Throttle Bodies

2900, 2910 Series, DCOE type DCOE type throttles on a 16V VW Click here for larger view

TWM 2900 Series throttle bodies are a direct replacement for the following sidedraft carburetors: Dellorto DHLA, Mikuni PHH, SK Racing, Solex ADDHE, and Weber DCO and DCOE. All available in the following sizes: 40, 42, 45, 48, 50 and 55 mm.

Throttle Body Extensions Click Here for Info

These throttle bodies are supplied with a center compensating linkage which connects the two throttle shafts allowing adjustment for balance.

DCOE type throttles Click here for larger view

TWM 2910 Series throttle bodies are the left-hand unit [the right hand is 2900 series] in a pair viewed from the airhorns towards the engine. 40, 42, and 45mm units will fit at center-to-center dimensions as low as 83mm provided the shafts are trimmed. 48 and 50mm units cannot be installed where the center-to-center dimension is less than 90mm without some special engineering.

Injectors to be used in these throttle bodies are Bosch, Lucas or Rochester with 14mm O-rings at both ends. Please note: Some Siemens injectors are too short. A fuel rail kit, adjustable for different manifold layouts, attaches to integral mounting points.

Each barrel has a by-pass screw for idle speed air flow adjustment. The left hand unit incorporates a 5/16 " D-drive and mounting bosses for TWM and other Throttle Position Sensors. O-rings are supplied for the manifold/throttle body interface. Ports are provided, in each barrel, for connection to a MAP sensor. MAP = Manifold Absolute Pressure.

Dave Levy's innovative use of our 2900 Series Throttles on his down-drafted Ferrari heads. Click here for larger view of the photos.

Our 2900 Series Throttles fitted with
K-Jetronic nozzles on Eliot Shanabrook's Alfa
Click here for larger view.