Individual throttle bodies for the MX5

Over the last couple of weeks I’ve been taking lots of the MX5’s engine compartment to bits in order to fit a set of individual throttle bodies from a Suzuki GSXR 600. Over the winter, while the car was in the garage, I’ve been collecting parts here and there for the conversion whenever I see them come up cheaply on ebay. Now the weather has improved and the evenings are getting lighter, I’ve started putting it all together.

MX5 inlet manifold with GSXR 600 throttlesTo the right is a picture of most of what is going into the car. The manifold is an old MX5 inlet manifold that’s been cut down very short and had four small aluminium flanges cut out and welded on to mate up to the Suzuki throttle flanges. The throttles themselves have had the injector ports sealed up as I shall be using the original injector locations in the inlet manifold. On the underneath of each throttle is a vacuum port which shall be connected to a common vacuum block to provide a vacuum feed to the ECU, brake servo and fuel pressure regulator. The standard MX5 throttle cable should attach easily to the whole assembly and the Suzuki throttle position sensor should connect into the MX5 loom with only a small amount of rewiring. Other than that, I’m hoping it’ll all be a fairly simple¬†process.

More updates to follow…

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