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M32 Gearbox Specialist
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Discussion Starter #1 (Edited)

www.m32guy.co.uk
facebook.com/m32guy



This thread is here to give you some basic information on the infamous M32 gearbox that's well known for it's failures. It's simple & compact design means it's fitted to everything from the Adam to the Insignia's & everything in between. If you own a 6 speed Vauxhall then chances are it's got the M32 box. If your not sure send me a PM with your registration number and I'll find out for you. Let's start with it's most famous fault...




The 6th gear bearing. This bearing sits at the end of one of the two output shafts. Almost every gearbox we see has this fault. It's responsible for your twitchy gear stick & if you leave it long enough the total failure of your gearbox. The image above shows just some of the damage that will occur if you let this happen. Failures like this come about without any further warning so it's not worth the risk. There are companies out there that claim to fit 'uprated' bearings to Combat this failure. Here is the original 6th gear bearing next to the claimed uprated one...



...and here is what can happen to them after less than 30,000 miles


Both have started to fail in the exact same way! These bearings have done similar mileages, in fact the supposedly better uprated bearing had covered less! Not exactly an upgrade is it?

There's nothing wrong with fitting either bearing as both can last well over 100,000 miles if looked after correctly. Just don't be misled into paying extra & thinking your getting something better

There is another option however. Fit bigger bearings. At the M32 Guy we can upgrade your bearings for the same price some charge to fit those not so uprated ones. The difference with our bearings is a bit clearer


Our upgraded bearings are much larger so are better able to cope. They are 12% bigger in diameter and over 22% thicker

Compared side by side, our upgrade bearing overshadows it's little brother & puts others claims of uprated bearings to shame. Why pay for uprated bearings when for similar, sometimes even less money you can have the best bearings you can get for your gearbox? Ask about our big bearing upgrade when you contact us if your still not convinced!

Take a look at our website for more information on our standard repairs, rebuilds & upgrade options. We offer a complete drive in, drive out service as well as arranging a courier for those further afield or you can simply drop your gearbox off yourself.

If you wish to get in touch the easiest way is through our Facebook page. I'll also be on here most days to help answer any questions you may have.

www.m32guy.co.uk
facebook.com/m32guy

You can also email us
[email protected]
or the good old fashioned phone call
075 4647 32 32
(8-5 Mon-Fri)
 

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M32 Gearbox Specialist
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7,197 Posts
Discussion Starter #2 (Edited)
Thought we'd share our latest Facebook post with you all. Two very different cars with the same M32 issues. Both this VXR Astra and Fiat Croma are fitted with variations of the M32 gearbox.
IMG_20180502_143342.jpg
IMG_20180427_172344.jpg
sketch-1525292826871.png

For the full story check our Facebook page below
M32 Guy's Facebook Page
 

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18 Posts
Hello, i have a gtc 1.4T auto and i have read somewhere that i dont have the m32 but what are the common faults with mine please? J13cwj


Sent from my iPhone using Tapatalk Pro
 

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M32 Gearbox Specialist
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7,197 Posts
Discussion Starter #6
Being a auto it won't be an M32 however they did do a semi auto version. Your gearbox code is 6T40 which is a full auto transmission. Automatics are completely different to manual boxes so I couldn't comment on what, if any, common faults they have
 

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M32 Gearbox Specialist
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Discussion Starter #12
A quick reminder that our competition ends midnight this Saturday! Make sure you've liked the competition post and correctly tagged your friend so you both don't miss out! All the details can be found here - M32 Guy's September Facebook Competition
 

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Who won then?
 

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14 Posts
What oils everyone using in the m32 gearbox nowadays, I’ve seen loads of different recommendations from comma to Fuchs to Courtney using valvoline synpower !.
Some are saying use 75w-80 others 75w-90, also how much oil does one put in ?. I’ve read about overfilling by half a ltr, so refill with 2.5 ltr to end up with 2.7 ltr as box retains .2 after being drained.

I plan on changing mine in the V near future as I’ve just bought it with 33k on the clock and shouldn’t think it’s ever been done. There isn’t any whine or noise from the box ATM and the gearsticks ok, just wanna get it done in the hope I don’t get any future issues. I haven’t checked yet weather or not it’s got the later type cover, I don’t even know when that was introduced TBF.

Thanks in advance for any info.
 

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M32 Gearbox Specialist
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7,197 Posts
Discussion Starter #19
We recommend and use Comma MVMTF Plus 75w-80 in all our rebuilds. We do have the occasional customer who like to to provide Fuchs Titan Sintofluid for us to use which we are happy with.

We overfill with half a litre. The earlier endcase has a level plug. Use that to get the factory level, then top up the extra from there. Later endcasing was introduced around the second half of 2012. We have a picture of them side by side on the homepage of our website.

www.m32guy.co.uk
 

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We recommend and use Comma MVMTF Plus 75w-80 in all our rebuilds. We do have the occasional customer who like to to provide Fuchs Titan Sintofluid for us to use which we are happy with.

We overfill with half a litre. The earlier endcase has a level plug. Use that to get the factory level, then top up the extra from there. Later endcasing was introduced around the second half of 2012. We have a picture of them side by side on the homepage of our website.

www.m32guy.co.uk
Cheers for that !.
Doubt I’ll have the later end case then as mines a 2011.
 
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