![[Datsun 1200 encyclopedia]](/wiki/upload/wiki.png)
The Nissan L-series engine (as in the 1600/510) is a good swap. Inexpensive, readily available both in USA and Australia, and these are a larger engine family than the Nissan A Engine. From L13 to L18, they are nearly identical on the outside. The L20B 2-liter engine is a tall-block variation but can still will fit under the hood and without cutting the sheetmetal. The Z-series Engine is closely related but has a crossflow cylinder head for better all-around torque and fuel economy.
Contents |
Overview
unfamilia: L series should have been standard in the 1200's ... [L16-powered 1200 is] a nice streetable torqey little car.easier to drive than a high rev a series thats for sure.
Discussions
And for L-engine questions unrelated to Datsun 1200s specifically:
Slant
L-series engine has a 12-degree slant to the right.
Deck Height
L20B is 15 mm taller than the L13/L14/L16/L18.
Block deck height (crank centerline to top of block face) 207.85 mm: L13, L14, L16, L18, L24, L28 227.45 mm: L20B, Z20, Z22, L28D
Engines
From L13 to L20B, you have many choices. The larger engines make more power. An L20B makes more power than an L18, similarly outfitted (stock vs stock, or modded vs modded). Rod/stroke ratio don't matter except in theory, because 200 more CCs trumps it. But there seems to be no reason to use an L13 or L14, as the A15 makes about the same power and is lighter and fits easier. So choose an L18 or L20B, depending on availability. Use an L16 if it is handy or free.
DISPLACEMENTS L13 1296cc L14 1428cc L16 1595cc L18 1770cc L20 (1965) 1998cc L23 (1968) 2262cc L20B (1973) 1952cc LD20 1952cc L24 2393cc L26 2565cc L28 2753cc LD28 2792cc
L13: early Datsun 510 Standard models came with L13. Don't bother to swap this, an A14 is better.
L14: Nissan put the L14 in the Japan-only PB110.
However, why bother these days? Nissan didn't have an A14 in 1970, but we do now, and it is much less work to fit, and weighs a lot less.
L16: A bit more power than an A14/A15 (96 hp vs 80 hp), the L16 is good choice if you obtain one inexpensively.
L18 is a big power boost over an A15 (105 hp vs 80hp)
L20B fitted (92 hp to 110 hp, but with loads of low-RPM hp):
LZ Engine: A super-rare racing engine was the LZ20 twin-cam, fitted to 1200 racing cars.
See main article: [LZ engine]]
LZ20 DOHC engine
L18
L18 is a bored-out L16 right from the factory. Uses the short-deck block of L16, so is slightly less tall than the L20B. Shorter rods mean the engine rings will last longer than tall-deck L20B -- when run at high rpms.
Sources WORLDWIDE 1973-1977 Datsun 610 "180B" USA & CANADA 1973-1974 Datsun 610 North America 1974 Datsun 620 North America 1974 Datsun 710 North America JAPAN 1980-1981 Datsun 720 Japan EUROPE 1980s Datsun 910 Europe * L18S single carburetor * L18T twin carburetor others
L20
There are three 2-liter L-series engines, all very different from each other:
- L20 - Straight six 1966 Cedric engine, 1st L-series engine
- L20A - Straight six based on the L16 (2nd gen design)
- L20B - Inline four cylinder
See http://zhome.com/History/LSeries/LSeriesR1.htm
L20B Sources
Australia Datsun 810 (200B) Datsun/Nissan 910 Bluebird
USA L20B engines came in these models:
- Datsun 620: 1975-1979 model year
- Datsun 720: 1980 only
- Datsun 510: 1978-1979
- Datsun 610: 1974-1976
- Datsun 710: 1975-1977
- Datsun 200SX: 1977-1979 (1977 U67 square port ex. head, 1978-1979 W58 round port ex. head)
USA 1975-1979 Datsun 620 pickup 1977-1979 Datsun 200SX (S10) 1980 Datsun 720 pickup 1975-1976 Datsun 610 1975-1977 Datsun 710 1978-1979 Datsun 510 (A10)
Engine Major Parts
See L-series Engine Components
Crossmember
L-series engine can use the stock B110 L-series crossmember or a A-series crossmember modified.
Or, use the unmodified A-series crossmember with custom engine-side brackets.
See main article: L/Z/KA/SR Crossmember
Engine Sump
Z-series and L-series (including early LD diesel) share the oil pan design:
- 11121-A3500 GASKET-OIL PAN L-series, Z-series
Factory PB110 L-series engine sump is a mid-sump design:
- 11110-H2500 PAN ASS'Y-oil (4 liter)
-
PL620 L16 sump has slightly larger mid-sump than L521. Sump is farther forward, perhaps 1".
L20B-powered 910 Bluebird sump and oil pick up to allow motor to sit as low as possible.
Stanza (A10) and 200B sumps are also front sumps but are slightly larger than the bluebird ones so the engine cant be sat as low
Datsun 1600 and Datsun 180B (610) sump is slightly more rearward Sumps and pickups can be interchanged, but the blocks may need to be drilled for the dipstick.
Vanette winged sump fits unmodified 1200 crossmember.
Plenty of room for adding custom wings to a standard sump too (although it is unnecesary and will require more oil each change):
Oil pan
910 11110-W3410 LD20# -8802 [front sump] 11110-W1700 LD20 8802- [rounded front sump] <> 11110-W1701 <> 11110-W1750 * uses 11121-05E00 GASKET-OIL PAN 11110-W2100 L16S.V 7910-8112 [mid sump] <> 11110-W2101 11110-W3400 LD20T <> 11110-W3401 11110-W1100 Z16S/Z18S/Z18E/Z18P/Z20S/Z20E [front sump] <> 11110-W1101 <> 11110-W1150 11110-W1102 Z18P <> 11110-W1103 11110-W1500 Z18ET <> 11110-W1501 <> 11110-W1550
11110-W1701, 11110-W1750 LD new style * 910 LD20 -8802 * C120 LD20 8106- * R30 LD20 * C31 8011-
11110-W3400 <> 11110-W3401 LD20T * 910 * E23 * C120
11110-W1100 <> 11110-W1101 <> 11110-W1150 Z-series * 910 * C31 * R30 * S110
11110-W1500 Z18ET <> 11110-W1501 <> 11110-W1550 Z18ET * 910 * S110
11110-U8000 A10 L16 JAPAN A10 L20B USA S110 EUROPE 810 L16/L18 JAPAN
11110-W2100 910 L16 JAPAN 910 L16/L18T/L18S EUROPE
720 USA L20B * 4WD 11110-44W00 <> 11110-44W01 * 2WD 11110-B5501, 11110-B5502 <> 11110-B5503
11110-W1700 LD20 * 910,C120 JPN/EUR * R30,C31 JAPAN
Transmission
63-series transmissions for L-Engine fit quite snuggly in the standard Datsun 1200 manual tunnel.
NOTE: Transmissions for Z engine and L engine bolt to either engine but the L engine is slanted oppositely , so it affects the angle the shifter comes out. Not recommended.
engine tilt
Note the CA Engines have a different bell pattern so their gearboxes do not fit the L Engine.
Stubby
Using a stubby transmission will line up with the stock shifter hole. It is about 5 or 6 inches shorter than the more common L-engine transmissions. These are also called shorty, stumpy, or short-tailed. Also a factory driveshaft can be used.
Stubby is ~26.3 inches -- same length as the automatic transmission
4-speed stubby gearboxes are common:
- 1968-1973 Datsun 510 F4W63 "bottom pan"
- 1969-1972 Datsun PL521 "1600"
- 1972-1973 Datsun P620 "1600"
5-speed stubby gearboxes comes from:
- 1981-1985 R30 Skyline with L24 six-cylinder engine
- 1977-1979 USA S10 "200SX" (L-series engine, FS5W63 "smoothcase" dogleg)
- 1977-1978 A10 Stanza
- 1979-1986 910 Bluebird Australia-assembled
- S110 EUROPE with L18
- 720 FS5W71B "ribbed case" used on certain 720 4X4s (long wheelbase?)
- Z-engined series - swap front case needed
- may have had an L series in 1980 only
See main article: Stumpy
Comparo
- Regular
- ~31.5 inches overall transmission length
- transmission extension housing about same length as (front) transmission case
- From the bottom front of the bell housing to the cross member bolts is ~21-1/2"
- Stubby
- ~26.3 inches overall transmission length
- transmission extension housing about 5" shorter than transmission case
1977-1977 S10 "200SX" 5-speed FS5W63A for L20B engine 32010-N5910 TRANSMISSION ASSEMBLY 5-SPEED,USA [No neutral switch?] 32010-N5901 TRANSMISSION ASSEMBLY 5-SPEED,CAN -0777 [has Neutral Switch] 32010-W6600 TRANSMISSION ASSEMBLY 5-SPEED,CAN 0877- [No neutral switch or top switch?] 32101-N6800 CASE-TRANSMISSION <> 32101-N6810 32130-N6809 EXTENSION ASSY-REAR
A10 1978 [L20B -0679] FS5W63A * Coupe Only * 32010-W6700 TRANSMISSION ASSY USA * 32010-W6702 TRANSMISSION ASSY CAN * 32101-N6800 CASE TRANSMISSION <> 32101-N6810 * 32130-N9009 EXTENSION ASSY-REAR CAN [no neutral switch or top switch?] * 32130-N6809 EXTENSION ASSY-REAR USA
A10 1979 [Z20S] FS5W63A * 32101-W0411 CASE TRANSMISSION 0779- * 32010-W6700 TRANSMISSION ASSY USA * HLA10RFU 2-dr sedan FED * HLA10RFV 2-dr sedan CAL * FHLA10FU 4-dr hatchback FED * FHLA10FV 4-dr hatchback CAL * WHLA10FU Wagon FED * WHLA10FV Wagon CAL * CAN -0679 * 32010-W6702 TRANSMISSION ASSY CAN A10 1980-1981 [Z20S] FS5W63A 32010-W8900 TRANSMISSION ASSY USA * FHLA10FU 4-dr hatchback FED * FHLA10FV 4-dr hatchback CAL
EL
720 L18 F4W71B 32010-G7300 TRANSMISSION ASSY
910 L16S F4W63L
910 L18S FS5W71B, F4W63L?
910 L18T FS5W71B, F4W63L?
910 LD20 FS5W71B, F4W63L?
S110 L18E 32010-N8900 TRANSMISSION ASSY FS5W63A
32101-N6810 CASE-TRANSMISSION
32130-R5600 EXTENSION ASSY-REAR <> 32130-R5609
Long Transmissions
Or use a standard L-engine transmission. The only bit of cutting wil be 1/2 of the gearstick hole but that can be welded that back in the other side to make the factory rubber shifter gasket fit back in. You can see it here:
-
- Comparo: Stubby vs Regular transmission
- Notice the shifter location (top part of picture)
Photo Gallery: L Engine transmission comparison photos at Ratsun.net
- Reverse lamp switch -- depending on the gearbox model used -- may not fit. See Reverse Lamp Switch#Custom
- Rear crossmember (gearbox xmember) may not line up with transmission mount -- depending on the gearbox model used.
5-speeds
Bolt-ins (require rear mount mods) * 1981-1985 R30 Skyline with L24 * 1977-1979 S10 "200SX" dogleg (rally shift pattern)
Custom driveshaft & shifter hole enlargement * 610 * 710 * 1977-1978 620 * 1980 720 * S30 early 1969-1971 FS5C71A * S30 (240Z, 260Z,280Z) * S130 280ZX
Modded - requires swapping front case * Z-series engine gearboxes * S13/S14/S15 gearboxes
Rear Crossmember
Rear crossmember (Transmission Mount)
Depending on which gearbox you use, the xmember may need a bit of spacing to provide clearance.
L20B Swap Notes
The L20B is a 2-liter four cylinder engine. Not to be confused with the 2-liter six cylinder L20. The L20B is about 19mm taller than other L-series fours.
- no holes cut
- just panel beat the lower corners of the front of the tunnel with a hammer, as the L series is wider
- modify the engine mounts on the crossmember
- 1200 crossmember had the mounts trimmed to an angle simular to that of an 810, then cut the 810 mounts in 1/2 to finish the job and locate the motor lower and improve the mounting angles.
- 810 oil sump is a near-perfect fit in the 1200, reshape it a little just so it will clear the crossmember, maybe 5 mm with a hammer
- Or use 5mm spacers between crossmember and body
- The bonnet will close over sidedraft carburetors (inluding twin Hitachi carburetors)
- The bonnet will close over downdraft carburetor if the engine is low enough. It is a tight fit. Use a low-profile carb insulator/spacer.
- fitting the radiator in isn't a problem. you'll need a thermostat-controlled fan in front of the radiator (i.e. on the grill side)
Swap Notes
Engine Fitment
Engine fitment: It is a tight fit
Method 1: Lower car over engine
- Remove front and rear crossmembers
- Lift car over engine and gearbox
- Replace crossmembers
-
Method 2: put engine and transmission in separately. First put in the transmission, then the engine. If the transmission is removed/installed, remove the radiator and slide the engine forward to gain enough room for the gearbox fitting.
Method 3: If you have the larger Auto tunnel, finagle it. With an L16/L18, it only need the lip of the radiator core support bent slightly out of the way.
photo 
photo 
photo 
photo 
Method 4: Cut the radiator core support
Tunnel Clearance
Clearance the 1200 manual tunnel:
Or use the larger 1200 Automatic Tunnel, or B210/610/A10 tunnel.
Oil Filter
Use filter housing from Bluebird or maybe 710, so the filter doesn't interfere with the crossmember.
Or use a remote filter adapter:
Exhaust
Datsun 510 (1600) headers reportedly fit well in a 1200.
Other
When using a 63-series 5-speed, you can use Datsun 1200 Automatic tailshaft.
Use an electric fan, as there usually is not enough room for standard engine-driven fan.
New struts are not required. The L Engine is not that much heavier than a 1200, so you can modify slightly heavier springs to fit the Datsun 1200 struts. Or just let the extra weight lower your 1200 a bit.
If you plan to drive faster, and so want to fit bigger brakes, see Brake Upgrades.
The L-series uses the same Temperature Sender as A-series, so it works with the stock 1200 gauges.
Diff
With the extra torque of an L16, L18 or L20B, you will want to fit a larger diff. Nissan put the H165 into the L14-powered PB110.
An A10 (Stanza/510) auto or manual driveshaft may fit with H165 diff.
Aussie: Fit 120Y sedan Borg Warner diff and automatic tailshaft. The BW68 diff will handle an L-series engine.
Photo Index
