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-   Do It Yourself, Boating on a Budget (https://www.offshoreonly.com/forums/do-yourself-boating-budget-249/)
-   -   Engine cooling - Std Bravo lower unit pickup vs transom mount water pickup (https://www.offshoreonly.com/forums/do-yourself-boating-budget/361946-engine-cooling-std-bravo-lower-unit-pickup-vs-transom-mount-water-pickup.html)

1 MAIDEN AMERICA 07-23-2019 12:20 PM
160* sounds fine to me

payuppsucker 07-23-2019 12:58 PM
Originally Posted by flashgordon (Post 4698174)
wow ,,this is all new to me
i have transom water pickup
goes to strainer , then oil coolers, then pump to motor.
i have never noticed any issues, but my boat is not a 100 mph boat...
should i be considering adding a relief valve?????????
Do you have a water pressure gauge?

89Force235 07-23-2019 01:01 PM
Originally Posted by 1 MAIDEN AMERICA (Post 4698186)
160* sounds fine to me
It keeps going... I haven't pushed it any farther to see when/if it'll stop

89Force235 07-23-2019 01:05 PM
Originally Posted by payuppsucker (Post 4698151)
I've never converted from a drive source to a transom style pickup but most of my boats have had transom pickups. If you go with a transom mounted pickup you will need to add a pressure relief valve between the pick up and the pump to bleed off some of the water when running at speed.
Hardin also makes an adjustable pickup.
I read some place that the relief is not necessary as long as you've dialed in the pickup with a gauge and you're not flying the boat out of the water. The author noted the spikes in pressure are from re-entry.

Four what its worth my boat doesn't fly but does run about 75mph on the top end.

flashgordon 07-23-2019 01:17 PM
Originally Posted by payuppsucker (Post 4698192)
Do you have a water pressure gauge?
no i dont have water pressure gauge,,,,
my boat is NOW closed coolant system..
dont know if that makes any difference...
but just posting that..
motors use to run 140-160 no thermostats

payuppsucker 07-24-2019 07:31 AM
Originally Posted by flashgordon (Post 4698198)
no i dont have water pressure gauge,,,,
my boat is NOW closed coolant system..
dont know if that makes any difference...
but just posting that..
motors use to run 140-160 no thermostats
You should be good to go without the regulator.

green lightning 07-24-2019 08:01 AM
I converted my boat over to transom adjustable pick ups and love them , The only problem I encountered was breaking the welds off the pick ups so I welded the pick ups after I checked the pressure and then they were good. Then when I added two stage sea water pumps and intercoolers I did not have enough pressure at speed so I fish mouthed the bottom of the boat right in front of the pick ups and I have 15-17lbs of pressure at a little over 100mph engines run nice and cool.

Griff 07-24-2019 01:08 PM
Running only 28* of timing will create more heat as well.

89Force235 07-24-2019 03:22 PM
Originally Posted by green lightning (Post 4698338)
I converted my boat over to transom adjustable pick ups and love them , The only problem I encountered was breaking the welds off the pick ups so I welded the pick ups after I checked the pressure and then they were good. Then when I added two stage sea water pumps and intercoolers I did not have enough pressure at speed so I fish mouthed the bottom of the boat right in front of the pick ups and I have 15-17lbs of pressure at a little over 100mph engines run nice and cool.
Thank you for the post! Why did you add the two stage pumps? Not enough volume to cool the boat?

flashgordon 07-24-2019 03:23 PM
Originally Posted by payuppsucker (Post 4698332)
You should be good to go without the regulator.
thanks for info ''payupsucker............""


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