400 04430 (1 x differential seal)
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Old 11-05-2017   #18
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Re: Multijet 150 - looking for full induction / cold air intake??

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Old 11-05-2017   #19
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Re: Multijet 150 - looking for full induction / cold air intake??

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Old 12-05-2017   #20
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Re: Multijet 150 - looking for full induction / cold air intake??

Quote Originally Posted by sussexa View Post
the q2 used to be cheaper but looks like moved to quaife now
http://www.autolusso-penrith.co.uk/quaife.html
gearbox oil ive used redline mt90 I had a guide somewhere on here
I think its a 630 gearbox more now
http://www.autolusso.co.uk/gearbox-rebuilds.html


here it is
https://www.fiatforum.com/stilo/4160...9=#post3998955
Redline MT90 is not the correct spec for the M32 its SAE 75W-90 GL-4 and should be SAE 75W-85 GL-4. Not that common, but if stuck a Vauxhall dealer should have it. With the known M32 issues I'd not recommend a different oil to that specified. If you look at the spec sheets you will see a significant difference in 40 deg C viscosity and pour point between the Redline MT90 and (say) Castrol Syntrans 75W-85. The level is critical too. There is no dip stick or level plug, you have to drain the 'box and then put the correct quantity in. See https://www.fiatforum.com/croma-ii/4...arbox-oil.html




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Last edited by g8rpi; 12-05-2017 at 08:46.
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Old 12-05-2017   #21
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Re: Multijet 150 - looking for full induction / cold air intake??

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/4160...9=#post3998955
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Old 12-05-2017   #22
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Re: Multijet 150 - looking for full induction / cold air intake??

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.
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Old 12-05-2017   #23
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Re: Multijet 150 - looking for full induction / cold air intake??

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.
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Old 12-05-2017   #24
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Re: Multijet 150 - looking for full induction / cold air intake??

Quote Originally Posted by sussexa View Post
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?
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Old 12-05-2017   #25
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Re: Multijet 150 - looking for full induction / cold air intake??

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

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Old 12-05-2017   #26
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Re: Multijet 150 - looking for full induction / cold air intake??

Quote Originally Posted by g8rpi View Post
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.
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Old 13-05-2017   #27
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Re: Multijet 150 - looking for full induction / cold air intake??

Quote Originally Posted by dtimmins1985 View Post
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.
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Old 13-05-2017   #28
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Re: Multijet 150 - looking for full induction / cold air intake??

Quote Originally Posted by Artermis View Post
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.
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Old 14-05-2017   #29
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Re: Multijet 150 - looking for full induction / cold air intake??

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!
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Old 14-05-2017   #30
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Re: Multijet 150 - looking for full induction / cold air intake??

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.

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