FAJS 38 DGES Carburetor

Description

They are often used on worked 2 litre Ford pinto engines (Cortina, Capri and Escort) and tend to max out at about 160hp@flywheel on non turbo engines.

Also suitable for blow through turbo setup.  We have had a customer use one of our repro 38DGES carbs (same flow as these Weber 38DGMS carbs) in a blow through turbo setup making 240hp@wheels on a Nissan TB42 engine

Our pre-shipping preparation on all our carbs includes:

– adjustment of float height

– adjustment of throttle stop and balance linkage

– adjustment of idle mixture screws

– general carb inspection to confirm correct operation of throttle, acc pump, choke mechanism, etc.

– we also offer a re-jetting service to customise the carb jetting to suit your engine specs.

All this ensures you can bolt the carb on and it will perform as it should out of the box, ready for fine tuning.

We also offer jetting kits to suit, so you can fine tune the carb once it’s fitted and running on your engine, and we can tailor the jet kit to suit the initial jetting of the carb, so you have several sizes of leaner and richer jets to try out.

The 38 DGS is the big brother to the smaller Weber DGV 32/36 series and is the “High Performance” option for carby conversions.  It shares the same base mounting flange, and almost identical top cover shape for air cleaner fitment, as well as the majority of tuning parts such as jets, valves, etc.  However the 38 DGS incorporates a pair of 38mm butterflies, and 27mm main venturis.  This allows the 38 DGS to flow more air than the 32/36 carb, and therefore is more suited to highly modified 4 cylinders around 2 litres and larger in capacity, right up to 3-4 litre 6 cylinder engines.  They are a popular choice for Holden sixes and Falcon 200ci and 250ci sixes.

The butterflies on the 38 DGMS are synchronous, that is they both open together at the same time. This allows for improved throttle response and engine acceleration.

This 38DGES is an electric choke optioned carb.  The choke increases cold idle speed and richens the air fuel mixtures until the engine warms up.  However the choke is very easily removed and we usually do this on any performance application as it slightly improves air flow and power production, whilst still retaining the high idle feature of the choke if required. .

This style of carby is factory fitted to Ford Capri 3.0litre V6 engines, and is a proven performance upgrade for 1.8 and 2.0 litre Escort and Cortina engines which had 32/36 carbys fitted as standard.

They’re also a fantastic performance upgrade for Holden Gemini, which we have used extensively, Mitsubishi Sigma & Scorpion, Toyota Corolla, Hilux & Celica, to name a few.   Also commonly fitted to larger 6 cylinder engines, we have seen them on both Nissan Patrol and Land Cruiser, they powered the 4 litre engines and provided heaps of grunt with crisp acceleration.  As mentioned above, have had a customer make 240hp@wheels with a blow through setup on a TB42 4.2 litre engine.

Have also seen them working well on Holden 6 cylinder 202ci, and are a good carb replacement on Ford 250ci cross flow engines, as they have similar airflow to the standard Weber 34ADM carbys as fitted to XE and XF Falcons, and bolt up to the stock inlet manifold.  Adaptor plates are available to bolt the carby to all of these other engines to make the carby a bolt on swap.

Weber 32/36 carbys are known to provide enough air flow for about 140hp at the flywheel on worked 4cyl engines, however this 38 carb is larger and would be good for more like 160hp on a naturally aspirated engine.

The throttle shaft is threaded and other standard throttle linkages easily bolt up.  Currently fitted with Ford Escort/Cortina pinto type linkage to suit various models.

Weber DGV and DGS carbs have the same mounting stud pattern as the majority of this style Weber twin barrel downdraught carbs do, and we have adaptor plates available for $50-$90 depending on application.

Comparison of Genuine Weber and Repro carbs – top view

Comparison of Genuine Weber and Repro carbs – top cover removed view