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Setting up your Head Properly: Carburetion

After having your head re-worked to high quality, close tolerances, setting up your head requires expert help re-jetting the carbs. This will add to its performance, clean running, emissions level and longevity. Injection systems also require re-calibration, but this is not quite as critical.

We recommend that you use a rolling road with gas analysis equipment. In general, you will need to reduce the needle jet by one size and slide by half a size but each vehicle requires individual attention to get the best.

There is a danger that if carburation is too rich, “petrol wash” will cause the oil in the engine to wash away, causing premature wear to the bores, guides and valves, significantly reducing the life of these parts.

To find a local rolling road, see the list; here.

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