The GTM Supercar Build Log

Diffuser Prepped for Louvers

Today I prepared the diffuser for the installation of the louvers. The louvers will greatly increase airflow through the engine bay, keeping the engine quite a bit cooler. To get the diffuser ready I first had to mount the diffuser on the car, find its center, and mark the inside of the diffuser for the body edge so that the louvers do not overlap the body where the diffuser mounts to. Once that was done I removed the diffuser and set the louver assembly in place. Once I had it where I wanted I drilled out all of the rivet holes, cleckoing it as I went. Holes drilled, the louver assembly was removed and the diffuser was flipped over and the louvers were re-clecko’d on the interior side of the diffuser. I then etched the inboard perimeter of each louver onto the surface of the diffuser to prepare it for cutting. With the perimeter scribed, I cut out the louver holes while leaving the scribe marks intact. This allows for the installation of the louvers on the interior side of the diffuser while keeping the aluminum edges hidden by the diffuser. Once the diffuser was cut I clecko’d the louvers in place and bent the fins up to match the angle on the strakes. The strake ‘ears’ had to be bent to sit flush on the diffuser.

At this point I need to pull the louvers off again and take them for powder coating. Afterwards, I will be able to rivet them in place and mount the diffuser.

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