Do your Coolant temps and AIT's a favor

[RETed]

Originally Posted by vex

I imagine one could theoretically further increase the heat rejection benefit of the coolant passages by filling the egr void and plug area with an insulator material (silca comes to mind as an example) and then blocking off the locations themselves.

You're right, but here's the problem...

How do you get (the silica - "silca"[sic?]) to stick to the metal housings?
RTV'ing the passages (on rotor housing, side irons, and intake manifolds) has been done before, but RTV only has a claimed 700F intermittent temperature resistance.
Almost anything else will either:
1) burn due to temps?
or, 2) come loose due to heat expansion / contraction from the engine.

The good thing is that once everything is plugged up, it's a dead end.
So, the plugs that are closest to the engine (i.e. rotor housings and side irons) are getting the hottest.
The plugs at the intake manifold should hold up fine?


-Ted