[78w72]

hi. strange question about replacement heater cores. on factory brass/copper heater cores there is a crimp on the bottom hose to about 3/8. from what i have read that was to reduce or limit flow to the core to avoid high pressure & possibly bursting. thats what i read anyways....

my question is, the new aluminum core i bought does not have the crimp, is that because aluminum is stronger & doesnt need it or because the reman'd cores are cheap & they dont want to spend extra money to duplicate the crimp? i have also read that the outlet in the head is reduced in size to also help reduce flow to the heater core.

i have aluminum e-heads & want to do the dual outlets from the rear of the heads but need to know if i have to reduce the outlet size there too. hopefully the aluminum core is stronger than teh originals & dont need the crimp or reduction fitting in the head.

any ideas?