Preparing a Weber carburetor for a turbo conversion takes more than just upgrading the carburetor parts. You must upgrade other components to convert the carburetor to run with turbocharger power. Knowing a lot about a car engine, automotive components and carburetor operation will be essential in preparing the Weber carburetor. One aspect that you must leave to the professionals is the tuning the carburetor to run on the new turbo conversion.
Remove and clean the Weber carburetor. Remove the exhaust manifolds by unbolting them from the engine. Jack up the front of the vehicle and slide the jack stands under the front suspension. Disconnect the exhaust manifolds from the exhaust pipes. Slide the manifolds out of the engine compartment.
Mount the new exhaust manifolds that were designed to support a turbocharger. Reconnect the manifolds to the exhaust pipes and lower the vehicle. Both the new manifolds to the engine. Install the turbo conversion kit, as per the manufacturer's instructions. Remove the old spark plugs and insert the new high performance spark plugs.
Locate the oil pressure line and feed it to the turbo. Insert the intercooler, if you choose the install one, between the oil pressure line and the turbo output.
Remove the throttle shaft from the Weber carburetor. Install a new sealed throttle shaft that will prevent the nitrophyl floats from crushing when extra boost is provided by the turbo. Remount the Weber carburetor. Connect the intercooler output to the Weber with a carburetor hat coupler.
Replace the original fuel pump with a high-pressure fuel pump. Remove the fuel regulator and install the new fuel regulator designed to support a turbo. Install the air filter, linkages and other engine components you removed to gain access to the carburetor.
Tow the automobile to a qualified automobile technician so he can hook the engine to a dynamometer. Tune the converted Weber carburetor under the driving conditions the dynamometer will place it under.
