Originally Posted by brian41 (Post 4269838)

I have never seen an engine COME from the 3 I listed without a circulating pump. We did testing with crossovers using temp sensors on the blocks 20 years ago in real world conditions (out on the water in a boat). Shortly after I sent back all the crossover systems and have run circulating pumps on EVERYTHING I have built since. You would chit yourself if you did the same tests. There is a lot to be said about even engine temps not to mention it allows you to build a tighter tolerance engine that lasts longer. We are currently spending a ton designing a dry sump serpentine belt that uses a circulating pump for the engines we build. In the past we have altered the old Merc efi system to work but we are looking for something better.

Originally Posted by brian41 (Post 4269838)

I have never seen an engine COME from the 3 I listed without a circulating pump. We did testing with crossovers using temp sensors on the blocks 20 years ago in real world conditions (out on the water in a boat). Shortly after I sent back all the crossover systems and have run circulating pumps on EVERYTHING I have built since. You would chit yourself if you did the same tests. There is a lot to be said about even engine temps not to mention it allows you to build a tighter tolerance engine that lasts longer. We are currently spending a ton designing a dry sump serpentine belt that uses a circulating pump for the engines we build. In the past we have altered the old Merc efi system to work but we are looking for something better.

Originally Posted by SB (Post 4269841)

I thought this was finally debunked in an infinate cooling supply system. IE: open system.

The faster the water flows, the more it will cool.

Just like air temp, add in some wind and heat is removed quicker.

Thus us in the North really only care about the Wind Chill index vs the actual air temp index.

Again, this is for open cooling systems. Not closed cooling.

Originally Posted by brian41 (Post 4269838)

I have never seen an engine COME from the 3 I listed without a circulating pump. We did testing with crossovers using temp sensors on the blocks 20 years ago in real world conditions (out on the water in a boat). Shortly after I sent back all the crossover systems and have run circulating pumps on EVERYTHING I have built since. You would chit yourself if you did the same tests. There is a lot to be said about even engine temps not to mention it allows you to build a tighter tolerance engine that lasts longer. We are currently spending a ton designing a dry sump serpentine belt that uses a circulating pump for the engines we build. In the past we have altered the old Merc efi system to work but we are looking for something better.

Originally Posted by mike tkach (Post 4269835)

it has been proven that that is incorrect.it is true in a radiator taking heat out and transfering it to the air.the more cool water you can pass through the block the more heat will be transfered to that cooling water.i,m net being a dik either,just stating facts.

Originally Posted by SB (Post 4269841)

I thought this was finally debunked in an infinite cooling supply system. IE: open system.

The faster the water flows, the more it will cool.

Just like air temp, add in some wind and heat is removed quicker.

Thus us in the North really only care about the Wind Chill index vs the actual air temp index.
Fitting example right now being in the very NE.

Again, this is for open cooling systems. Not closed cooling.

Originally Posted by adk61 (Post 4269855)

but really... what do I know, I'm just a silly crazy Canuck!! lol :7160:

Originally Posted by Black Baja (Post 4269864)

Can you squeeze a p/s pump on that setup?

Originally Posted by mike tkach (Post 4269835)

it has been proven that that is incorrect.it is true in a radiator taking heat out and transfering it to the air.the more cool water you can pass through the block the more heat will be transfered to that cooling water.i,m net being a dik either,just stating facts.