yep,i had to long of a day to get into it tonite!

Not a debate. Generalized true statement. If you take a look at some of the newer oem engines they actually put a temp sensor in the cylinder head (dry). If you want to fight detonation in an engine focus on keeping the piston crown, exhaust valve and spark plug cool. None of which are cooled by water running through the engine. These are what get the "Black Death" started.

so the water flowing through the head does nothing for cooling the combustion chamber?

Absolutely, but the exhaust valve and spark plug are 3 times hotter and air cooled. The reason motors p'ing when they are overheated is because they get extremely hot and the cylinder transfers it's heat into the incoming intake charge. The intake charge needs heat from the cylinder to vaporize properly b4 combustion. That's why motors make more power above 180 degrees.

tell that to the pro stock guys,maybe they will start running 180 deg water instead of 100 deg.

Didn't know they ran water in the block? All the drag stuff I've seen the last few years. Run about a cup full of water through the heads and that's it.

I believe this thread had to do with a forced induction set up, that changes the manner in which the cyl heating takes place and the atomization take place, not the same as a N/A engine. So I would say to the OP watch the temps closely both water and oil, then adjust accordingly, I have had great success in the past with blower set ups using different sized restrictors to get the temps I wanted or just run wide open.

i don,t recall saying they run water through the block,feel free to quote it if i did.

Guess you missed the question mark. And I highly doubt they run at 100 degrees. I can tell you a much larger motor with heads that have a "prostock" port on them made by the same guy that owns prostock cylinder heads will never make it down the track on nitrous with 100 degree temperature.

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