New Volvo Q

[Tafflad]

Boat arriving this week .... with Volvo 280 duoprop
Never owned a Volvo I/O ... what is the process for flushing after use.
Just run it on muffs as for Mercruiser or is there anything special for Volvo’s

Due to restrictions won’t get water trial, just having boat delivered .. so handover not as normal.

 

[QBhoy]

The right fitting muffs work half the time. Most useful way is to stick a hose into the intake hose of the pump on engine.

 

[muc]

The right fitting muffs work half the time. Most useful way is to stick a hose into the intake hose of the pump on engine.

I would not follow this advice with a new engine.
I would read the operators manual that comes with your new engine. If you want to get a copy now, they are a free download. https://www.volvopenta.com/marineleisure/en-en/for-owners.html I'm not from Wales (just wish I was) so you may need to Google "Volvo Penta operators manual"
If you want to use muffs, I suggest you ask your dealer what they use. You may find that they don't use muffs because this package should come with 2 flush connections. One on the engine and one on the transom. They work pretty good as long as you read and follow the instructions.

 

[QBhoy]

I would not follow this advice with a new engine.
I would read the operators manual that comes with your new engine. If you want to get a copy now, they are a free download. https://www.volvopenta.com/marineleisure/en-en/for-owners.html I'm not from Wales (just wish I was) so you may need to Google "Volvo Penta operators manual"
If you want to use muffs, I suggest you ask your dealer what they use. You may find that they don't use muffs because this package should come with 2 flush connections. One on the engine and one on the transom. They work pretty good as long as you read and follow the instructions.

Never seen flushing connections on an engine and drive package as old as a 280 Muc. The hose into the intake is a well practised technique on these old things, depending on engine I suppose.
no substitute for it being in the water though. These 280 and 290 drives aren’t known for picking up water well, out the water. I had very limited success with mine taking water up from muffs. Only one type I know of thay did it successfully and even then, not all of the time. If I had to run it out the water..it was only ever the hose into the intake pipe that worked well every time.

 

[muc]

Never seen flushing connections on an engine and drive package as old as a 280 Muc. The hose into the intake is a well practised technique on these old things, depending on engine I suppose.
no substitute for it being in the water though. These 280 and 290 drives aren’t known for picking up water well, out the water. I had very limited success with mine taking water up from muffs. Only one type I know of thay did it successfully and even then, not all of the time. If I had to run it out the water..it was only ever the hose into the intake pipe that worked well every time.

Sorry, guessing I got him confused with the guy who was asking lots of questions about a new boat he had ordered with Volvo Penta V6-280 power in it.

Surprisingly in my 30 years as a boat mechanic. I’ve yet to see a trained tech stick a hose up the intake pipe. Not saying it wouldn’t work, just haven’t seen it. We do use Volvo’s recommendations of placing the intake hose in a bucket and keeping the bucket full or sometimes using adapters. But usually we just use the correct muffs and a plug in that hole in the bottom of the bullet. Haven’t had a issue with that. Is it possible you might have an air leak somewhere in your boat?


P.S. when you buy on of those small tubes of silicone or other caulk. That plastic thing that comes with it, works really good for plugging the hole. As long as you don’t cut the tip off.

 

[QBhoy]

Sorry, guessing I got him confused with the guy who was asking lots of questions about a new boat he had ordered with Volvo Penta V6-280 power in it.

Surprisingly in my 30 years as a boat mechanic. I’ve yet to see a trained tech stick a hose up the intake pipe. Not saying it wouldn’t work, just haven’t seen it. We do use Volvo’s recommendations of placing the intake hose in a bucket and keeping the bucket full or sometimes using adapters. But usually we just use the correct muffs and a plug in that hole in the bottom of the bullet. Haven’t had a issue with that. Is it possible you might have an air leak somewhere in your boat?

Ah. Fair play Muc. You might be right on him meaning a 280hp engine haha. Perhaps I read or picked him up wrong. Thinking that he meant a 280 drive.
I only ever used a hose with my VP AQ205 and 290DP and rarely at that. I do know that the local merc dealer now no longer bothers with the muffs on any bravo drive anymore, in favour of the hose into the pipe idea. I have a set of quicksilver muffs that seem to work well on bravo, 290 (last time I tried) and of course alpha and large gearcase outboards. Only one I’ve had that does them all well enough.

 

[muc]

https://www.iboats.com/shop/moeller-motor-flusher-volvo.htmlThis is what every shop I’ve worked in uses for the old Volvo’s.

Mercury makes muffs that have a S.S. Rod that goes through the gear case and holds the two half’s together. Seals great and can’t fall off. iBOATS doesn’t sell them so don’t think I should post a link.

I find it it hard to believe that any shop would disconnect the intake hose to run a Bravo. That’s way to much work. Somebody’s pulling your leg.

 

[QBhoy]

https://www.iboats.com/shop/moeller-motor-flusher-volvo.htmlThis is what every shop I’ve worked in uses for the old Volvo’s.

Mercury makes muffs that have a S.S. Rod that goes through the gear case and holds the two half’s together. Seals great and can’t fall off. iBOATS doesn’t sell them so don’t think I should post a link.

I find it it hard to believe that any shop would disconnect the intake hose to run a Bravo. That’s way to much work. Somebody’s pulling your leg.

Haha. No legs pulled here. I’ve seen it in person. Dead easy to do sure.

 

[Tafflad]

OK .. not sure if I confused people ..... I do have a Volco 280c DPS duoprop ( and I did ask questions here to help decide on choosing it)
There is an inlet flush home attached in transom bracket, it unclips and there is a threaded hose connection on the end .... so that is purpose-designed, no need to 'disconnect the intake hose'
There is another in engine bay.

My question is running of muffs is the way I have always run the engine at home, and to flush out, is there any reason not to still use muffs
The answer seems to be - use muffs.

the 2 nose connections seem surplus over engineering.

 

[mt2006]

I think the manual says to use either of the flush ports. Why would you choose to use the muffs?

 

[Tafflad]

Because I have them is the simple answer. Used muffs on every previous outboard and inboard I have had ..... so quick & easy to clip on.
Just trying to find out if there is any reason not to use muffs - Afterall that is how water gest in during use.

 

[muc]

Because I have them is the simple answer. Used muffs on every previous outboard and inboard I have had ..... so quick & easy to clip on.
Just trying to find out if there is any reason not to use muffs - Afterall that is how water gest in during use.

Maybe things are different in Wales, but doesn’t your hose also have a screw on end that matches the fitting on your transom?

Muffs have a downside. They can be used wrong or slip off during use. Volvo has found that some people have trouble using them. So in a effort to “idiot proof” flushing the engine. They have come up with a better way. It is a better method when used as directed by the owners manual. You might want to give it a try and see if you like it better.

P.S. Have you noticed that Volvo doesn’t sell muffs, unlike their competition?

 

[mt2006]

Just trying to find out if there is any reason not to use muffs - Afterall that is how water gest in during use.

I wonder if the impeller being so far away from where the water intake is makes using the muffs riskier? Remember that the impeller is mounted on the front of the engine on a VP. When you put the hose on one of the flush ports and turn on the water you know there is enough pressure to prevent a dry start. Are you certain of this when using the muffs???

 

[Tafflad]

"Maybe things are different in Wales, but doesn’t your hose also have a screw on end that matches the fitting on your transom?"

Nope ... hoses here have Hoselock push fit connectors. Hence been using muffs ...

"When you put the hose on one of the flush ports and turn on the water you know there is enough pressure to prevent a dry start."
I can see the water coming out - before I start engine.

Be interesting to see what a Volvo dealer uses.

 

[QBhoy]

Hi taff lad. Agree. We have a different hose fitting to the guys over there. But all is not lost. You can buy an adapter cheap on eBay.

 

[Tafflad]

I could for sure - just wanted to understand if there was any reason not to use muffs - same water supply, in terms of volume & pressure. I have the double muffs with hose feed to each side.