Exhaust Manifold
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Datsun 1200 uses a single-outlet cast-iron exhaust manifold. It has a two-bolt flange to the Exhaust Piping. The manifold can be replaced with a tubular header (extractor).
Overview
The standard Datsun 1200 exhaust manifold features a Heat Riser to deflect hot exhaust towards the bottom of the intake manifold. Since it bolts to the intake, it requires a matching Intake Manifold.
Main: Heat Riser
GX exmani for Datsun 1200 is a divorced type -- not connected to the intake manifold
Divorced type is used with a water-heated Intake Manifold.
Heating the intake plenum is important for part-throttle performance/driveability and fuel-economy. For more information, see Heat Riser.
Gasket
Dual-outlet exhaust manifolds (Twin Carb engines + A15E) used a flat packing (gasket).
A12 and A14 made from 1990- used a different manifold that used a flat packing (A12 with 3-bolt flange). See #95W Late 1200.
http://datsun1200.com/uploads/photos/31353.jpg http://datsun1200.com/uploads/photos/31352.jpg
For all other single-outlet exhaust manifolds, there is no packing (gasket) between exhaust manifold and exhaust pipe. Instead the pipe has a flaring that seals it.
http://datsun1200.com/uploads/photos/31096.jpg
If the original exhaust pipe is not available, an aftermarket donut gasket can be fitted to plain 1.5 inch exhaust pipe. This is a donut seal (compression type) such as used by MGs and Austins and 1960s American cars. It is made of an asbestos-like material.
http://datsun1200.com/uploads/photos/31095.jpg
Alternatively, an exhaust shop can weld a flange to the exhaust pipe and a flat gasket can be used.
Single Outlet
Early A12s used a two-bolt exhaust pipe flange. A14/A15 and late A12 have three-bolt exhaust pipe flange.
2-Bolt Outlet
Datsun 1200
B110 manifold has heat riser for bottom of intake manifold.
- 3-bolt stove gasket
- Datsun 1000 manifold is similar, but with a smaller 30mm outlet. A12 engine has 34mm outlet. Also the exhaust pipe joint is reshaped for performance increase.
B110 | B10
14004-H1030 MANIFOLD-EXHAUST 1 A12 CRANK -273 USA,JDM NLA 
14004-H1930 MANIFOLD-EXHAUST 1 A12 EXHAUST USA - superceded 14004-H3950 MANIFOLD-EXHAUST 1 A12 0671 USA - superceded 14004-H3930 MANIFOLD-EXHAUST 1 A12 -273 USA 14004-H3950 superceded 14004-H3931 MANIFOLD-EXHAUST 1 A12 0373- USA 14004-H3930 $203.14 
14004-H1031 MANIFOLD-exhaust, with heat control (from '73-3) JDM, also B120 -7908 08213-82810 STUD (fixing manifold to exhaust tube and cylinder head) (11) 14064-H5001 STUD B120 7510-8910 14005-18000 GASKET (fixing intake manifold to to exhaust manifold)
08213-82810 STUD FIXING EXHAUST MANIFOLD TO EXHAUST 2 14005-18001 GASKET-INTAKE TO EXHAUT MANIFOLD 14005-18000 14005-18000 GASKET-INTAKE TO EXHAUT MANIFOLD 08110-63210 BOLT INTAKE TO EXHAUT MANIFOLD 2 01111-00032 BOLT 08915-13610 WASHER-LOCK INTAKE TO EXHAUT MANIFOLD 3 08911-10810 NUT CYLINDER HEAD TO MANIFOLD 9 08915-13810 WASHER-LOCK 5 14037-32200 YOKE-MANIFOLD 4 14035-K7700 GASKET-MANIFOLD TO CYLINDER HEAD 14035-18000 14035-18000 GASKET-MANIFOLD TO CYLINDER HEAD 14022-18000 SPRING-HEAT CONTROL THERMS 14025-85061 KEY-HEAT CONTROL VALVE 14026-18001 WEIGHT-COUNTER VALVE 14027-36700 WASHER-HEAT CONTROL 14047-36700 SPRING-STOPPER HEAT CONTROL
The optional clamp-on heated-air cleaner duct (later manifolds used a bolt-on heated air duct):
http://datsun1200.com/uploads/photos/31092.jpg http://datsun1200.com/uploads/photos/31091.jpg http://datsun1200.com/uploads/photos/31093.jpg
Exhaust manifold modified for use with extractors: * heat riser block plate
http://datsun1200.com/uploads/photos/31088.jpg http://datsun1200.com/uploads/photos/31089.jpg http://datsun1200.com/uploads/photos/31090.jpg
Datsun 1000
Heat Riser flap was used starting in mid-1967. B10 manifold look like the 1200 manifold, but the heat riser area is smooth, without the two vertical standups of the 1200 exmani.
1000 Coupe used a dual-outlet exhaust manifold (see #Double-Outlet section below)
14000-18000 ASS'Y-MANIFOLD, intake & exhaust (up to E/# A10-200838) 14000-25700 ASS'Y-MANIFOLD, intake & exhaust Coupe 14003-18000 MANIFOLD-intake 14003-18001 MANIFOLD-intake (from E/# A10-200839) (exc. Coupe) 14005-18000 GASKET (fixing intake manifold to to exhaust manifold) 14004-18000 MANIFOLD-exhaust 14004-18050 ASS'Y-MANIFOLD, exhaust [has heat riser flap] * 82-16828 STUD (fixing manifold to exhaust tube) 2 * 82-13828 STUD (fixing manifold to exhaust tube) 2 (from E/# A10-59060) 14004-25700 MANIFOLD-exhaust Coupe * 82-16822 STUD (fixing manifold to exhaust tube) 3 Coupe 14035-18000 GASKET-manifold to cylinder head
B210 JDM
14064-H5000 STUD (2) 14064-H5001 STUD (from '74-1) (2) 14004-H1031 MANIFOLD-exhaust [same as 1973 B110] A12 1974/1975 & A12 Van 14005-18000 GASKET-INT to EXT manifold 14004-H7431 MANIFOLD-EXHAUST A14S Van
14004-H8231 MANIFOLD-EXHAUST A12,A14S Coupe,Sedan 14097-U9500 GASKET-STOVE 14064-U6700 STUD-EXHAUST TUBE (3)
1974 A13
Larger passages EGR port 4-bolt square heat riser (stove) gasket 14004-H6230 MANIFOLD-EXHAUST 14004-H6232 MANIFOLD-EXHAUST code-5
Mid B120
B120 7907-8910 2-bolt outlet, similar to the old B10 manifold.
http://datsun1200.com/uploads/photos/31097.jpg
14064-H5001 STUD (2) 14004-G2536 MANIFOLD-EXHAUST 7908-8109 14005-18000 GASKET-INTAKE TO EXHAUST MANIFOLD 7908-8109 14004-G2561 MANIFOLD-EXHAUST 8110-8910 14005-G2560 GASKET-INTAKE TO EXHAUST MANIFOLD 8110-8910
B140
B140 bakkie with A14 engine
G1099 exhaust manifold and GT000 intake manifold
http://datsun1200.com/uploads/photos/31365.jpg
H74
* heat riser, 4-bolt * 2-bolt outlet MANIFOLD-EXHAUST 14004-H7431 B210 JDM A14S Van 14004-H7431 B310 JDM A14S.Van -7909 14004-H7432 C120 A14 1078-0679 > 14004-H7431
3-bolt Single Outlet
When swapping from a 2-bolt outlet to 3-bolt outlet you will also need a new exhaust pipe flange.
HEAT-RISER TYPE (bolts to inlet manifold) H72, H74, H82, H95, H99, G25
DIVORCED TYPE (does not bolt to inlet manifold) * #H89 #H84 #H85 plain manifold * #H92 Adds EGR tube on front * #H86 #A12A_USA Adds EAI ports on runners #1 and #4 * #A15 (C22) Adds provision for O2 sensor * #95W_Late_1200 plain manifold with 02 Sensor * #LDV plain manifold 4-into-1 style
95W Late 1200
A12 late style (8910-) 3-bolt with O2 sensor with heat shield. Uses an actual gasket.
14004-95W00 MANIFOLD-EXHAUST SB B120 14004-95W01 MANIFOLD-EXHAUST LB B120 14064-11M00 STUD (3)
https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/95Wb.jpg
https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/95Wa.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/95Wc.jpg
16590-G5100 COVER-MANIFOLD * Heat shield with hot-air tube connector and cutout for the Oxygen sensor 
A14 USA
1975 A14 14004-H7230 MANIFOLD-EXHAUST -0775 B210 USA 14064-U6700 STUD FIXING EXHAUST MANIFOLDTO EXHAUST (3) New heat riser (stove) design borrowed from 610/620/710 larger exhaust ports (?) heat shield added 3 stud outlet
14097-U9500 GASKET-STOVE 0476- superceded 14097-U6701
1976-1978
14004-H7330 MANIFOLD-EXHAUST A14(USA) 0875-0776 14004-H7235 MANIFOLD-EXHAUST A14(USA) 0876-
14004-H7330 MANIFOLD-EXHAUST A14(CAN) 0875-0777 14004-H7235 MANIFOLD-EXHAUST A14(CAN) 0877-
14004-H7239 MANIFOLD-EXHAUST A14(FED)(GFU) 1276- B210
14004-H7239
B310 FED KFU 14004-H7239 MANIFOLD-EXHAUST A14 FED(KFU) -0779 14004-H9900 MANIFOLD-EXHAUST A14 FED(KFU) 0879- 14097-U9500 GASKET-STOVE 14064-U6700 STUD-EXHAUST TUBE FIXING (3)
B310 except FED KFU 14004-H7235 MANIFOLD-EXHAUST A14/A15 -0779 14004-H7235 MANIFOLD-EXHAUST A14 CAN 0879-0780 14004-H99O0 MANIFOLD-EXHAUST A14,A15 FED 0879-0780 14004-H9910 MANIFOLD-EXHAUST A14,A15 CAL 0879-0780 14004-H9501 MANIFOLD-EXHAUST A14,A15 USA 0880- 14097-U9500 GASKET-STOVE 14064-U6700 STUD-EXHAUST TUBE FIXING (3)
A12A Canada
with heat riser 14004-H7239 MANIFOLD-EXHAUST A12A B310 CAN 14064-U6700 STUD FIXING EXHAUST MANIFOLDTO EXHAUST (3) 14097-U9500 GASKET-STOVE
A12A USA
without heat riser 14004-H9900 MANIFOLD-EXHAUST A12A B310 FED 0879-0780 14004-H9910 MANIFOLD-EXHAUST A12A B310 CAL 0879-0780 14004-H9501 MANIFOLD-EXHAUST A12A B310 USA 0880-
14064-U6700 STUD-EXHAUST TUBE FIX (3)
H95 with air injection tubes
B210 JDM
without heat riser 14004-H7431 MANIFOLD-EXHAUST A14S.V B210 14064-U6700 STUD-EXHAUST TUBE (3)
with heat riser 14004-H8231 MANIFOLD-EXHAUST A14S,A12S Coupe,Sedan B210 14064-U6700 STUD-EXHAUST TUBE (3) 14097-U9500 GASKET-STOVE https://img.photobucket.com/albums/ff245/chrislyons8/A14IntakeExhaust.jpg
B310 JDM
14064-U6700 STUD-EXHAUST TUBE (3)
without heat riser 14004-H8501 MANIFOLD-EXHAUST A12S, A14S S,K+AT -8010 B310 14004-H8660 MANIFOLD-EXHAUST A13S, A15S 8011- B310
with 4-bolt heat riser 14004-H7431 MANIFOLD-EXHAUST A14S.V -7909 B310
with 3-bolt heat riser 14004-G2536 MANIFOLD-EXHAUST VAN 7910-
H84
H84 A14T twin-carb manifold without heat riser, 5-boss
14004-H8400 MANIFOLD-EXHAUST
H86
H89-style but with added Air Injection ports on front and rear runners
14001-H8660 JPN B310 A13s,A15S
https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/A13exmani1.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/A13exman21.jpg
H89
H89 A14/A15 manifold without heat riser
This is probably 14004-H8501 MANIFOLD-EXHAUST A12S, A14S S,K+AT -8010 B310 14004-H8660 MANIFOLD-EXHAUST A13S, A15S 8011- B310
A15
A15 Late without heat riser, with EGR port, with undrilled O2 boss, and additional undrilled boss to rear of Port 4
C22 Vanette A15
https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/a15_C22-EX-a.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/a15_C22-EX-b.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/a15_C22-EX-c.jpg
H92
14004-H9200 MANIFOLD-EXHAUST A14E
14004-H9260 Exhaust Manifold A15E dual-outlet (cast 'H926')
LDV
Late 1400 LDV "bakkie" manifold appears to be a 1-into-4 design
Dual Outlet
Shorty Headers
"Shorty" tubular headers which are a direct replacement for the cast iron version
Main: Headers#Shorty_Headers
https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/shorty-1.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/shorty-2.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/shorty-3.jpg
Datsun 1000 Coupe
KB10 used a dual-outlet manifold with(?) a standard heat riser to keep the bottom of the intake manifold warm.
14000-25700 ASS'Y-MANIFOLD, intake & exhaust Coupe 14003-18000 MANIFOLD-intake (same as early non-Coupe) 14004-25700 MANIFOLD-exhaust Coupe 14005-18000 GASKET (fixing intake manifold to to exhaust manifold) 82-16822 STUD (fixing manifold to exhaust tube) (3) Coupe
A12 GX
A12GX Engine used a dual-outlet manifold that is not connected to the twin-carb intake manifold (has no heat riser).
14004-H2300 MANIFOLD-exhaust 08213-82800 STUD-fixing exhaust tube 3
NOTES:
- Nissan Cherry A12T exhaust manifold is similar, but it is single outlet
- The Datsun 1000 Coupe exhaust manifold is similar with single outlet.
Only the GX has the full-tilt exhaust system. However, in 1980 this was bested by the A15E exhaust.
Compared to Extractors
Word has it that the GX exmaniᴵ works as good as common extractors (headers), though not as good as the best tuned-length extractors. The factory 1200/B110 Competition Tune-up manual recommends the GX manifold for Rally competition use, instead of extractors.
NOTE: Many Datsun 1200 extractors may not clear the GX inlet manifold.
A15E Manifold
14004-H9260 MANIFOLD-EXHAUST A15E 20711-H9200 GASKET-EXHAUST
Vanette
14004-H7432 C120 A14 1078-0679 oval port, heat riser > 14004-H7431 14004-G2556ᴳ C120 A14 0779-0581 round port, heat riser > 14004-G2536 14004-G5200ᴳ GC22 A15S 0986-
with Oxygen Sensor
https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/A15_vanette_nz.jpg
Forklift Manifold
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