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just a quick ? about 86 heatercore....

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Sep 22, 2002
can i use 5/8" I.D. tubing with the inlets and outlets of the core? even if I have to cut down the ins/outs on the core that's fine, I'm just not sure what size tubing will work, and I really want to order.

If 5/8 doesn't work, is there an alternative that uses 5/8 tubing that is comparable??? thank you guys!
no i want to use 5/8" I.D. tubing, but I don't know what size barbs the hc has.
so if you are using 5/8" tubing you dont need to adapt the barbs. the tubing can be stretched over the 3/4
mfpmax said:
3/4 is bigger than 5/8s so which ever side is the biggest, its 3/4s...

Or something...do the math...cause I can't.

lol. ok. which side should be inlet, and which should be outlet, for the heatercore?