34 replies to this topic

[yel327]

Maybe a kid's toy?

Just kidding. Obviously Europe. I'll do some looking and see. Probably a TA sized Opel though.

[limo]

I thought they were originaly german, opel kadet? GM susiduary.
there are 2 versions I believe

[rodomo]

http://cgi.ebay.com....=item483b98d1be

Attached Files

•  CF_Victor%20gbox%20gaskets.jpg   112.51K   4 downloads

Edited by rodomo, 25 September 2010 - 01:14 AM.

[S pack]

Was told many many moons ago the Opel 4 speed gearbox was made in Brazil, don't know if that's really true but that's what a gearbox repair specialist told me.

[yel327]

Opel is an M20 in some Holdens or Toranas. In HR-HG the gearbox code for the Opel was M20, same for LC. Not sure if they were used in TA Torana though.

[limo]

the TA should be 4 cyl with a Vauxhall motor and gearbox, box is not same as opel

[rodomo]

can any body tell me what opel vechicle the opel gearbox for the holdens/toranas was sourced from.thank you.

2 hrs of Googling hasn't found much.

It appears that the box might have been sourced from the Opel GT

From what I can gather, looking at Bedford CF and Opel GT specs, the ratios are the same as LC GTR&XU1

Page 3 here:
http://www.opel6070club.com/tekniset_tiedot/getrag_gt/Getrag-en2.pdf.pdf

http://en.wikipedia.org/wiki/Opel_GT

[wot179]

http://en.wikipedia.org/wiki/Opel_GT

[S pack]

Opel is an M20 in some Holdens or Toranas. In HR-HG the gearbox code for the Opel was M20, same for LC. Not sure if they were used in TA Torana though.

AFAIK the Opel 4spd as fitted to HR, HK & LC 6cyl was not fitted to the TA Torana or any 4cyl LC or LJ Torana.

[S pack]

Opel is an M20 in some Holdens or Toranas. In HR-HG the gearbox code for the Opel was M20, same for LC. Not sure if they were used in TA Torana though.

AFAIK the Opel 4spd as fitted to HR, HK & LC 6cyl was not fitted to the TA Torana or any 4cyl LC or LJ Torana.

so the ta has an m20 as such

If it has M20 on the body plate then yes it is an M20 but not the same as the Opel M20 or the Aussie M20 or the Saginaw M20 and god knows how many other M20s GMH had.
Unfortunately GMH had a bad habit of calling their std 4speed transmissions an M20 regardless of their origins.

[yel327]

Opel is an M20 in some Holdens or Toranas. In HR-HG the gearbox code for the Opel was M20, same for LC. Not sure if they were used in TA Torana though.

AFAIK the Opel 4spd as fitted to HR, HK & LC 6cyl was not fitted to the TA Torana or any 4cyl LC or LJ Torana.

so the ta has an m20 as such

If it has M20 on the body plate then yes it is an M20 but not the same as the Opel M20 or the Aussie M20 or the Saginaw M20 and god knows how many other M20s GMH had.
Unfortunately GMH had a bad habit of calling their std 4speed transmissions an M20 regardless of their origins.

Not a bad habit as such. M20 is an option code for the (normally) standard 4 speed for a model. This can mean a different box as described. Or just different ratios as in the XU-1 with aussie 4speed or HQ commercials. We all know the story about XU-1 but in earlier 6cyl HQ commercials the standard box was the M22 ratio set, but it wasn't called an M22 as it was the only 4speed fitted to these vehicles, so it was still called an M20. Sometime later in HQ it started to be stamped on plates as M22, but this still needs some research as to when (i'm still chasing it as it is important for Sandmans).

[S pack]

Not a bad habit as such. M20 is an option code for the (normally) standard 4 speed for a model. This can mean a different box as described. Or just different ratios as in the XU-1 with aussie 4speed or HQ commercials. We all know the story about XU-1 but in earlier 6cyl HQ commercials the standard box was the M22 ratio set, but it wasn't called an M22 as it was the only 4speed fitted to these vehicles, so it was still called an M20. Sometime later in HQ it started to be stamped on plates as M22, but this still needs some research as to when (i'm still chasing it as it is important for Sandmans).

Yeah, but it can be confusing for the uninformed/novice.

[yel327]

Agree for sure! This is why when talking about these cars especially with those new to it all, we should all refrain from using incorrect terminology like calling a gearbox an M21. Should always be aussie M21, Saginaw M21, Muncie M21 etc.

[bryanw]

this is good info, anyone with a repair manual?
what sort of price would you look at for a second hand unit in good working order?

[rodomo]

Not really relevent to the topic but I found this the other night while googling:
http://www.vibrateso...ansmissions.htm
It only took another 2 hrs tonight to find it again.

[S pack]

Agree for sure! This is why when talking about these cars especially with those new to it all, we should all refrain from using incorrect terminology like calling a gearbox an M21. Should always be aussie M21, Saginaw M21, Muncie M21 etc.

i didnt realise that was the case i always thought m20 m21 m22 then muncie saginaw etc
i know the ta diff is 95 inch and the lc,lj is 100 inch are the diff gears the same as a banjo ,is the ta diff an isuzu diff or shortened banjo becuase i would like to sell the ta's drivetrain and need to be able to describe it correctly and seeing that the g96 means 4.11s it may fetch me some coin if they are banjo gears

G/day Rob

The TA diff is not a banjo diff. The LJ 4cyl & TA Torana diffs were a baby Salisbury type.
G96 = 4.125:1
Std = 3.89:1

Cheers
Dave

[yel327]

No. Salisbury is a type of construction, not an actual diff. Although baby Salisbury diffs from UC, 6cyl and 253 Commodore, 6cyl WB, some Gemini etc used banjo internals and axles. Not sure about TA Salisburys though I doubt they'd be the same thing, never looked!