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[Datsun 1200 encyclopedia]

5-Speeds

From Datsun 1200 Club

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Categories: Transmission Modifications | Transmission

The only Datsun 1200 that came with a 5-speed was the Japan-market 1972 GX-5 model. However any A-series 5-speed will bolt to the A12 engine with some degree of modification.

Contents

Overview

The Datsun 1200 GX-5 model came with a non-overdrive five speed. B210 and B310s came with various 5-speeds that can be fitted to B110:

  • F5C56 (B110) non-overdrive a la B110 GX-5
  • F5C56A (B210)
  • FS5W63A Overdrive, JDM HB211, JDM HB310 Sunny (Coupe only), USA B210s
  • FS5W60L (B310 - HB310) overdrive (1979)
  • FS5W60A (GB310 - PB310) overdrive (1980-1982)
  • RS5W60A (Vanette) is an external shifter model, but can be used for parts for the FS5W60A.

Why Should I get a 5-speed?

Adding a 5-speed is one of the best improvements that can be made to the Datsun 1200. Easier, quieter more efficient highway cruising will result. This was Mareo's idea, and I think he might be right.

Why should I not get a 5-speed?

On the other hand, if you don't do much highway driving consider that the A12 4-speed is lighter and may have less friction (meaning better fuel economy and a little more horsepower makes it to the pavement).

What types of 5-speeds are available?

  • 56-Series Transmission
    • small, light, with visible ribs along case similar to B110 4-speed
    • Suitable for A12 engine. Not strong enough for A14
    • The 5-speed versions were 1:1 direct fifth-gear (non-overdrive), called in Japan the "direct mission"
    • Fitted to B110 GX-5 and early (A12T) B210 GX-5
  • 60-Series Transmission
    • smooth-case medium-size transmission suitable for A14 and A15
    • These come in 60L (dogleg, 1979) and 60A (non-dogleg, 1980-1982) varieties
    • Fitted to B310
    • Vanettes have the "R" version (remote shifter for column shift) so it is not a feasible choice. See 5-speed
  • 63-Series Transmission
    • large trans commonly used with L-series engines, a version was also fitted to A-series engines in B210s.
    • Overkill for the A-series engines, strong enough for supercharged A15
    • The 5-speed version is a "dogleg" shifter.
    • Fitted to North American B210 5-speed hatchbacks from 1976-1/2 through 1978 model years, and starting in 1977 for Canada

How easy it is to swap in?

Any A-series rear-wheel-drive 5-speed will bolt up with only slight modification.
This means any 5-speed from a:

* 1974-1978 B210 (120Y)
* 1978-1982 B310 (210/Sunny)


And, these 5-speeds are designed for the A14 and A15, so they will handle the extra torque of these motors (The A12 4-speed is a little weak to use with an A15).

See:
* 56-Series Transmission
* 60-Series Transmission
* 63-Series Transmission

Where can I get one?

In USA, the B310 5-speed is common and inexpensive. Just look for a 1979-1982 Datsun 210 (Nissan body type B310 aka Sunny). You can often buy a whole car for about $500 or less. In the wreckers, transmissions go for about $200 u-pull. The B210 5-speeds are less common, but go for the same price if you find one (prices last checked in 2010).

In Australia, ask around. They can be hard to find and expensive.


Be sure to get:

  • Clutch disc for 63-series trans differs from all others, so get the matching clutch disc. All other 5-speeds use the same splines as stock Datsun 1200.
  • The automatic crossmember (reversed) may work with some 5-speeds. In automatic 1200 bodies, a 5-speed reportedly bolts up with the crossmember
  • The transmission mount. There are various types, so get the one with the transmission
  • Clutch release lever and release bearing (throwout bearing)
  • Engine plate, if the 5-speed used one. The release bearing sleeve and plate are a matched set.


  • You may use your existing flywheel and clutch cover
  • Propeller Shaft for 63-series matches the 1200 automatic driveshaft. The 60-series 5-speeds use the same driveshaft as the stock 1200 4-speed.

Shift Patterns

Most of the 5-speeds use a "dogleg" shift-pattern (aka 'reverse shift').

R-4
 135
  10121.jpg

ONLY the 60A 5-speed is a non-dogleg. It was used starting with 2nd-year B310, from late 1979.

Dogleg
FS5C56A
FS5W63A
FS5W60L
Non-dogleg: FS5W60A
See main article: Dogleg

Are there any close-ratio or non-overdrive 5-speeds?

The 1984 Nissan Competition Parts catalog says:


The 5-speed transmission (F5W56A) was originally installed on certain non-USA models of the 1200.[JDM Sunny 1200 GX5] With the stock gearing this transmission works very well for street, slaloms, high-speed time trials or rallies. With the optional gearing (32010-H7220N), it is the best production-based transmission available for racing versions of the 1200, B210 or 210 Datsuns. The synchro mechanism is the servo-type (steel).

The Part Number above [3210-H7220N] is a Nissan Competition number. They often put N or R after the regular number. Without or without the 'N' suffix, that number describes the 56A five speed 'Option 1' close ratio competition transmission for these models.

The F5C56A [JDM Option 1] is as rare as hen's teeth. These were racing parts, and thus are difficult to find and expensive. Some Japanese dealers fitted them to retail GX models for special customers. The Japan domestic model Datsun 1200 GX-5 came with the wide ratio F5W56A as standard. This was also available from Datsun Competition.

The Option 1 box came with the ratios of
1st 2.676
2nd 1.691
3rd 1.398
4th 1.181
5th 1.000
Rev 2.877

The Option 2 box was for Japan Domestic Racing.

  • The factory 1974 Datsun B110 Competition Tune Up Manual lists only the Option 1 & 2 four speeds [56 series trans] which were superseded by the Option 1 five speed [56A trans] The ratios are as listed above except for 4th gear which is shown in this book as 1.182.

The factory 1974 Datsun Sunny 1200 [K]B110 Sports Option parts Catalogue lists only the Option 1 five speed with the ratios matching those listed above exactly. There was no Option 2 five speed listed in the Japanese Datsun Sunny 1200 [B110] Factory competition literature.

I speculate that the US arm of DatsunSport quite possibly listed the stock F5W56A [wide ratio trans] as their Option 1 gearbox & the real Option 1, the close ratio F5C56A competition trans, as their Option 2 offering, thereby confusing the situation completely. [Author KB10]


B110 GX5 JDM came with
1st 3.757
2nd 2.374
3rd 1.659
4th 1.254
5th 1.000
Rev 4.040

B210 JDM Coupes came with:
1st 3.757
2nd 2.374
3rd 1.659
4th 1.291
5th 1.000
Rev 4.040

The factory "Datsun 1200 Sports Option Parts" Catalogue for the "Model: B210, KB210 Series" lists an Option 1 five speed 56A trans. It is identical in every way to the one listed in the 1200/ B110 factory competition literature. There is no Option 2 trans listed here either. The stock B210 Sunny GX5 used the F5W56A trans.

The overdrive 5 speeds have:
1st 3.513
2nd 2.170
3rd 1.378
4th 1.000
5th 0.875 or 0.825
Rev 3.764

How Strong are they?

1278.jpg 63A Doglog 5-speed

Gearboxes are rated for torque (twisting force). Peak Horsepower is not a factor. It doesn't matter how much horsepower you have; whether you need a stronger transmission depends on how much torque the engine puts out.


Datsun boxes are numbered by the distance between the centres of the countershaft and the main shaft. 56 series 56 mm, 60 series 60 mm, 63 series 63mm.

Approximate guides are 50 % up on the stock engine torque:

  • 56L 4 speeds 105 ft/lbs (Datsun 1200)
  • 56A boxes 120 ft/lb (Datsun B210 & B310)
  • 60 series boxes 135 ft/lb
  • 63 series boxes 175 ft/lb
  • 71B series boxes 240 ft/lb
  • 71C series boxes 300 ft/lb
  • 90A series (FS5R90A), Borg Warner T5 in 1982-1983 280ZX Turbo ~290 ft/lb

Thanks to feral reference: Gearbox Strength

One thing to watch out for in the 60-series is reverse gear. The internal linkage is weak and can bend, making it not shift into reverse properly. Wubbits and I have both run into this problem. See Will a B-210 5-speed fit in a 1200

Gearbox weights

See main article: Gearbox Weights

Gearbox Length

All 56-series and 60-series RWD transmissions are the same length. 4-speeds and 5-speeds are the same length. So they all use the same driveshaft.

FS5W63A and B110/B210 Automatic are slightly different length than 4-speeds. The driveshaft is 15mm longer than a 4-speed driveshaft.

FS5W63A from non-B210 may be different length. Per (ROConnor): "I hav here a 63A#1 dogleg 5-speed, and a 56A 4-speed that both measure 660mm from the mounting face to the end of the output shaft (so may be diferent 63A's?)"

Short tail

Short tail total length: ~26.3"

  • 1977-1979 200SX USA S10 (L-series engine, FS5W63 "smoothcase" dogleg)
  • 1968-1973 PL510 (L-series engine, F4W63 "bottom pan")
  • 720 FS5W71B "ribbed case" used on certain 720 4X4s (long wheelbase?)
    • Z-engined series
    • may have had an L series in 1980 only

Long Tail

Long Tail total length: ~31.5"

F4W63 4-speed

  • 1965- 520/521 from '65 with J and L Engines
  • 1978-1981 HLA10 L and Z Engines
  • 1973-1975 610 L Engine
  • 1974-1977 710 L Engine
  • 7206-7309 620 L Engine

FS5W63 5-speed (dogleg)

  • 1979-1981 HLA10 optional L and Z series

F4W71A 4-speed

  • early 1970-1971 240Z

F4W71B 4-speed

  • 1973-1978 S30 240/260/280Z
  • 7310-1980 620 L Engine
  • 1978 -? 810 L Engine
  • 1980-1986.5 720 L and Z Engines

FS5W71B 5-speed

  • 1977-1979 620 L Engine
  • 1977-1983 280Z and 280ZX L Engine
  • 1978-1984 810/Maxima L Engine
  • 1980-1986.5 720 L and Z Engines
  • 1980-1983 S110 (200SX) Z Engine
  • 1984-1986.5 S110 (200SX) CA Engine


  • 63 series: 1.6-2.0 liter engines
  • 71 series: 2.2 and larger engines

What about my Speedometer?

Well, speedometers are generally off in the first place. But, yes, your speedo may read incorrectly if you change transmissions. On the US 5-speeds, the speedo pinion gear will interchange from the 4-speed, BUT there is one less tooth on the output shaft (5spd). This makes the speedo display faster than the actual vehicle speed.

See main article: Speedometer#Drive_Ratios

What about using a non-Nissan 5-speed?

The Celica/Corolla T50 5-speed has been used successfully by several club members. If you want to spend a little you can also get a conversion kit for a Toyota 5 speed. These boxes are stronger, lighter, more easy to find, yet less expensive than Datsun 5-speeds.

Toyota T50 5-speed

The Toyota T50 overdrive 5-speed is light, strong and readily available. The ratios are closer than the regular Datsun 5-speeds. But you need to adapt it to the A-series engine as it uses a different bellhousing bolt pattern.

For details, see main article: T50 5-speed

1258.jpg Dellow T-50 Swap Kit

Toyota W50 5-speed

Using an A-series automatic transmission bellhousing, make an adapter plate to fit the W50 gearbox.

For details, see main article: W50 5-speed

6900.jpg

5-speed Identification

Casting Mark

The series casting mark is on the right side of the gearboxes.

22342.jpg
60 series has it on the lower right side in front of the center plate

1680.jpg
56 series 5-speed has it right side about center
56 series 4-speed has it forward of here
4658.jpg

22338.jpg
63A has it on the lower right side of the extension housing

1883.jpg

Ribbed-case vs Smooth-case

56-series trannies are small and light, and have these visible ribs on the case and bell section.

1662.jpg 56 four-speed 1675.jpg F5C56 5-speed]

By contrast, 60-series and 63-series are "smooth case" transmission with no ribs on the bellhousing area.

NOTE: There is some rare smooth-case 56-series. It is unknown what these are out of.
19710.jpg 19711.jpg 19712.jpg 19713.jpg

22343.jpg

60 vs 56

945.jpg 56A & 60A comparo (4-speeds) Size; shape comparison.

Pitroad F5C56A trans (b110)


what gearbox is it?
Dog Leg Gear Boxes

1674.jpg F5C56A and F5W60L Comparison

60L vs 60A

The FS5W60L is known in Japan the "low-back 5-speed" and came in the early B310 Sunny, and 1979 model year USA B310.


reference: Iruka, Sunnytruck
1676.jpg
F5W60A and F5W60L Comparison

13616.jpg
60A vs 60L

Identification: 1979 Datsun 210 (B310) 5-speed "FS5W60L"

  • Oil plug out the back is 60L (not pointing down like 60A)
  • H90 part prefix (cast into cluster plate) is unique to this transmission
  • Unique double-gear cluster gear in extension housing is 60L
    13609.jpg
  • 60L in right-and-up position is Direct (4th) per dogleg shifter. Whereas in the 60A this same position is 5th.
  • 60L has no boss sticking out the right side of the back, whereas the 60A has it (up high).


And who_your_datty_1200 pointed out that the #2 casting mark on the back is an indicator of the dogleg shift pattern.

  • 6942.jpg

However this might be gear options or more likely just a casting revision.

63-series 5-speed

Top: 63 'big boy'
13615.jpg
Bottom: 60 series

The 63 transmission came with A14-powered B210 (HB210 and HLB210). It was not used by Nissan Competition for racing. Instead the 56-series was recommended for the small cars, and the 71 for the larger cars.

13612.jpg

The 1977-1978 USA got B210s with factory 5-speed transmissions. Here's an advertisement for one:
1661.jpg MPG Champion - Datsun B210
This is the FS5W63A "dogleg" trans. Note the casting line around the center section on the otherwise smooth housing.
1278.jpg 63A

953.jpg 63A
954.jpg 63A

955.jpg 63A
4649.jpg
63a

63 series L-engine vs A-engine

63 series gearboxes speeds were available for A14 engines and for L-series engines, Z-series engines and J-series engine. So be careful to match the bell pattern and make sure the one you buy fits the A-series.

See 63 series L-engine vs A-engine

4-speed vs 5-speed, 63 Series

17431.jpg If you see the bottom pan, it's a 4-speed

For more information, see: 63-Series_Transmission#4-speed_vs_5-speed

4-speed vs 5-speed, 60 Series

Make sure you don't purchase a 4-speed by accident :-) they are very similar looking.

60L 5-speed

Left side: Almost identical
23637.jpg

Right side: Bulge in tailhousing is larger
23636.jpg

Another look:
22337.jpg


13617.jpg

60A 5-speed

Left side. Top: 60L 4-speed
22339.jpg
Bottom: 60A 5-speed

From the left side, the difference is less obvious. But you can still see the bulge in the extension housing for the 5th gear.

4-speed vs 5-speed, 56 Series

19049.jpg 19048.jpg

The 5-speed:

  • has a reverse light switch on top, pointing straight back
  • top two case bolts are long (2-3" long)

R vs F Comparo

Vanette "Remote" shift transmission could be used for parts to repair an "F" Floor shift 60A.

4650.jpg comparison

Swap Instructions

See:
* Transmission Interchange
* 56-Series Transmission (Datsun 1200 GX5 type)
* 60-Series Transmission (Datsun B310 Sunny/210 type)
* 63-Series Transmission (Datsun B210-A14 type)

List of A-series Transmissions (rear wheel drive)

Discussion about transmission differences: GEARBOX NUMBERING AND BASIC INFO.

B10
* F4W56 Floor-shift 4-speed 56-series
** B10 uses a bell-crank clutch release lever, unlike all other models
B110
* R3W56 3-speed column shift
* F4W56 Floor-shift 4-speed 56-series
* FS5W56 Floor-shift 5-speed 56-series 
  - (direct fifth 1:1, non-overdrive)
B210
* F4W56A Floor-shift 4-speed 56-series (fitted to A12 & A13)
  - Stronger than previous models
* F4W60L Floor-shift 4-speed 60-series (fitted to A14)
* F4W63L JDM Floor-shift 4-speed 63-series for A14
  - Has bottom plate, unlike all others
* FS5W63L Floor-shift 5-speed 63-series
B310
* F4W56A 32100-H7421 for A12 and A13 
* F4W60L (JDM) 32100-H8901 with A14
* F5W60A (1980-1982) 32100-H9700 (A12) or 32100-H9701 (A14/A15)

NOTE: -L and -A do not indicate the engine type the transmission fits (bellhousing pattern). There is an FS5W63A for L16 engines, and an FS5W63A for A14 engines.

Case assembly part numbers:
* 32100-G1030 - F4W56 early B120, R3W56 early B120
* 32100-G1123 - B120 7510- SB
* 32100-G1124 - B120 7510- LB
* 32100-H5030 - F4W56 B210 A12, R3W56 B210 (up to '75-3)
* 32100-H5035 - F4W56 B210 A12 (from '75-3)
* 32100-H1000 - F4W56
* 32100-H6231 - F4W56A USA B210 with A13 -0874
* 32100-H6201 - F4W56A 
  ** replaced 32100-H6200
* 32100-H7421 - F4W56A (B210 and B310 A12 and A13 -8010, and all F4W56A 8011-)
* 32100-H7310 - F4W60L (B210 A14 V)
* 32100-H8901 - F4W60L (B310 A14 -8010 and all F4W60L 8011-8109)
* 32100-H9000 - F5W60L (B310 S, K -7909) 
* 32100-H9700 - F5W60A (B310 A12 7910-) 
* 32100-H9701 - F5W60A (B310 A14 7910- and all F5W60A 8110-)
  ** Same as F4W60L
* 32100-U6700 - FS4W63L (B210 JDM A14)
* 32100-N6700 - FS5W63A (B210 JDM A14)
FSW60A 3rd Gear variation (1.320 versus 1.378)
* 32260-H9700 GEAR ASSY-3RD SPEED
* 32260-H9701 GEAR ASSY-3RD SPEED

Gear Ratios

5-Speed Ratios
GearF5C56A GX5F5C56A Opt.1F5C56A Opt.2???FS5W60LFS5W60A close.3rdFS5W60A wide.3rdFS5W63A
1st3.7573.7572.6763.5133.5133.5133.5133.382
2nd2.3742.3741.6912.1702.1702.1702.1702.013
3rd1.6591.6591.3981.3781.3781.3781.3201.312
4th1.2541.2911.18111111
5th1110.8750.8460.8210.8210.854
Rev4.044.042.8773.7643.4643.7643.7643.57
NoteStock B110 GX-5 & early B210 GX-5wide ratio PN 32010-H7251Pclose ratio PN 32010-H7220N?1979 NA FSM1980 (for A14) 1981-1982 (for A15) NA FSMs1980 (for A15) 1981-1982 (for A14) NA FSMs1978 NA FSM


3 & 4-speed ratio Comparison reference
Gear1971 R3W56F4W5656 Opt.1 gearset56 Opt.2 gearsetF4W60L
1st3.383.7572.8622.1683.513
2nd1.7342.1691.9081.5922.170
3rd11.4041.351.2311.378
4th-1111
Rev3.643.643.643.643.764
Note1971 FSM1971, 1980-1980 FSMF4W56L middle-close ratioF4W56L ultra-close ratio1976, 1978-1982 NA FSMs
Note that the 1974-up F4W56A four-speed is stronger than the B110's F4W56L. The gears are wider, and lubrication system is improved. Countershaft, front main bearing and main shaft bearings are stronger.

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