That seems like the translation is, "the problem is that we didn't design the transmission to shift into gears. This transmission was designed to only be barely usable. It is also so cheap that if there is a problem then we will give you a new one. But now there is too many of you that it is no longer making us any money. We are now considering this to be the consumers problem."
M32 Trans Teardown
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That seems like the translation is, "the problem is that we didn't design the transmission to shift into gears. This transmission was designed to only be barely usable. It is also so cheap that if there is a problem then we will give you a new one. But now there is too many of you that it is no longer making us any money. We are now considering this to be the consumers problem."
I definitely love that we have found a simple, suitable and viable solution. It doesn't take any time to implement and makes the transmission select gears as it should.
All it took was someone willing to take the transmission apart, a few people that are enthusiasts to come up with some sort of solution.
Scot
Athletic Supporter
Puzzling that our clutches release so early (high) that many of us are not releasing the clutch enough.
I work for GM and I am truly disappointed with this response.
This belies any reason - if we pester a dealership enough, they'll replace the entire transmission. Wouldn't it be smart to fix the root cause?
Sent from my XT1080 using Tapatalk
I work for GM and I am truly disappointed with this response.
This belies any reason - if we pester a dealership enough, they'll replace the entire transmission. Wouldn't it be smart to fix the root cause?
Sent from my XT1080 using Tapatalk
Swordsmith
242hp/252 ft-lbs BNR EFI
For all we know, they have replaced it in the 2014 transmission, and are just hoping they can pretend the problem in the 2012 and 2013 is customer fault. That way, they don't have to fix or replace the tens of thousands of transmissions already on the road.
laborsmith
New member
What Swordsmith ^ said.
Laborsmith
Laborsmith
sx sonic
New member
I hope this is the case, if so I can accept the response. As long as corrective updates are made at the production level.
ChrisJ
Active member
If that is true, it might be wise to tell some of us.
I'll need a new Sonic by around 2015 and not so sure I want to buy one thinking its got the same cheesy trans.
Don't get me wrong, mine practically never does it but I know its because I'm so easy on things. But that's not the point.
1.4l_of_fury
New member
Has there been any updates on the metal shift fork tips being made? If I can't fix the things that are bound to break I'm not going to be able to justify keeping my sonic...
sx sonic
New member
So I had a curious thought, couldn't GM make the shift forks with a wider tip so it doesn't need a plastic or bronze/brass tips added on? You know, cast a fork with a wider tip and machine it to the proper tolerance.
To me it seems like a good option for eliminating the issues with the plastic tips falling off, would be great at controlling slop in the engagement collar. It could also reduce inventory and extra tooling, they would only need a jig and common lathe tooling to machine it so cost might be close to the same. And compared to bronze/brass tips it would eliminate the inventory of tips and alignment pins or brazing and eliminate several maching operations.
The only issue I see is if the tip must be a softer material, and if the fork tip end is undersized it would mean a scrap shift fork versus just a scrap plastic or bronze fork tip which are cheap in comparison.
Thoughts?
To me it seems like a good option for eliminating the issues with the plastic tips falling off, would be great at controlling slop in the engagement collar. It could also reduce inventory and extra tooling, they would only need a jig and common lathe tooling to machine it so cost might be close to the same. And compared to bronze/brass tips it would eliminate the inventory of tips and alignment pins or brazing and eliminate several maching operations.
The only issue I see is if the tip must be a softer material, and if the fork tip end is undersized it would mean a scrap shift fork versus just a scrap plastic or bronze fork tip which are cheap in comparison.
Thoughts?
That is how they used to design the forks. I was only suggesting brass since it could be poured into a mold and produced easily. My bet is that the plastic is there to reduce NVH and suffers from less reliability to do so.
In the consumer's mind, if it makes noise, it is broken.
We need someone to make a M32 Preloader Edition. Something that can stand up to ultimate trendsetting. Anyone willing to start putting together a spec sheet? I'm thinking it will have to be a close ratio gear set. It will also need to be able to shift reliably at 8k rpm or higher.
Preloader
The M32 Martyr
I supposed I could weld up the tip and grind it down to the dimensions of the plastic guide.
Hadn't thought of that. Don't see why friction would be an issue, so long as I polished it well.
Hmmmm. I know bronze would be preferable, but it got bronchitis......lord Jesus.
Hadn't thought of that. Don't see why friction would be an issue, so long as I polished it well.
Hmmmm. I know bronze would be preferable, but it got bronchitis......lord Jesus.
Preloader
The M32 Martyr
The synch ring appears to be pretty hard steel. And honestly I'd be ok if it lasted 10k miles. My goal is to build an M32 that can withstand track abuse. I'm not as worried about building one that can last forever.
I will soon have a rotation of 3 M32s. 2 of which are damaged.
If I can manage a way to repair them with garage tactics, I can stop buying the damn things.
I already expect to be rebuilding my beefed up 1.4 no less than every 20k miles.
I will soon have a rotation of 3 M32s. 2 of which are damaged.
If I can manage a way to repair them with garage tactics, I can stop buying the damn things.
I already expect to be rebuilding my beefed up 1.4 no less than every 20k miles.
mitdr774
also a dinner prick
That is about how long a Getrag F23 would last behind my built LD9 engines. For an economy car that is built up to make a lot more power than stock, that is probably a reasonable goal for trans life.
mja
Site Supporter
Yes the nv4500 is a heavy beast. The bellhousing and shift cover/tower are aluminum iirc. I managed to completely grenade a case right down the center back when...the case couldn't crack in half they said.
To continue the brass shift fork thread... here's a few examples of what pre was talking about a while back:
Tremec TR-6060 Complete Bronze Shift Fork Pads Upgrade Kit - Hawks Third Generation
Darkside Developments - 02M & 02Q Steel Selector / Shifter Fork Bronze Sliders
As an aside, our shift forks are not cast, from pictures they look to be stamped steel and welded :/ Not sure if this transmission is worth making too many custom parts for, after a certain power level it seems like it'd turn into expensive garage art. The Vauxhall/Opel forums present many issues historically with this trans.
