[Jim]

Originally posted by ECUPirate
OK.. I've got my WC system up and running w/ the maze 3, a 1250 pump, 1/2" hose w/ 5/8" fittings almost everywhere. The hose has a very short run... I only used about three feet (low resistance). 1" ID resevoir... the only 90 degree turns in the system are 1" PVC in the resevoir. Overall, the system has very low resistance...
oh.. a Econoline heater core...

My idle temps went from 50C+ to 35C w/ the fans turned down low. (Comair Patriot 6.75" fan. ) hehehee.

ABOUT THE BLOCK... my block has the countersunk screws... Hhmmm. The bottom wasn't very flat. It seemed to sink in the middle... i.e., the edges of the bottom were taller than the very center. Also, the block needed lapping very badly. You couldn't see any reflection in the bottom. I placed 600 grit sandpaper on a table top (flat) and proceeded to sand the hell out of the block, rubbing it back and forth until my knuckles bled, literally. I went through FIVE sheets of sandpaper before the middle of the block began to get sanded (had to wear down the outside first.). Anyways, it's shiny now.
The rest of the block looked good, but this is my first water block, so I have no basis for comparison. I just wanted to share my fun w/ you...

ECU-
Next time you lap and the base is that uneven from the start back down to 250 grit and work your way up to 600. It will go faster and easier on you.
Jim