well this is where i get a lil confused.... from what i read, phenolic is a synthetically made polymer. and from what i read, can be brittle and break down over time.
steel on the other hand, will get surface rust. but only on the exterior where it meets the brake pad, inside the caliper, it should be saturated in brake fluid and should stay clean.
thermal expansion?? i dont believe phenolic would expand under temperature increase. steel would. but wouldnt the brake fluid act as a "cooler"? so my brake fluid temperature would increase, but with brake fluid having such a high boiling point, would it matter??
im just throwing out ideas and possible upgrades to prevent having future caliper failure. i was hoping that by sandblasting, etching primer, caliper paint, rehoning the caliper, and some new seals and pistons i could prevent the weather from damaging these calipers again....
04 wj limited; 4.7L V8, 247> 242hd swap; Hayden auxillary tranny cooler; BFG All Terrain 245/70/17; Moog Up-Country Coil Springs; Monroe Reflex Monotube Shocks; JKS BPE's; Chrome Overland tow hooks; Dynomax Ultraflow catback