+{{Transmission_Navbox}}  + 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 and work in a 1200 as-is or with some degree of modification. 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 and work in a 1200 as-is or with some degree of modification. = Why Should I get a 5-speed? = = 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. More relaxed, quieter, more fuel-efficient highway cruising will result. This was Mareo's idea, and I think he might be right.+Adding an overdrive 5-speed is one of the best improvements that can be made to the Datsun 1200. More relaxed, quieter, more fuel-efficient highway cruising will result. This was Mareo's idea, and I think he might be right.  +   +Then there is the performance 5-speed, which does NOT lower RPMs on the highway, does not improve fuel economy. This is the GX5 transmission, it provides an extra gear in-between 1st and Top. These gears allow you to shift more often, keeping the engine in the fattest part of the rev range for quicker acceleration. The only A-series gearbox that is non-overdrive like this is the 56A 5-speed. = Why should I <i>not</i> get a 5-speed? = = Why should I <i>not</i> 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).+On the other hand, if you don't do much highway driving consider that the A12 4-speed is lighter and cost less. It's also better suited to the stock A12 torque curve than any of the overdrive gearboxes. It has a relatively steep 1st gear for effortless take-offs even with 4 passengers, yet still allow a 90 mph top speed, while 80 mph cruising @ 5000 RPM is perfectly do-able if a bit noisy. Remember, the Yellow Line doesn't even start until 6000 RPM on a Datsun 1200. -Also, a 5-speed won't improve your top speed. Datsun 1200 top speed is about 95 mph and is HP limited (not gearing limited). Highest speed is achieved in 4th gear as it needs to run at 6000 RPM to make enough power.+Also, a 5-speed won't improve your top speed. Datsun 1200 top speed is about 95 mph and is HP limited (not gearing limited). Highest speed in the 1200 GX5 is achieved in 4th gear as it needs to run at 6000 RPM to make enough power. = What types of 5-speeds are available? = = What types of 5-speeds are available? = -* [[56-Series Transmission]]+* [[56-Series Transmission]] (non-overdrive) ** small, light, with visible ribs along case similar to B110 4-speed ** small, light, with visible ribs along case similar to B110 4-speed  +** Performance use. Does not lower RPMs or reduce noise at highway speeds ** Suitable for A12 engine. Not strong enough for A14 ** Suitable for A12 engine. Not strong enough for A14 ** The 5-speed versions were 1:1 direct fifth-gear (non-overdrive), called in Japan "direct mission" ** The 5-speed versions were 1:1 direct fifth-gear (non-overdrive), called in Japan "direct mission" = Where can I get one? = = Where can I get one? =  +Buy brand new genuine Nissan FS5W60A 5 Speed Gearbox [http://www.datsun1200.asia/category/select/pid/8883 $1568 Bprojects]  +<br>{{Album|25052}}  + 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 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). * Clutch disc for 63-series transmission. All other 5-speeds use the same clutch as stock Datsun 1200 * Clutch disc for 63-series transmission. All other 5-speeds use the same clutch as stock Datsun 1200 * 1200 Automatic [[Propeller_Shaft_Swaps|Propeller Shaft]] fits the 63-series gearbox. All other 5-speeds use the same driveshaft as the stock 1200 4-speed * 1200 Automatic [[Propeller_Shaft_Swaps|Propeller Shaft]] fits the 63-series gearbox. All other 5-speeds use the same driveshaft as the stock 1200 4-speed -  = Shift Patterns = = Shift Patterns = Most of the 5-speeds use a "[[dogleg]]" shift-pattern (aka 'reverse shift'). Most of the 5-speeds use a "[[dogleg]]" shift-pattern (aka 'reverse shift'). -<table><tr><td width=100><blockquote><table><tr><td width=100><table><tr><td>R-</td><td>2&nbsp;</td><td>4</td></tr><tr><td>&nbsp;1</td><td>3</td><td>5</td></tr></table></td><td>&nbsp;&nbsp;</td><td>http://datsun1200.com/uploads/thumbs/10121.jpg</td></tr></table></blockquote></td><td></td></tr></table>  -ONLY the 60A 5-speed is a non-dogleg. It was used starting with 2nd-year B310, from late 1979.+<div style="floatx:right;margin: 0 0 0 0px; width:256px;">  +<blockquote><table><tr><td width=100><table><tr><td>R-</td><td>2&nbsp;</td><td>4</td></tr><tr><td>&nbsp;1</td><td>3</td><td>5</td></tr></table></td><td>&nbsp;&nbsp;</td><td>http://datsun1200.com/uploads/thumbs/10121.jpg</td></tr></table></blockquote>  +</div> Dogleg Dogleg * FS5W63A * FS5W63A * FS5W60L * FS5W60L  +  +ONLY the 60A 5-speed is a non-dogleg. It was used starting with 2nd-year B310, from late 1979. Non-dogleg: Non-dogleg: * FS5W60A * FS5W60A -Standard pattern (aka 'straight shift')<table><tr><td width=100><blockquote><table><tr><td width=100><table><tr><td>1</td><td>3</td><td>5</td></tr><tr><td>2</td><td>4</td><td>R</td></tr></table></td><td>&nbsp;&nbsp;</td><td>[http://datsun1200.com/modules/myalbum/photo.php?lid=23138 http://datsun1200.com/modules/myalbum/photos/thumbs/23138.jpg]</td></tr></table></blockquote></td><td></td></tr></table>+Standard pattern (aka 'straight shift')<div style="floatx:right;margin: 0 0 0 0px; width:256px;">  +<blockquote><table><tr><td width=100><table><tr><td>1</td><td>3</td><td>5</td></tr><tr><td>2</td><td>4</td><td>R</td></tr></table></td><td>&nbsp;&nbsp;</td><td>[http://datsun1200.com/modules/myalbum/photo.php?lid=23138 http://datsun1200.com/modules/myalbum/photos/thumbs/23138.jpg]</td></tr></table></blockquote></div> = Are there any close-ratio or non-overdrive 5-speeds? = = Are there any close-ratio or non-overdrive 5-speeds? = = 5-speed Identification = = 5-speed Identification =