Engine cooling - Std Bravo lower unit pickup vs transom mount water pickup
 

Is a thru transom pickup similar to one of these:
https://www.summitracing.com/parts/e...gaAuciEALw_wcB

More efficient than going through my standard (not low water) bravo drive?

I'm hoping to get a little more flow. My water temp gauge creeps up to above 160 on hard long pulls. My set-up is the bravo drive to bravo seawater pump to a crossover then out the "thermostat housing" to exhaust. No re-circulation pump. No thermostat.

Thanks,

Travis

The pickup you posted is a -16 hose fitting size and would be smaller than the hose running from the transom to the sea pump, so it would be less water volume, if your running stock power the drive pickup will be ample. you may have some blockage in your current setup.

Thanks for the reply. No blockage. I checked the cooler hoses etc.

Edit: The hose on my seawater pump is 1-1/4" ID .. I though that was what i posted was a 1-1/4 pickup, I should have looked at the "AN" size.

Edit" Anyhow, the standard bravo pickup pulls through a piece of 3/4" or so hose between the gimbal and drive. It's this one:
https://www.google.com/search?q=brav...nyGUDTqaM0ZCM:

I thought eliminating it as a restriction may help since everything else in the system is 1-1/4"

Edit: forgot to mention. Not stock power. 650hp 871 blown big block..

the standard hose from sea pump to transom pickup is 1.25 ID............are you running an intercooler ?

No intercooler. But I don't think it's a tuning issue... 28 degrees locked timing. Slightly rich AF is 12.5 to 13 at cruise and 11 to 11.5 at full boost (6lbs)

You are correct the hose from transom to seawater is is 1-1/4 ID. (not 1-1/2 as I posted earlier. I checked my mistake, I edited my previous post to avoid confusion) but that's not the one I'm worried about. Its the one from the gimbal to the drive looks like it is about 3/4" ID.

Better check the fitting on your gimbal where the 1.250" hose connects. They are notorious for corroding and restricting flow.

I didn't see any issues when I had the drive off a month ago but thanks for the suggestion. It's also a freshwater boat that doesn't stay in the water.

Maybe I'm asking the wrong question here.... From what I've read a transom mount pickup can be "trimmed" to provide the appropriate amount of water pressure to the seawater pump (or strainer for those who have one).

Has anyone went to a transom mount pickup and regretted it?

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.

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?????????