annie
New Member
- Feb 11, 2010
- 338
- Boat Info
- 1997 Genesis 320 Euro, 8120 Navman GPS,
- Engines
- twin 150hp Volvos on DP legs
Hi All,
Its been a while since I posted... Been busy working on and enjoying the new boat.
This is so simple and cheap I thought I would share.
It is basically a 1 1/4" ' T ' fitting reduced down to take a shut-off valve and a domestic 'click on' hose fitting.
If you go down to your plumbing store (plastic Hansen fittings for the NZ guys) with a photo I'm sure they will be able to make it up for you.
The bonus is you don't need to run your engine and there are no sea-cocks to add or forget to turn on!
About 1/4 of the fresh water from the hose at full snot back-flushes the raw water pump and leg while the rest flushes your heat exchanger, intercooler and exhaust elbow. It then falls down the exhaust and pushes fresh water all the way out the exhaust.
Turn off the tap, disconnect and your done.
I fitted this about 5 weekends ago and have well and truly tested it. The exhaust tube is 4" and easily handles the water coming out the elbow.
I rinse my engines for a couple of minutes after most outings and especially when locking up (I'm in a marina but those who are moored could adapt the transom shower hose), it works well and will ensure the raw water system stays trouble free for a long time and the exhaust elbows will last longer.
Before:
View attachment 24703
After:
View attachment 24702View attachment 24701
Its been a while since I posted... Been busy working on and enjoying the new boat.
This is so simple and cheap I thought I would share.
It is basically a 1 1/4" ' T ' fitting reduced down to take a shut-off valve and a domestic 'click on' hose fitting.
If you go down to your plumbing store (plastic Hansen fittings for the NZ guys) with a photo I'm sure they will be able to make it up for you.
The bonus is you don't need to run your engine and there are no sea-cocks to add or forget to turn on!
About 1/4 of the fresh water from the hose at full snot back-flushes the raw water pump and leg while the rest flushes your heat exchanger, intercooler and exhaust elbow. It then falls down the exhaust and pushes fresh water all the way out the exhaust.
Turn off the tap, disconnect and your done.
I fitted this about 5 weekends ago and have well and truly tested it. The exhaust tube is 4" and easily handles the water coming out the elbow.
I rinse my engines for a couple of minutes after most outings and especially when locking up (I'm in a marina but those who are moored could adapt the transom shower hose), it works well and will ensure the raw water system stays trouble free for a long time and the exhaust elbows will last longer.
Before:
View attachment 24703
After:
View attachment 24702View attachment 24701