Smoothsix

what is optimum water pressure at idle through wide open I am seeing over 30 psi at 6000 rpm

Smoothsix

ttt

Smoothsix

It is a 598 na, no sea strainer and I am bleading off the pressure out of the back of the intake through 2 #10 lines into 1 #14 through the transom. Oh yeah imco lower and more like 35 psi over 100mph

Griff

35psi or more is starting to ask for problems. 20-25psi at WOT is about perfect. Idle usually barely reads anything on the gauge.

Smoothsix

What should be my next move to try to reduce the psi

Smoothsix

I set up a temp gauge and had my passenger watch it we went 106 mph at 6300 rpm and he said the psi gauge hit 35 psi

Smoothsix

Thanks I was just trying a 30 b1 think I will try a 32, with no sea strainer where should I install the relief valve ?

Smoothsix

I used a block drain for the gauge, I have no oil cooler we run on pretty small lakes and oil temp has never been an issue. So I should install a t after the sea water pump with a relief valve to dump overboard, what size line ? I have one of those brass ones from teage

Smoothsix

Sorry thats what I meant was what size line for the dump. WILL The water pressure read less at the t stat housing?

Smoothsix

Thanks I will set it up and try it this weekend: