Radiator Size ????
Do a search on FABO for "overheating"
Then come back and tell me what they have in common.
Yeah, I know. I’m pleading temporary insanity.
Sometimes I go down the rabbit hole so far I need help getting out.
I suspect this is going to be one of those times.
One thing to note about the electric water pump is the size of the impeller. The Moroso I have measures .330 and it flat, while the high volume Milodon I have measures .625 (almost double) at the edge and it tapers larger to follow the volute.
Plus, Moroso with their loosey goosey tolerances have the impeller .070 away from the body. So I’m going to machine .060 off the impeller snout to close that gap to .010 to help with exit losses there.
The fitting for the suction (lower) hose goes from 1.250 I.D. to 3/4 inch!!!! Horrible. And where the fitting screws in, there was a shelf (for lack of a better term) that covered half of that hole.
So I bored out the fitting to about .820 and cleaned up the shelf in the body and at least you can see some of the impeller looking through the hole.
I called Meziere on Thursday and talked to one of their guys. That was eye opening for sure.
He said the owner has a BBC SG car that they test with. He uses their 55 GPM pump. That’s free flow. Then they hooked up a flow meter to the system and in actual use that 55 GPM pump only flowed 27 or 28 GPM!
What does that mean if you start with a 32 GPM pump? I can’t say but if it only loses 20% of its free flow you are down to about 25 GPM.