Written for the do-it-yourselfer and good enough for the professional!

Table of contents:

• Introduction
• Chapter 1: Basic carburetion
• Chapter 2: Carburetor fitting
• Chapter 3: Maintenance and servicing
• Chapter 4: Overhaul
• Chapter 5: Converting to Weber carburetors
• Chapters 6 -13: Specific Weber carburetors
• Chapters 14-16: Specific Zenith Stromberg carburetors
• Chapters 17-21: Specific SU carburetors

It covers the theory, specifications, fault diagnosis, repairs and service adjustments on the following carburettors:

• Weber DAF
• Weber DCD
• Weber DFA
• Weber DFV
• Weber DFD
• Weber DFE
• Weber DFM
• Weber DFT
• Weber DGV
• Weber DIF
• Weber IDA
• Weber IDF
• Weber IDS
• Weber IDT
• Weber DCNF
• Weber DCOE
• Weber DFAV
• Weber DFTA
• Weber DGAS
• Weber DGAV
• Weber IDAP
• Weber IDTP
• Zenith Stromberg CD “constant depression” carburetors
• Zenith Stromberg CD
• Zenith Stromberg CDS
• Zenith Stromberg CDS-2
• Zenith Stromberg CDSE
• Zenith Stromberg CD-2E
• Zenith Stromberg CDST
• Zenith Stromberg CDSET
• SU type H
• SU type HD
• SU type HS
• SU type HIF (including electronic) carburetors and auxiliary starting devices

Some 352 pages that cover the adjusting, tuning and overhauling of the above mentioned carburetors.

Contains step-by-step instructions and Haynes Hints.

Language: English

Set of 5 x A4 Sheets of Flexoid Gasket Paper Material.

Almost a "First Aid Kit" for the home mechanic!

This set of first quality gasket paper contains 5 sheets in DIN A4 size (300 x 210 mm or roughly 11.8 x 8.3 inches) in 5 different thicknesses.

You can cut these sheets to almost any desirable size and shape to help you out when the required gasket is not at hand.

The sheets are made of cellulose based, plasticised gelatin-impregnated material.

The sheets are of the following thickness:

• 0.15 MM
• 0.25 MM
• 0.4 MM
• 0.8 MM
• 1.6 MM

Italian style clear green fuel line hose with 8 mm inner diameter.

This is the perfect finisher for a successful restoration!

This fuel hose has an 8 mm inner diameter and 11 mm outer diameter.

It is sold in lengths of 50 cm (19.7 inch).

When ordering multiple lengths, we will do our utmost to supply that as 1 piece.

This hose uses 10 - 12 mm jubilee clips.

Alternatively, this hose simply looks great when used with the "Endless band & Buckle" hose clamps like in the photo.

Please note:
This hose is NOT E10 resistant.
Do not use this hose if you are not able to avoid using Ethanol-containing fuels.

This is the top-of-the-line Gates flexible fuel line, resistant to modern day, aggressive, fuels.

Textile covered for the correct "vintage" look.

This fuel hose has an 8 mm inner diameter and 13 mm outer diameter.

It is sold in lengths of 0.5 meter.

When ordering multiple lengths, we will do our best to supply it as 1 piece.

This small-diameter hose has a durable and oil resistant textile cover that provides a dependable and safe service on fuel circuits in passenger cars.

This hose is resistant to heat, leaded and unleaded fuels, oil and Diesel.
Please note that E10 fuel resistance is NOT mentioned by the manufacturer!

Recommended for clamped hose applications on low-pressure (carburetor) fuel systems in passenger cars.
NOT suited for high pressure fuel injection systems.

Key Features and Benefits:

• The tube resists heat, fuel (leaded and unleaded petrol, diesel) and oil
• The braided textile cover reinforces the hose and is resistant to heat, ozone and weathering
• Working pressure up to 0.6 MPa (6 kg/cm²)
• Temperature range from -35°C to +100°C

Maximum, single, length: 15 meters.

This hose uses 11 - 13 mm jubilee clips.

This is the top-of-the-line Cohline, E10-resistant, flexible fuel line / hose.

This fuel hose has an actual inner diameter of 7.5 mm and 13.5 mm outer diameter and therewith a nice and tight fit for 8 mm fuel unions.

It is sold in lengths of 1 meter (3 Feet 3 3/8 inch).

When ordering multiple lengths, we will do our best to supply it as 1 piece.

Maximum, single, length: 15 meters.

Black rubber textile reinforced hose for conveying commercial fuels, including Super Grade and E10.
Also suitable for Diesel fuels with Bio–Diesel addition.

Construction:

• Cover: Black smooth CR
• Reinforcement: High tensile synthetic textile plies
• Liner: Black smooth NBR

Temperature:

• -30°C to + 50°C (Petrol), 65°C (Diesel) / -22°F to + 122°C (Petrol), 149°C (Diesel)

Safety Factor:

• 3:1 (Burst pressure = 3 x working pressure)

Regular pressures:

• Regular working pressure: 10 Bars / 145 PSI
• Tested pressure: 20 Bars / 290 PSI
• Bursting pressure: 30 Bars / 435 PSI

Minimum bend radius in mm:

• 70 mm

This hose uses 11 - 13 mm jubilee clips.

Endless Band Hose Clamp with Buckle - 5 mm wide.

Again one of those items that allows you to put the finishing touches on a restoration!

This is the famous "endless band hose clamp with buckle" that was used throughout the 1950's, 1960's and 1970's in the car industry.

Unfortunately, these band clamps are only suitable for one-time use and are discarded after removing them.

Over the years, these clamps have become harder and harder to find but we managed to find a source!

We are selling these in sets.

Such a set consist of the following:

• Approximately 100 cm Zinc-plated band, 5 millimeters wide
• 3 buckles

This way, you have roughly a foot (or 33 cm) of band per clamp / buckle which is more than enough for regular applications.

Thanks to the generous length of band, there is virtually no limit to the diameter or circumference of the clamp that you wish to apply although these were usually applied to small diameter fuel lines.

Please note that this style of clamping is NOT suitable for steel-braided lines.

Stainless Steel Jubilee Clip Hose Clamp for 8 mm Flexible Fuel Line.

This hose clamp (or jubilee clip) is perfectly suited for our 8 mm internal diameter fuel line.

Neatly finished, the stainless steel (Grade 304) makes it the perfect compliment to our textile covered fuel hose.

It is rated for between 8 mm internal diameter (i.e. 11 - 13 mm external hose diameter).

Can be tightened using a 7 mm socket or flat head screwdriver.
Excellently suited for use with our Gates Flexi Driver tool.

This is the top-of-the-line Cohline, steel-braided E10-resistant, flexible fuel line / hose.

This fuel hose has an 8 mm inner diameter and 16 mm outer diameter and is therewith suitable for 8 mm fuel unions.

It is sold in lengths of 1 meter (3 Feet 3 3/8 inch).

When ordering multiple lengths, we will do our best to supply it as 1 piece.

Maximum, single, length: 15 meters.

Black rubber textile reinforced hose for conveying commercial fuels, including Super Grade and E10.
Also suitable for Diesel fuels with Bio–Diesel addition.

Construction:

• Cover: Black smooth CR
• Reinforcement: High tensile synthetic textile plies
• Liner: Black smooth NBR

Temperature:

• -30°C to + 50°C (Petrol), 65°C (Diesel) / -22°F to + 122°C (Petrol), 149°C (Diesel)

Safety Factor:

• 3:1 (Burst pressure = 3 x working pressure)

Regular pressures:

• Regular working pressure: 10 Bars / 145 PSI
• Tested pressure: 20 Bars / 290 PSI
• Bursting pressure: 30 Bars / 435 PSI

Minimum bend radius in mm:

• 70 mm

 This fuel line uses 15 - 17 mm jubilee clips.

Sytec Fuel Line One Way Valve.

We have two versions available:

• Suitable for 6 mm internal diameter fuel hoses
• Suitable for 8 mm internal diameter fuel hoses

Silver anodized finish.

Prevents fuel from leaking back into the fuel tank.

Suitable for regular fuel, E10, E85 and Diesel.

Viton seals.

We strongly advise you to secure your fuel lines using our stainless steel jubilee clips, despite the barbed edge on these unions.
For your convenience, you can order these clips right along with the union by simply selecting it through the drop-box above.

Calibrated gauges to measure jet sizes.

The perfect way to determine the exact size of jets, regardless of what is indicated on them.

Sometimes jets are drilled out to requirement and / or the original indicators are removed or illegible which leaves you questioning the true size.

With these gauges, you can still determine which size these jets are.

Indispensable when working on modified carburettors!

Two different sets available:

Set 1: 20 gauges, ranging from 0,45 mm to 1,50 mm
Set 2: 16 gauges, ranging from 1,50 to 3,00 mm

Priced per set!

Jet sizing tool to measure jets between 0.5 and 1.5 mm internal diameter.

Measurements are taken by inserting the tapered needle into the jet.

The size can then directly be read from the scale.

Jet drill set comprising 50 jet drills and and 4 pin vises.

The perfect way to fine-tune any jet to suit your needs.

Also highly suited to clean clogged-up jets.

The set contains:

• 4 pin vises to suit all drill sizes included
• 10 drills ranging from 1,0 to 2,0 mm:
  1.0, 1.1, 1.2, 1.3, 1.5, 1.6, 1.7, 1.8, 1.9 & 2.0 mm
• 20 drills ranging is size from 0.3 mm to 1.6 mm:
  0.3, 0.35, 0.4, 0.45, 0.50, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.2, 1.3, 1.4, 1.5 & 1.6 mm
• 20 x drills Gauge Number 80 to 61 (0.343 to 0.991 mm / 0.0135 to 0.0390 inches )

Jet reamer kit comprising 16 reamers and and a pin vise.

The perfect way to fine-tune any jet to suit your needs.

The set contains:

• 1 pin vise to suit all reamer sizes in this set
• 1 storage case
• 16 reamers ranging is size from 0.33 mm to 2.00 mm:
  0.33; 0.40; 0.45; 0.50; 0.60; 0.70; 0.75; 0.80; 0.90; 1.00; 1.10; 1.20; 1.40; 1.60; 1.80; 2.00 mm

Gunson Colortune See Through Spark Plug Kit.

The Tune-up plug for Petrol or LPG, 2 and 4 stroke engines with single, twin or multiple carburettors or fuel injection systems.

The original and best tool for seeing what's happening inside the combustion chamber of the petrol engine.

It allows you to see the combustion and to adjust the mixture by color.

Fits most petrol engines in standard form with additional adapters available for vehicles with alternative sized spark plugs.

Kit includes:

• See-Through Spark Plug
• Hexagonal adapter for spark plug wrench
• Copper sealing washer
• Extension Cord
• Extension tube with mirror
• Cleaning brush
• Instructions in English

Colortune will fit most vehicles.

Extra adapter sizes available separately

Available in the following basic thread sizes:

• 10 mm
• 12 mm
• 14 mm

For our complete offerings on Gunson Tools, please visit www.GunsonShop.com.

Gunson Article Number: G4074

Gunson Car Balancer.

Internal combustion engines use a mixture of air and petrol to generate their power.

The performance therefore is influenced by the air flowing into it and the petrol that is metered out by the carburettor.

Unless the air flow in Twin or Multiple carburettors is correctly set, the correct mixture adjustment is unlikely to be achieved and this is the simplest tool to achieve that.

Suitable for use on SU, Solex, Auto-Lite (Fomoco), Stromberg, Weber and Zenith and can be adjusted to fit most carburettors including sidedraft, downdraft with air intakes (Venturi) from 25 mm to 67 mm (1”-2”) diameter

• Easy read scale indicates the air flow and allows adjustment to optimum efficiency
• Provides smoother and better acceleration
• Carbalancer can be adjusted to fit most carburettors
• Easy to follow instructions

The user manual for the Gunson Carbalancer, in English, can be downloaded HERE.

Available from our stock, ready to be shipped.

For our complete offerings on Gunson Tools, please visit www.GunsonShop.com.

Gunson Article Number: G4053

2 Column Manometer

The New Carbtune Pro - essential for balancing multiple carburettors.

• Superior resolution to dial type gauges
• Easily read scale
• Comes complete with 2 x 5mm and 2 x 6mm ultra high temperature glass filled engineering nylon adapters and rubber hoses.
• Adapters will suit DHLA & DCOE carburettors and many motorcycle carburettors.
• Stainless steel columns indicate vacuum
• No calibration or set-up required
• High impact plastic casing and scale tubes - no glass
• Dampers supplied to reduce fluctuations
• Full instructions

Also suitable for car- and motorcycle engines which have the possibility of hooking up vacuum lines.

Replacement line can be found HERE.
Replacement, brass, vacuum take-off adapters can be found HERE.

4 Column Manometer / Synchronometer.

This is the New Carbtune Pro, the essential tool for balancing multiple carburettors.

• The column type scales give a superior resolution compared to dial type gauges
• Comes complete with 4 x 5 mm and 4 x 6 mm brass adapters and 4 silicone rubber hoses.
• The supplied adapters will suit the Dellorto DHLA and Weber DCOE carburetors and many motorcycle carburettors.
• The stainless steel columns indicate the vacuum that each cylinder draws
• There is no calibration or set-up required
• Made out of a high-impact plastic casing and scale tubes - not glass to prevent breakage
• The built-in dampers reduce fluctuations
• Supplied with full instructions

Also suitable for car- and motorcycle engines which have the possibility of hooking up vacuum lines.

Replacement line can be found HERE.
Replacement, brass, vacuum take-off adapters can be found HERE.

Vacuum take-off adapter for Dellorto DHLA and PHF.

Vacuum take off adapter, will fit standard take off point of DHLA carburetors, DHLB carburettors, and PHF carburettors.

Thread: 5 mm x 0.8

Overall length: 20 mm

Also fits the Weber DCOE series carburettors and Solex ADDHE.

Synchrometer airflow meter for various carburetors.

Pushes into the trumpet / ram pipe / velocity stack or throat to measure the airflow to enable you to balance multiple carburettors.

• Instructions included
• The original genuine high quality German made product
• Can be used for all Weber DCOE and IDF and Dellorto DHLA, DRLA carbs with round intakes or trumpets
• Can also be used with motorcycle carburetors with round intakes

Total length of unit 121mm

Rubber cone dimensions:
Small end diameter 40mm
Large end diameter 55mm
Length of cone 36mm

Carburetor Vacuum Synchronizer Set.

4 gauge tool kit, mounted on a solid metal frame for easy reading.

The vacuum gauges range from 0 to -1 bar.

This measurement tool was designed to check and adjust motorcycles and cars with 2, 3 or 4 carburetors.

Each of the gauges is equipped with a damper to obtain stable readings.

The gauges allow to measure the vacuum in each of the gas tubes so you can make direct adjustments to obtain a smooth running engine.

The set comes with all necessary parts like:

• 4 92 mm gauges fixed on a metal frame
• 4 rubber hoses 8 x 5 x 750 mm
• 4 hose clamps
• 4 adapters M6 x 0.75 - length 53 mm
• 4 adapters M6 x 1.00 - length 60 mm
• 4 adapters M5 x 0.75 - length 98 mm
• 4 adapters M6 x 0.75 - length 170 mm
• 1 extension 6 x 55 mm
• Red, blow-molded carry case

Fits the Dellorto DHLA, Dellorto DHLB, Dellorto DRLA, Dellorto PHF, Weber DCOE, Weber DCOM Solex ADDHE and many many more. Please check the list of adapters to see if they fit your particular carburetors.

LOCTITE 542

Thread Sealant - medium strength.
For fine threads in hydraulic, pneumatic and general fittings.
Fast curing.

LOCTITE 542 is designed for the locking and sealing of metal pipes and fittings as well as other cylindrical metal assemblies.
The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration.
The thixotropic nature of LOCTITE 542 reduces the migration of liquid product after application to the part.

Your Benefits:

• Ideal for fine threads as used in hydraulic, pneumatic & general fittings
• Suitable for metal threads only
• Instant low-pressure seal
• Resistant to fuel, oil, coolants and hydraulic fluids
• Locks connection against vibration loosening
• DVGW approval (EN 751-1): NG-5146AR0855

Excellently suited for sealing connections on carburetors and fuel pumps!

LOCTITE 243

Threadlocking Adhesive - medium strength.

General purpose.

Suitable for all metal threaded assemblies.

LOCTITE 243 is a general purpose threadlocker of medium bond strength.
This threadlocker secures and seal bolts, nuts and studs to prevent loosening due to vibration.
The product works on all metals, including passive substrates such as stainless steel, aluminium and plated surfaces.
It is proven to be tolerant of minor contamination due to industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluids.

Your Benefits 

• Prevents loosening on vibrating assemblies, e.g. pumps, gear boxes or presses
• Works on all metals, including passive substrates (e.g. stainless steel, aluminium, plated surfaces)
• Proven to tolerate minor contamination by industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluids
• Permits disassembly with hand tools for servicing P1 NSF Reg. No.: 123000

The Gunson Digital Exhaust Gas and CO Tester is the perfect (and affordable !) tool for the DIY mechanic to measure and adjust the CO-percentage in the exhaust gases of cars, motorcycles, boats etc equipped with a petrol-driven internal combustion engines.

Allows you to measure the current CO-percentage after which you can adjust it to the required level.

This system is equipped with a pulse pump and is suitable for both leaded and unleaded petrol / gasoline.

The tester will calibrate itself in the open air, has no moving parts to reduce wear and tear and has no filters.

Measures the CO % to 0,5 % accurately throughout the range.

Power: 12 Volt car- or motorcycle battery.

The set comprises the following:

• The Gastester with box
• Puls pump with water trap
• Metal exhaust probe
• 3 Flexibel pipes
• Operating Manual in English

If you require the owner's manual again, you can download it HERE.

Article Number: G4125

Additional instructions on adjusting the Gastester, in English, can be downloaded HERE.

This is a short instruction video, again in English:

Available from our stock, ready to be shipped.

For our complete offerings on Gunson Tools, please visit www.GunsonShop.com.

Gunson Article Number: G4125