What Gearboxs Fit

[Lurch]

It seams people are getting a bit confused so I've copy & pasted from another post:

5 Speed Gearbox's from:
280ZX
240/260Z (775mm long)
240K Skyline
C210 Skyline
R31 Skyline (Bellhouseing needs changing)
S13/S14 Silvia/180SX SR20 & CA18 engine (Bellhouseing needs changing)
S1/2 Bluebird (S3/CA20 box's; Bellhouseing needs changing)
200B
240/260/280C sedans

These all fit, BUT they have different mounts & different internal ratio's & gear sizes.
There may be a bit of mucking about getting them to fit.

The early 240Z box is called a 71A (has the output flange at the back of the box).
Late model 240Z & 260Z is called a 71B box,
And the R31 skyline, R32 GTST Skyline & S13 (SR & CA) boxes are all called 71C's.
They are all just evolutions of the same box.


The only ones that WON'T be suitable are:
R30 Skyline
Stanza SSS
Any of the Datsun L4 4-speed boxes.
These gearbox's are around 660mm in length.

These are 'short' boxes & are not long enough.

The box's from the R33 Skyline & the 300ZX (Z32) will fit but require bellhousing modifications.

When fitting a 260Z gearbox into a 240Z, normally the 260Z shifter will hit the front edge of the centre console (due to the fact the 260Z box has a shorter extension housing.
This is how you get the 260Z shifter to come up in the correct position - heat it up with the Oxy torch & put a few bends in it!



---------------------------------------------------

260Z Gearbox Ratios are:

1st:  2.906
2nd: 1.902
3rd:  1.311
4th:  1:1
5th:  0.864
Rev: 3.382

(Open for correction at this time!)

---------------------------------------------------
Speedometer Drive cogs:

YELLOW is the 16 tooth for the 3.36  Nissan Pinion Assy P/N: 32702-58S16
BLACK is the 17 tooth for the 3.54    Nissan Pinion Assy P/N: 32702-58S17
BLUE is the 18 tooth for the 3.70      Nissan Pinion Assy P/N: 32702-58S18
WHITE is the 19 tooth for the 3.90    Nissan Pinion Assy P/N: 32702-58S19
RED is the 20 tooth for the 4.11       Nissan Pinion Assy P/N: 32702-58S20
PURPLE is the 21 tooth for the 4.38   Nissan Pinion Assy P/N: 32702-58S21

HTH 

[nizm0zed]

awesome info there lurch, By chance, if anyone knows (or can measure) what is the lengths of the boxes? from bellhousing flange to output shaft flange?

i have a spare box that i suspect may be a short one, but dont know.
I only knew it was from a L series engine of some description.

I guess to add to it, if anyone does have actual gearbox ratios, it would be good to keep all in one thread, would make a good resource for selecting approriate ratios to suit particular applications.

[Lurch]

Updated.

[NZeder]

There is a rare factory L6 71C box I know I have one it is from a Nissan Laurel C32 fitted with a LD28 so I have not found out the ratio's yet but it is a L6 71C from the factory ie no mods to the bellhousing required.

The partnumber for the front bellhousing on this box is 32101-49L07 and there is an alternative part-number listed as 32101-49L80

[Lurch]

Well I'll be buggered ugly!
Thanks Mike

[NZeder]

Only paid $80 for it too and do you think I can find another one the bellhousing part number shows it was only available on the C32 (Laurel) and F30 (Leopard).

I have not confirmed if this there was ever a 71C box fitted behind the last of the L20ET in the Laurel C31's etc, but I think these boxes were only available on the LD28 powered cars before the RD28 was used to replace the LD.

Saying of the day:
Do not disturb......already disturbed

[Neuby]

Not sure if its known, the gearbox spline on a 260Z tailshaft will fit a RB20DET gearbox.  I was bored and my RB20 box was sitting next to my 260Z tailshaft and I thought "what if.....?".

[Lurch]

That's coz it's basicly the same box, Newby

[Lurch]

Updated

[Whittie]

There is a rare factory L6 71C box I know I have one it is from a Nissan Laurel C32 fitted with a LD28 so I have not found out the ratio's yet but it is a L6 71C from the factory ie no mods to the bellhousing required.

The partnumber for the front bellhousing on this box is 32101-49L07 and there is an alternative part-number listed as 32101-49L80

The local mechanic in Perth here has seen a few of these boxes on Z's he has wrecked. At the time he never thought anything of it and it the gearboxes were rubbish just threw them out.

 When I was doing the 71C gearbox swap he swore blind that he had seen a box come off an L series with the larger bearing hole and skimmed face, good to know he wasn't mad cause in the last year he hasn't found another anywhere despite looking.

Does anyone know if it's possible to buy these bellhousings? Would save some pain instead of modifying them.

[dazzed]

The local mechanic in Perth here has seen a few of these boxes on Z's he has wrecked. At the time he never thought anything of it and it the gearboxes were rubbish just threw them out.

 When I was doing the 71C gearbox swap he swore blind that he had seen a box come off an L series with the larger bearing hole and skimmed face, good to know he wasn't mad cause in the last year he hasn't found another anywhere despite looking.

Does anyone know if it's possible to buy these bellhousings? Would save some pain instead of modifying them.

hey???

[dazzed]

It seams people are getting a bit confused so I've copy & pasted from another post:

5 Speed Gearbox's from:
280ZX
240/260Z (775mm long)
240K Skyline
C210 Skyline
R31 Skyline (Bellhouseing needs changing)
S13/S14 Silvia/180SX SR20 & CA18 engine (Bellhouseing needs changing)
S1/2 Bluebird (S3/CA20 box's; Bellhouseing needs changing)
200B
240/260/280C sedans

These all fit, BUT they have different mounts & different internal ratio's & gear sizes.
There may be a bit of mucking about getting them to fit.

The early 240Z box is called a 71A (has the output flange at the back of the box).
Late model 240Z & 260Z is called a 71B box,
And the R31 skyline, R32 GTST Skyline & S13 (SR & CA) boxes are all called 71C's.
They are all just evolutions of the same box.


The only ones that WON'T be suitable are:
R30 Skyline
Stanza SSS
Any of the Datsun L4 4-speed boxes.
These gearbox's are around 660mm in length.

These are 'short' boxes & are not long enough.

The box's from the R33 Skyline & the 300ZX (Z32) will fit but require bellhousing modifications.

When fitting a 260Z gearbox into a 240Z, normally the 260Z shifter will hit the front edge of the centre console (due to the fact the 260Z box has a shorter extension housing.
This is how you get the 260Z shifter to come up in the correct position - heat it up with the Oxy torch & put a few bends in it!



---------------------------------------------------

260Z Gearbox Ratios are:

1st:  2.906
2nd: 1.902
3rd:  1.311
4th:  1:1
5th:  0.864
Rev: 3.382

(Open for correction at this time!)

---------------------------------------------------
Speedometer Drive cogs:

YELLOW is the 16 tooth for the 3.36  Nissan Pinion Assy P/N: 32702-58S16
BLACK is the 17 tooth for the 3.54    Nissan Pinion Assy P/N: 32702-58S17
BLUE is the 18 tooth for the 3.70      Nissan Pinion Assy P/N: 32702-58S18
WHITE is the 19 tooth for the 3.90    Nissan Pinion Assy P/N: 32702-58S19
RED is the 20 tooth for the 4.11       Nissan Pinion Assy P/N: 32702-58S20
PURPLE is the 21 tooth for the 4.38   Nissan Pinion Assy P/N: 32702-58S21

HTH 

good info there Lurch , owners can use their satnav to determine exactely what they need

[drzoidberg]

It seams people are getting a bit confused so I've copy & pasted from another post:

5 Speed Gearbox's from:
280ZX
240/260Z (775mm long)
240K Skyline
C210 Skyline
R31 Skyline (Bellhouseing needs changing)
S13/S14 Silvia/180SX SR20 & CA18 engine (Bellhouseing needs changing)
S1/2 Bluebird (S3/CA20 box's; Bellhouseing needs changing)
200B
240/260/280C sedans

In regard to the use of an r31 (rb engine) gearbox, how does the bellhousing swap over work?I have a L20 bluebird 5speed gear box is it just a matter of pulling the belhousings of both boxes swiching them over and bolting the box back together? if so whatcluch/flywheel business is there do you use rb30 or L series?

Any one know how strong blue bird 5speeds are? Relative to say an l28 manual box (280)?

cheers fellas

[dat2kman]

Bluey's and 280zx internals all same, maybe a few minor changes to casting patterns markings, and location of some swiches, ie fuel injection needs to know if you in fifth gear etc.

To use the r31 cluster with centreplate, extension housing assy into a L series bell housing to make it bolt to any L motor, a few things need to be done, drill top selector shaft hole to 16mm use emery to make smooth.
Prize off countershaft bearing on r31 cluster, as you need to use the smaller L series front countershaft bearing.
Behind this bearing is a circlip, holding a stepoed washer onto two tangs on the countershaft.
, i mount this onto a old dummy c/shadt in my lathe and turn it down on outside edge to remove the lip, as ypu need to get rid of lip to be less diam than the L series c/shaft bearing, you can grind it off by hand gringong wheel, it is not important, BUT it has to go back on, and ciclip put back. Push small diam bearing on, and fit L bell, presto the easy way to do it. If you in Brisbane i can have it all done quick as a flash!

[drzoidberg]

cheers for the info. Im in adelaide unfortunatly, iv found a thread on how to do the bell housing swap, but im thinking il just use the blue bird box seeing as its the same box as 280zx thats good news, its been rebiult so id like to use it.