Fitting Triple Weber DCNF Carburettors
This modification is the old school unltimate setup for the V6 Essex. Originally introduced by Swaymar in the 1970's, this was the way to get ultimate power from the engine.
This is a quick run through of the steps needed to get the manifold fitted to your Essex V6. The manifold I fitted to my TVR was the Ric Wood supplied manifold, taken from the original Swaymar Casting. This had a slight issue with the front carb platform where there was a slightly offset stud location, meaning a small amount of grinding out of the manifold was needed to allow the front carb to flow correctly. Please note that since fitting, I found that the carbs are better fitted the other way round, as they can run lean after heavy braking if fitted this way. So, take this as a guide, but remember to fir the carbs the other way round!
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The new manifold after fitting the studs
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The front port area requiring grinding. New manifolds are now CNC machined and so won't have this manufacturing defect. Below shows grinding in progress.
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​New inlet manifold gasket ready in place.
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Manifold tightened using the new supplied Allen Head Bolts
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Ready to fit the thermostat housing take-off, thermostat, gasket & housing.
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Inlet ports taped up while manufacturing the throttle cable brackets etc
Some proprietory hose fittings used for the thermostat bypass hose take-off.
Take-off in place, also temp sender fitted. Note these were all blanks & required drilling & tapping.
Some self made brackets for the accelerator cable & choke cables.
Choke cable bracket fitted. I later decided this wasn't needed as the engine ran fine when cold.
The throttle cable in situ.
As no air filter exists for the TVR with this setup, Back in the day i made a cardboard template, so I could cut out the aluminium air filter baseplate. These days I would have 3D printed a template. See my shop for templates - I will be listing these soon. I already have carb gaskets in stock for the DCNF carbs, and also the standard 38DGAS - including manifold gaskets.
More photos & info to follow. ​