750/550 swap cooling opinion?

[chaskaccp]

Im putting the 750 from my 750ss in my 550sx... I've got a 750 pump on it already, and the 750 has a mild port and 175psi each cylinder. I was wondering if I should try running dual cooling... I'm thinking if I have too much water pressure/flow I could always just add another pisser. Thanks for the help all.

 

[WFO Speedracer]

For a stock engine dual cooling is not necessary

 

[bored&stroked]

For a modded engine dual cooling isn't needed. Engine in my sig runs a single line in system. In 115* heat and 80* water temps. With only 93-94 octane.

 

[kevbo]

Its not a question of one or two lines, its can your engine get enough water. Make sure you have a passage at least 8mm or 5/16" from the pump to the engine. A single 7mm passage may work but is marginal.