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Revision as of 08:14, 16 December 2012

Datsun 1200 GX used a matched pair of 38mm sidedrafts, referred to as front and rear carburetors. These are similar to S.U. brand carburetors. For more general information see Hitachi Twin Carb.

1 Variations
2 Part Names
3 Parts Breakdown
4 Carburetor Linkage
5 Maintenance Parts
6 Comparison
7 Photo Index

Variations

Three variations were used in the 1970-1972 B110 JDM GX model run. All are dome-tops:

Original
- 16010-H2332 CARBURETOR ASS'Y-twin, front
- 16010-H2333 CARBURETOR ASS'Y-twin, rear
November 1971
- 16010-H2334 CARBURETOR ASS'Y-twin, front (from '71-11)
- 16010-H2335 CARBURETOR ASS'Y-twin, rear (from '71-11)
January 1973
- 16010-H2336 CARBURETOR ASS'Y-twin, front (from '73-1)
- 16010-H2337 CARBURETOR ASS'Y-twin, rear (from '73-1)

Part Names

Parts Breakdown

click for full-size pic

1 16122-H2310 SHAFT ASS'Y-throttle
2 16324-H2310 FILTER ASS'Y-piston
3 16144-H2310 NUT ASS'Y-idle adjusting
16144-H2311 NUT ASS'Y-idle adjusting (from '71-11)
4 16145-H2310 SPRING-idle adjusting screw 2
5 16355-H2310 NOZZLE ASS'Y
16355-H2310 NOZZLE ASS'Y (from '71-11)
(6) 16127-H2310 PLATE ASS'Y-throttle adjusting, front
6 16127-H2311 PLATE ASS'Y-throttle adjusting, rear
(7) 16277-H2312 LEVER ASS'Y-first idle, front
7 16277-H2313 LEVER ASS'Y-first idle, rear
16277-H2315 LEVER ASS'Y-first idle, rear (from '71-11)
16134-H2310 LEVER ASS'Y-throttle, front
8 16134-H2313 LEVER ASS'Y-throttle, rear
9 16083-58000 SLEEVE 2
10 16214-25610 NUT (8 radius) 2
11 16116-H2310 SLEEVE 2
12 16190-10401 SPRING-starter, return (B)
12 16190-74310 SPRING-starter, return (A)
13 16147-14611 PLATE-cam (B)
13 16147-74311 PLATE-cam (A)
14 16116-14610 SLEEVE (B)
15 16157-14610 SPRING-connecting (B)
15 16157-74310 SPRING-connecting (A)
16 16238-H2310 LEVER ASS'Y-choke, front
16 16238-H2311 LEVER ASS'Y-choke, rear
17 16147-H2310 PLATE-connection, front
17 16147-H2311 PLATE-connection, rear
18 16227-H2300 ADAPTER-front
18 16227-H2311 ADAPTER-rear
19 16322-E3210 BOLT (8Ø) (2)
20 16356-25610 PIPE-rubber, fuel (2)
21 16358-E4310 CLIP-fuel pipe (4)
22 16061-K1407 Float $13 USD
- superceded 16061-10400 FLOAT
23 16101-H1000 VALVE ASS'Y-needle
16101-18010 VALVE ASS'Y-needle (from '71-11)
24 16062-10400 LEVER-float (up to '71-10) (2)
from '71-11
- 16062-H2310 LEVER-float, front (from '71-11) (1)
- 16062-H2710 LEVER-float, rear (from '71-11) (1)
25 16066-25610 SHAFT-float
26 16331-10400 SCREW-nipple set
27 16098-25710 FILTER
28 16554-H2310 JET-needle
28 16554-H2316 JET-needle (from '71-11)
29 16031-A8710 PLUG-drain
30 16148-H2310 CLAMP-choke, front
30 16149-H2310 CLAMP-choke, rear
16149-H2311 CLAMP-choke, rear (from '71-11)
31 16346-10615 SPRING-suction
32 16341-25610 NUT ASS'Y-oil cap
33 16194-H2310 SPRING-throttle
16194-H2311 SPRING-throttle (from '71-11)
16194-H2312 SPRING-throttle (from '73-1)

Piston with Needle Jet and needle set-screw

Carburetor Linkage

1 08915-43810 WASHER-plain (4) [fixing carburetor to manifold]
2 08915-13810 WASHER-lock (4) [fixing carburetor to manifold]
3 08911-20810 NUT (4) [fixing carburetor to manifold]
4 16361-H2300 SHAFT ASS'Y-throttle
5 16376-H2300 BRACKET-accelerator cable
6 08915-13510 WASHER-lock,fixing accelerator cable bracket 2
7 08460-51000 SCREW-fixing accelerator cable bracket 2
8 16031-H2300 TUBE-over flow, front
9 16031-H2301 TUBE-over flow, rear
- 16031-15801 TUBE-over flow, (Vinyl 6 x 9 x 160) 2
10 14012-H2300 BRACKET-over flow tube
10 14012-H2330 BRACKET-over flow tube (from '72-5)

Maintenance Parts

GASKET SET

Nissan part numbers

16455-H2310 GASKET SET
- A 16335-14610 PACKING (10Ø) (4) [for inlet banjo]
- B GASKET-float chamber (2)
- C WASHER (8Ø) (2) [for fuel drain plug]
- D PACKING (18Ø) (2)
- E WASHER (10Ø) (2) [for fuel needle & seat ASSY]

SCREW & WASHER "B" SET

Nissan part numbers

16475-H2310 SCREW & WASHER "B" SET
- F PACKING (12.5Ø) (2) [for piston rod]
- G WASHER (7Ø) (4) [for pump lever end]
- H WASHER (5Ø) (2) [for lever linkage]
  WASHER (4Ø) (2)
- I PIN-cotter (1Ø) (2) [for pump lever]
- J WASHER-thrust (2) [for throttle shaft]
- K BOLT (5Ø) (2) [for lever linkage]
  BOLT (5Ø) (2)
- L WASHER-lock (7Ø) (2) [for lever linkage]
- M SCREW-set, needle jet (2) [these screw into the piston]

SCREW & WASHER "A" SET

Nissan part numbers

16465-H2310 SCREW & WASHER "A" SET
- N SCREW (5Ø x 16) (16) [for dome, etc]
- O SCREW (5Ø x 12) (2) [for choke cable bracket]
  SCREW (4Ø x 10) (2)
  SCREW (4Ø x 8) (4)
- P WASHER-lock (8Ø) (4) [for though-bolt which fastens float bowl to throttle body, and for throttle lever next to tubular nut]
- Q WASHER-lock (5Ø) (18) [for choke cable bracket, dome screws, etc]
- R WASHER-lock (4Ø) (2)

Repair Kit

This repair kit contains hard to find parts. But only the GASKET SET is normally needed. If your carb leaks fuel into the fuel bowl (overflows) you will need new Valve assemblies. For A12GX, it uses the same valve assembly as the DCG306 downdraft carburetor (two of them).

Keyster Kit No. K14-0050HW

Datsun Fairlady (Roadster) 1600 SPL311, 2000 SR311, S30 R, 1600 L20, 2000cc 1965-
For carburetor No. 16010-14603, 25601, 16010-E32001

Keyster Kit No. K11-0050HW (DCK-10)

From 1965 Aug Fairlady R16 carb 16010-14603 
From 1970 Aug Datsun 1200GX A12 carb 16010-H2300-1
16010-14603RK
GASKET KIT K12-0050HW
NEEDLE K25-0050HW
Appears to contain one Needle Jet for 1200GX and one for Fairlady

Keyster Kit No K15-4676HW

From 1979 Oct Datsun Bluebird 910 SSS L18T Carb 16010-K1433(FR)
16010-K1433RK
Gasket Kit K12-0050HW
Needle K25-411H

Comparison

USA twin carb 38mm models
410/411 SS
1600 Roadster (single or twin)
2000 Roadster

16101 JET-NEEDLE
16354-14610 Datsun Sports Roadster R16 USA $12.47 USD [M36]
16354-15810 Datsun Sports Roadster R16 USA $12.55 USD [M43]
16354-A7710 Datsun Sports Roadster R16 USA $15.48 USD [M70]
16354-12210 Datsun 410 SS/DP410 MTK $12.53 USD [M15]
16554-H2310 1200GX, PE10 A12T dome top NLA 
16554-H2316 1200GX (from '71-11), PE10 A12T, $10.37 USD [M83]
16455-H5701 B210 A12T JAPAN NLA
16554-H5701 B210 A12T JAPAN, 1975 PE10 A12T NLA (M-89)
16354-16710 411 SS NLA [M6]
16354-16711 411 SS NLA (M40)
16354-16712 411 SS NLA (M44)
16354-15810 411 1.6 $12.55 USD [M43]
16354-22011 510 L18T, L16T NLA [M66]
16354-A8710 N510 1600 SSS NLA [M76]
16354-U0810 510 L16T, L18T from '72-7
16354-H6000 710 L16T NLA [M87]
16354-K1410 710 L16T from '73-7, 1975 610 NLA (M-87)
16354-A8710 610 L16T, L18T NLA (M-76)
16354-U0810 610 L16T, L18T from '72-7 NLA (M-76)
16354-U0810 610 flat tops from '72-7 NLA (M-86)
16354-E3210 M73 
15354-10400 M26

Comparison of M83 vs M66

Suction Spring (a.k.a. dome spring)
16346-10615 411 SS, all A12T, A12GX NLA
16346-12210 411 1.6, 510/610/710 L16T, L18T $7.97 USD
* also same used by 46mm 240Z carburetors

The spring determines when the max opening occurs. Ideally the piston should rise fully (maximum airflow) only at peak HP. A lighter spring (such as Datsun fitted) will allow it to open fully sooner. A heavier spring delays full opening. NOTE: For adjusting transient airflow (quick throttle openings), you can use diffrent weight damper oil.

KIT B CARB
16010-14626 Datsun Sports Roadster R16 USA $40.45 USD

KIT D CARB
16010-14628 Datsun Sports Roadster R16 USA $112.03 USD 
formerly X6010-14628

Oil Gap Gasket 
16342-10400 GASKET $1.05 USD

16101 VALVE-NEEDLE [fuel inlet valve]
16101-10400 Datsun Sports Roadster R16 USA $16.13 USD
16101-G2800 1200GX $13.27 USD (formerly 16101-H1000)
16101-18010 B210 A12T JAPAN 1.5o
and it seems all Dome Tops use this part
Flat tops use a different one
The 46mm fuel bowl tops bolt on but use yet another valve

Float chamber
16064-22010 Gasket-cover $1.65 USD

Oil Cap
16341-25610 Nut-oil Cap $16.87 USD

1200GX
GASKET KIT $4.75 USD
Kit Screw B $6.38 USD
Kit Screw A $4.08 USD

16175-A5101 Gasket-carb $19.90 USD

Photo Index

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A12GX Carburetor Part Numbers

Revision as of 08:14, 16 December 2012

Contents

Variations

Part Names

Parts Breakdown

Carburetor Linkage

Maintenance Parts

GASKET SET

SCREW & WASHER "B" SET

SCREW & WASHER "A" SET

Repair Kit

Comparison

Photo Index