[DocDirk]

Recently I've been reading about cooling systems and some tech articles urge the use of the highest pound radiator cap that the radiator is rated for....up to 28-29 lbs if possible. Mine is a 4 core, 18 x 26 aluminum radiator of unknown origin (a Vern's West Coast special). I have a 16# cap on right now, but overheating is a problem... and I've read that once the cap vents the engine will not reduce in running temperature until turned off (?perhaps the reason that running on the freeway didn't reduce the temp of my engine running at 225 deg in town?)

Coolant is 70/30 water/glycol. Pure water with an inhibitor might cool better but then boils sooner no doubt?

What pound caps do you run on your cobras? Is maximal really optimal?

Is there any way to determine maximal / optimal lb pressure for the cap without knowing mfgr. source to inquire?

Thanks!

Dirk