@abuck99 That's a nice observation. I wonder what CSF or Toyota would say about the additional stress on the other components in the cooling system in reference to the 100 series?Someone posted another thread about their mshimoto blowing off hoses- due in part to higher pressure system and in part to lubing the inlet/outlet with dielectric ( not good) - the Mishimoto cap was a 19psi cap. I noticed that the CSF aluminum posted above is a 20psi cap. OEM is a 16psi cap. Not sure how the increased system pressure may affect anything but it if the system was designed for 16psi- does 19 or 20psi impact gaskets, fittings, other smaller hoses through the throttle body-head gaskets ? Higher PSI cap will increase boiling point of a closed system, but is it worth it? Does it matter if the CSF need runs a 20psi or 16psi cap? I would run the OEM cap on the CSF and measure running temps against OEM radiator.
I was also interested in how much that actually effects boiling temps.