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  1. Home
  2. Carburetor Parts
  3. Carburetor Parts by Carburetor Types
  4. SU Carburetor Parts

Best SU Carburetor Parts

SU carburetor catalog. Includes SU carburetor kits and other related carburetor parts.

S.U. Carburetor


If you are a true classic car connoisseur then SU carburetors will be familiar to you. If not, don't worry. The team of specialists at Mike's Carburetor Parts has prepared this short article for your enjoyment.

A Brief Look at SU Carburetors History

Although the Skinner brothers, Herbert and Carl, patented their innovative variable venturi design in 1906, it was not until 1910 that they finally succeeded in founding Skinner Union Company Limited. This is how the famous SU carburetors were officially born.

Unfortunately, the company began its activities in a stormy era, just before World War I which forced the Skinner brothers to make the decision to sell the business in 1936 to their main client, Morris Motors. The new company, SU Carburetor Company Limited, part of the Morris organization was much more fortunate, as it soon became the official supplier of MG vehicles, as well as a major supplier of Rolls-Royce, Bentley, Rover, Riley, etc. Turner, Austin, Jaguar, Triumph, Volvo, and the Saab 99.

Its high quality and reliability, in addition to being a major supplier of the most luxurious and sophisticated vehicles of its time, earned SU carburetors a reputation that they retain to this day.

  • SU Carburetor Kits SU Carburetor Kits

Products [24]

Item In Cart Carburetor Check Ball & Check Weight Assortment A101
Carburetor Check Ball & Check Weight Assortment A101
In Stock
Part Number A101
(1)
$39.95
Add To Cart
Item In Cart Filter Plug Washer 238F
Filter Plug Washer 238F
In Stock
ID = .701" OD = .907" THK = .045"
Part Number 238F
(1)
$1.95
Add To Cart
Item In Cart Secondary Tube Seal O-Ring - G273
Secondary Tube Seal O-Ring - G273
In Stock
ID .176" OD .316" THK .070"
Part Number G273
(1)
$1.95
Add To Cart
Item In Cart Solex, Hitachi, SU Fiber Washer .469 x .874 G26F
Solex, Hitachi, SU Fiber Washer .469 x .874 G26F
In Stock
ID .469" OD .874" THK .032"
Part Number G26F
(1)
$1.95
Add To Cart
Item In Cart Ethanol Defense  ED16
Ethanol Defense ED16
In Stock
Ethanol Defense
Part Number ED16
(4)
$22.25
Add To Cart
Item In Cart Clip Assortment A108
Clip Assortment A108
In Stock
Part Number A108
(12)
$9.95
Add To Cart
Item In Cart Carburetor Cotter Pin Assortment - A109
Carburetor Cotter Pin Assortment - A109
In Stock
Part Number A109
(1)
$3.95
Add To Cart
Item In Cart E-Clip Assortment - A107
E-Clip Assortment - A107
In Stock
Part Number A107
(3)
$9.95
Add To Cart
Item In Cart SU Carburetor Needle & Seat - NS221
SU Carburetor Needle & Seat - NS221
In Stock
Part Number NS221
(8)
$9.95
Add To Cart
Item In Cart SU Banjo Bolt Washer G8F
SU Banjo Bolt Washer G8F
In Stock
ID:.664" OD: .875" Thk: .040"
Part Number G8F
$1.95
Add To Cart
Item In Cart SU Fiber Bowl Cover Gasket G18F
SU Fiber Bowl Cover Gasket G18F
In Stock
ID: 2.10" OD: 2.40" Thk: .034"
Part Number G18F
$2.95
Add To Cart
Item In Cart SU Brass Skid Washer G25F
SU Brass Skid Washer G25F
In Stock
ID: 565" OD: .745" Thk: .032"
Part Number G25F
$2.95
Add To Cart
Item In Cart SU Fiber Washer G27F
SU Fiber Washer G27F
In Stock
ID: .669" OD: 1.064" Thk: .032"
Part Number G27F
$1.95
Add To Cart
Item In Cart Copper Top Jet Washer G34F
Copper Top Jet Washer G34F
In Stock
ID: .534" OD: .634" Thk: .032"
Part Number G34F
$1.95
Add To Cart
Item In Cart Jet Gland Conical Washer G40F
Jet Gland Conical Washer G40F
In Stock
ID: .25" OD: .386" Thk: .065"
Part Number G40F
$1.95
Add To Cart
Item In Cart Copper Bottom Jet Washer G38F
Copper Bottom Jet Washer G38F
In Stock
ID: .390" OD: .685" Thk: .032"
Part Number G38F
$1.95
Add To Cart
Item In Cart SU Rubber Grommet G72F
SU Rubber Grommet G72F
In Stock
ID: .463" OD: .853" Thk: .218"
Part Number G72F
$1.95
Add To Cart
Item In Cart SU Pipe Casting Bolt Washer G89F
SU Pipe Casting Bolt Washer G89F
In Stock
ID: .385" OD: .573" Thk: .064"
Part Number G89F
$1.95
Add To Cart
Item In Cart SU Cork Jet Sealing Ring G118F
SU Cork Jet Sealing Ring G118F
In Stock
ID: .787" OD: 1.00" Thk: .183"
Part Number G118F
$1.95
Add To Cart
Item In Cart SU Cork Jet Gland Washer G120F
SU Cork Jet Gland Washer G120F
In Stock
ID: .220" OD: .392" Thk: .179"
Part Number G120F
$1.95
Add To Cart
Item In Cart SU Fuel Fitting Washer G1248F
SU Fuel Fitting Washer G1248F
In Stock
ID: .580" OD: .814" Thk: .032"
Part Number G1248F
$1.95
Add To Cart
Item In Cart SU Fiber Bowl Cover Gasket G125F
SU Fiber Bowl Cover Gasket G125F
In Stock
ID: 1.75" OD: 2.05" Thk: 1/32"
Part Number G125F
$2.95
Add To Cart
Item In Cart SU Carburetor Float Chamber Seal G1214F
SU Carburetor Float Chamber Seal G1214F
In Stock
Part Number G1214F
$6.95
Add To Cart
Item In Cart SU Carburetor Float FL2020
SU Carburetor Float FL2020
In Stock
AUSTIN, INNOCENTI, JAGUAR, MG, MORGAN, MORRIS, RILEY, ROVER, TRIUMPH, VANDEN PLAS, VOLVO, WOLSELEY 1959-74
Part Number FL2020
$29.95
Add To Cart

SU Carburetor

1
Screw
28
Cap Nut
2
Body
29
Serrated Washer
3
Throttle Spindle
30
Aluminum Washer
4
Bush
31
Filter Gauze
5
Circlip
32
Banjo Bolt
6
Circlip
33
Fibre Washer
7
Butterfly Valve Plate
34
Auxiliary Carburetor starter
8
Adaptor
35
Acceleration Needle Assembly
9
Gasket
36
Spring
10
Distributor Vacuum Pipe
37
Jet
11
Suction Chamber
38
Spring Plate
12
Damper
39
Dust Shield
13
Washer
40
Screw
14
Spring
41
Lockwasher
15
Needle
42
Solenoid
16
Jet Assembly
43
Bracket
17
Jet Bearing
44
Connecting Arm
18
Nut
45
Banjo Bolt
19
Spring
46
Washer
20
Jet Housing
47
Washer
21
Float Chamber
48
Banjo Bolt
22
Float Chamber Lid
49
Fibre Washer
23
Float
50
Aluminum Washer
24
Fuel Inlet Needle and Seat
51
Valve
25
Float Arm
52
Spring
26
Float Pivot Pin
53
Gland Washer
27
Gasket
54
Dished Washer


SU Carburetor Explained

Carburetors were once responsible for delivering the right amount of air/fuel mixture to the engine, and to achieve their mission, they had to overcome many challenges. Possibly one of the biggest of these challenges had to do with how to regulate the mixture under different driving conditions, idle, cruise speed, acceleration and deceleration.

In that sense, SU carburetors provided an innovative yet bold solution. Constant depression technology.

Constant depression carburetors like the SU are based on a variable venturi that is controlled by a piston. In turn, the piston worked as the metering rod (needle) whose seat was the orifice that we know as "jet" and whose movement was controlled by the air flow that passed through the carburetor. This simple system made it possible to control the amount of fuel that entered the carburetor under the different driving conditions in an efficient way, since it automatically "adapted" to driving needs.

Among the main advantages of SU carburetors are:

?Ease of adjustment, thanks to its “pseudo auto calibration” ability.

?Simplicity, since they do not require multiple jets like conventional “fixed-venturi” carburetors

?Fewer moving parts which translate into higher reliability

Although SU carburetors were perfect for daily driving vehicles, their principle of operation was not without some disadvantages

?Since SU carburetors restrict free air flow, they are rarely used on high performance applications.

?The lack of an acceleration pump further reduces the viability of these carburetors in high-performance vehicles.

?The piston requires to be filled with light oil that has to be replenished in a timely manner.

Different Types of SU Carburetors

Between 1937 and 1972, SU introduced a wide variety of carburetors to the market, most of them aimed at the most prestigious British car brands.

?H type carburetor: the original SU carburetor introduced in 1937 by the S. U. Carburetor Company Limited and used in many Morris cars.

?HD type carburetor: introduced in 1954, the new design included a rubber diaphragm integral with the main jet.

?HS type carburetor: four years later, in 1958, the design changed again to include an external flexible pipe to transfer fuel to the carburetor (in previous designs fuel went through the arm into the carburetor body)

?HIF type carburetor: a radical change was introduced in 1972 with the incorporation of an integral horizontal float bowl.

Mike’s Carburetor Parts Advantage

Looking for parts for your precious classic car? Then look no further. At Mike's Carburetor Parts we offer high-quality, hard to find parts such as SU Carburetor Needle & Seat, SU Carburetor Kits for Austin, Hillman, MG, Riley, Jaguar, Morgan, Rover, Triumph, Vanden Plas, Volvo, Wolseley, and more.

Your car deserves the best, specialists who are passionate about restoring your carburetor to "like new" condition. At Mike's Carburetor Parts, we have the best advice for all kinds of requirements you may have.


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