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Zer0 · 04-22-2018, 07:45 PM

Could have cavitation in the pump at higher rpm, or to high of flow for proper heat exchange with the smaller radiator. You could try slowing down the water pump speed with a different size pully.

04-22-2018, 07:45 PM	#2
Zer0 Senior Member Join Date: Sep 2015 Drives: 2015 frs Location: Ca Posts: 511 Thanks: 426 Thanked 196 Times in 148 Posts Mentioned: 5 Post(s)	Could have cavitation in the pump at higher rpm, or to high of flow for proper heat exchange with the smaller radiator. You could try slowing down the water pump speed with a different size pully.