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Gearbox
http://www.ozdat.com.au/forum/viewtopic.php?t=33762		 Page 1 of 1
Author:  IRPSSS [ Thu May 28, 2015 9:33 pm ]
Post subject:  Gearbox
Can anyone tell me what a "Option 1 'Flange Drive' Gearbox" is please.
Author:  180BSSSt [ Fri May 29, 2015 1:56 am ]
Post subject:  Re: Gearbox
Early 240Zs had a flange to bolt the tailshaft to rather than the splined arrangement used in everything since. The box you're asking about is likely to be a factory close ratio box for early 240Zs.
Author:  Baz [ Fri May 29, 2015 9:25 am ]
Post subject:  Re: Gearbox
Option 1 is a rally box. The flange type is an option.
Just a different mainshaft & extn housing.
Author:  Lurch [ Fri May 29, 2015 9:33 am ]
Post subject:  Re: Gearbox
180BSSSt wrote:
Early 240Zs had a flange to bolt the tailshaft to rather than the splined arrangement used in everything since.

Correct. Those gearbox are called 71A's & are longest of the production L-series gearboxs. They are also found in Roadsters.
180BSSSt wrote:
The box you're asking about is likely to be a factory close ratio box for early 240Zs.
I'm afraid that's incorrect.
Option gearbox are the same length (give or take a few mm) as a 71B gearbox (same length as 260Z, 240K, S2 Bluebird...)

Is the OP referring this Option 1 I have for sale?
Option box's have a dogleg shift pattern & closer ratios:
1st: 2.818
1.973
1.470
1.192
1.000

[ img ]
Author:  IRPSSS [ Sat May 30, 2015 12:14 am ]
Post subject:  Re: Gearbox
Thanks all
Author:  dat2kman [ Mon Jun 01, 2015 8:31 am ]
Post subject:  Re: Gearbox
71B Option boxes came in three different gearset ratios.
Option boxes in 71A came in two different gearset ratios.
The 71A boxes had ability to be fitted with two alternate bellhousings, to suit L or U series engine.
71A boxes could also be fitted with either a short ( Roadster) or long (Z) extension housing.
All had rear flange output, and used two piece slip yoke type tailshaft.
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