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| Re: GEARBOX NUMBERING AND BASIC INFO.[Revisited] |
Subject: Re: GEARBOX NUMBERING AND BASIC INFO.[Revisited]
by Dodgeman on 2006/6/16 2:54:07
Quote:
feral wrote:
Gearbox Numbering.
The next number such as 56, 60, 63, 71 or 30 (short for 130) is the distance between input shaft and countershaft centres.
A, B, or C is the evolutionary series for the box as they get older. Some boxes have an L suffix for long extension housing versions. Direct drive boxes have a "direct drive" suffix after the box numbers.
56 series boxes come in 4 speed, 5 speed overdrive (rarely), and direct drive option boxes. These are the stock A series boxes from (1000's ???) 1200's 120Y and sunny's and the nismo sports option boxes.
A F4W56L is a rear drive 4 speed wide ratio 56 series box with a long extension housing.
A F5C56A from a 120Y and 310, is a rear drive 5 speed close ratios 56 series box version A .
comments and corrections anyone?
With the recent interest in gearboxes, particularly the five speeds, being shown on this site, I thought it a good time to bump this one up again.
Newbies are advised to start reading from the first post.
There is mention of an OD 56 series 5 speed box but I don't know if such a thing existed.
The 56 series gearboxes were made, as far as I can tell, as a.....
3 speed column shift [R3W56]*
4 speed standard floorshift [F4W56 & F4W56A]
4 speed 'option 1' competition gearbox.[F4C56] [This is a presumed model code]
4 speed 'option 2' serious competition gearbox. [F4?56] [as for Option 1 gearbox]
5 speed GX option gearbox. [F5W56A]
5 speed 'option 1' competition gearbox.[F5C56A]
The close ratio 'option' boxes were normally available only as a separate purchase from the Datsun Competition department [through various outlets], so it did not come as a 'factory' option in B110 & B210 models, however I believe that some dealers in Japan were either fitting 'option 1' five speeds, or buying the conversion parts & upgrading the F5W56A gearboxes in new GX5's during pre-delivery for 'special' customers. This might have happened with the four speed option 1&2 gearboxes also, but the option 2's first gear ratio is the same as second gear in the stock four speed model & it would have been an absolute pig in traffic.
I have not mentioned the B310 here as I have no reference material whatsoever on the competition parts & I do not know if the 56 series five speed was available at all in this model.
I found no reference to a 56 series box with an 'L' suffix & I suspect that this code was used when there was also a short version of the same box.
All 56 series gearboxes are the same length overall as the propellor shafts are the same part numbers for both 3 & 4 speeds in a given model & the 5 speed went straight into my 1000 sedan & used the stock B10 shaft.
*My factory 1000 manual does not use a model code for the two gearboxes, while the 1200 manual calls them R3W56 & F4W56 & both of these are shown in the manuals & parts books with a ball bearing to support the front of the cluster.
The factory B210 [120Y] & B310 [Sunny] manuals call it a F4W56A & these are shown with the Torrington race to support the front of the cluster.
The option 1 & 2 four speeds appear in the B110 competition manual only, so it would appear at this time that they were not available for the B210.
I have not come across any mention of an OD 56 series boxes yet, so perhaps if someone has one, or knows of one, they could let us know.
In fact, any additional knowledge about these little boxes will be greatly appreciated.
So hit the books boys [& girls?] & let the knowledge flow about the 60 series & also the 63 series that were used behind the A series engines so that we can all learn more.
EDIT
Can someone come up with a part number for the cluster for the B210 or B310 F4W56A gearbox. I want to know if they are interchangeable with the 1200's cluster
The 1200's cluster is...
Gear- counter. 29t, 25t, 19t, 13t. ..... 32210- 24900.
It was never superceded in 1200 production & is the same number for the B10 gearbox too.
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