On mine the cat is still exposed, but it's not as visible, plus there are some vents on the belly pan still, so I think I should be fine. Having said that, how would I know that it's overheating?
If the heat is too intense for the bellypan you would smell the inside surface starting to melt locally, the odor most obvious when you stop. This shouldn't happen, however, if 1), there is an air gap from converter/pipe to the part and 2), if the part has heat reflective material applied to the inside surface (available from DEI, for example). I would inspect the part when you remove it for an oil/filter change. I have the Ilmberger CF bellypan on my SS with stock exhaust and have had no issues with heat this season.
I should mention I sell bellypans made of fiberglass for the Monster 821/1200 models, where the exhaust runs close to my part on the RH side. I designed in 19mm of air gap (exhaust to part), plus I use DEI reflective material on the part opposite the exhaust (see photos). In five years selling bellypans used all over the world there has never been a complaint about heat damaging the parts.
Last edited by rz33v4; 11-29-2019 at 05:45 PM.