Building a Stronger 6-spd Man Trans

[theenico]

If I remember the pictures correctly, swapping 6th should be easier than doing the R&P.

6th is at the more accessible end of the shafts. Changing the R&P requires pulling all gears and bearings off the lower of the two countershafts (the pinion gear is made/machined as part of that shaft).

 

[Preloader]

What's #28?
The cornwheel is not the final drive?
If its not than, yes, the 6th gear is right on the end of the 5th and 6th gear shaft.

 

[theenico]

Hahahaha, you said cornwheel. Snicker, snicker.

The crownwheel aka ring gear is indeed 28, but you also have to change the pinion gears.

Edited to remove original unresearched dumba** comment. Further corrections are in my next post below.

 

[Preloader]

There is 6th gear, right under the notorious failure bearing.

 

[theenico]

Yep, and I also realized that I am partially incorrect. F'ing 3 shaft trannies. Both countershafts drive the ring gear, just not at the same time. Look at the 10th picture in the 88th post at this link.

Vauxhall M32 6 Speed Rebuilds

In the photo you can see the ring gear in the windows of both shaft holes. That makes an R&P swap that much more a pain in the arse.

Edit: Here's the photo

 

[Preloader]

ZOMG, the pics in that thread are like gear porn. Can't wait to dim the lights, put on some Lionel Ritchie, and crack open my failed MZ4.opcorn:

 

[theenico]

More porn...

Here's a picture of what needs to be swapped to change R&P ratios:

 

[Preloader]

Now I'm understanding it a lot better. Seeing the cornwheel peaking through the two shaft holes of the case (wow, sounds like porn too) explains how the countershafts output to the crownwheel and ultimately to the axles.

I think the 5th/6th gear swap from the MZ4 is the way to go. It still will be less MPG than a Original MZ4..... Because larger R&P in MZ0.

Also I'm hearing from the VXR guys that a new M32 is now available, with a different case that has cooling fins.

 

[theenico]

Yep. Swapping those should be way less involved than 2 counter shafts and a crownwheel gear.

Edit: You should say the last bit in Beck's voice.

 

[Preloader]

Bottles and cans and just clap your trans, and just clap your trans.

 

[theenico]

Just don't get down with a tranny that has the clap.

 

[Preloader]

You can't get the clap from handy J's.opcorn:

 

[theenico]

True that.

More porn showing the counter shafts stripped: Vauxhall M32 6 Speed Gearbox - Repairs / Rebuilds / Upgrades

 

[Preloader]

M32 eye candy..... Gay music though.:blankface:

 

[firstorbit84]

Nice video. I really thought I was going to disagree with you on the music, but you were right.

 

[Preloader]

Some fun pics and info:

https://www.facebook.com/media/set/?set=a.222779744430616.52834.207028252672432&type=3

I've chatted on the VXRforums with this guy. They use the M20 option M32 over there. Essentially he upsizes the 6th gear shaft bearing, and replaces all the others with steel retainer Timken bearings.

 

[shorebreeze]

Any recent modifications with this transmission? I've ended up ordering the auto with the turbo, but am still curious about this.

 

[mja]

Do the different M32's have the same diameter and spline count on the shafts? Specifically the MZ4 (sonic 1.4) and MR5 (sonic RS).

I'd want to swap the 3.65 R&P & 0.61 6th gear from the MZ4, to the MR5 trans.

Ideas for gears/internals:
- Deburring
- Cryo treatment
- Shot peening
- WPC/micro shot peening

Transaxle:
- Cooler: pump/radiator/fan - temperature controlled
- Aluminum flywheel
- Upgraded clutch (are there smaller diameter clutches available?)
- Wavetrac

Anyone have part numbers on the upgraded Timken bearings or the 6th gear bearing? I may have to head over to the Vauxhall forum for that info.