3. The distance of the firewall to the back plate of the spinner is about 7-31/4”. The
standoff length required will be 3-1/8”, which will give about a 1/8” clearance between
the back plate and the cowl. See pictures below for mounting the engine.
4. Locate the 4 mounting blocks for the cowl and install them as shown in the picture
below. Use 30 minute epoxy for the step. Place some scrap shims as shown in the
second pic below. The scrap shims will prevent cowl from being squeezed in and
damaging it.