fresh water flush attachment top of block forward of TBI

19ed50

Member
Jun 1, 2021
48
Boat Info
1997 280 ss twin 350's gen 2
Engines
twin 350's w/ gen 2 drives
Seller said it was for fresh water flush instead of through raw water pick up- cant find any info about it- or how to attach a hose to it - any info greatly appreciated - ed- uploaded picture shows it in front of SR letters on manifold
 
Last edited:
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Attachment in front of SR letters
 
just loaded a pic- it should be part of original post- other wise I am not webbing correctly
 
Nope, that port is for emission testing equipment.
Another seller who has no clue. and will lead you to damaging the motor. That port goes directly into the exaust cavity and will flood the cylinders with water
 
Nope, that port is for emission testing equipment.
Another seller who has no clue. and will lead you to damaging the motor. That port goes directly into the exaust cavity and will flood the cylinders with water
We are talking about 2 different ports.
There is a fresh water flush kit with the hose attached to the 2 front bolts on the riser.

I do agree that the port directly in front of the “SR” is as you described.
 
I went by this "Attachment in front of SR letters "
that port is emissions, the setup just after thatplug is a fresh water port that should accept a garden hose connection
 
Gentlemen- thank you- I was focused on the attachment with the two bolts- but now I learned something else, regarding the small bolt on the riser- I am preparing to start the motors for the summer- can I use this port to run them or do I just insert the hose into the raw water filter- I am new to Bravo system and raw water pick up-previously owned closed cooling system with twin Alphas and earmuffs for water feed- boat is on blocks- thank you very much for your help-19ed50
 
If you are on blocks, use the muffs. It’s easier and guarantees water supply to the pump.

That flush connection is spring loaded and self closes when the hose fitting is removed.
 
gentlemen- thank you for your help- I also learned something new about small plug- can I use the flush attachment to run the engines prior to launch or insert hose into the raw water filter ( with pick up closed)- new to bravo system- old salt with twin alphas and earmuffs- thank you - 19ed50
 

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