Quote:
Originally posted by bdunosk
Well... bigger diameter means slower flow, but that doesn't really matter since you're only concerned about flow speed through your block and radiator. Of course... doesn't that mean lower pressure within the tubes = trouble keeping them patent? But the 1250 flows a lot of water... just stick it in a sink-full of water and turn it on. Make sure your girlfriend / wife isn't around to see you do this.
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You meant that the other way around, I think!
The bigger tubing will give you less flow speed, but the same flow rate.
There's nothing wrong with 5/8 tubing, it's just not necessary. At the flow rates we usually have, the difference in flow resistance between 1/2 and 5/8 tubing is not worth mentioning.
If I was you, I'd get 5/8 barbs that'll fit a 1/2 NPT connection, and sell it. Call it a "Custom tubing upgrade kit".
Thing is, I already know what you paid for it...
