Volvo V8 380 EVC Catalyst - Winterizing

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Volvo V8 380 EVC Catalyst - Winterizing

Postby Catch22 » Sun Jun 24, 2018 10:29 am

All - Have a 2016 Volvo V8 380 EVC Catalyst motor, which is an enclosed cooling system. With this type of motor, does anyone know what needs to be drained of fresh water when winterizing? Heads, manifolds, intake hoses/impeller, heat exchanger? Appreciate any info that can be provided. (PS - don't worry not winterizing in the middle of the summer, but think I can do it myself this fall. However, don't know much about fully enclosed motors)

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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby lg260ss » Sun Jun 24, 2018 1:52 pm

All you have to do is drain the heat exchanger and raw water pump. You’re manual gives step by step instructions of how to do this. The 6.0l is fully closed cooled so there is no draining the manifolds.
Mechanically, it is very easy to do. Unfortunately, Regal gives very poor access to the front of the engine which Makes the job much tougher than it should be.
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby gofast24 » Mon Jun 25, 2018 10:55 am

interesting that the 6.0 L has fresh water cooled manifolds, are the risers sea water cooled? Fresh water cooling the exhaust manifolds has to have something to do with the catalysts, if so really big heat load on the heat exchanger! Our 4160 has sea water cooled manifolds and risers. Does the OP mean raw/sea water cooled vs. fresh water cooled he indicated needing to be drained for winter?
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby Chris_in_Texas » Mon Jun 25, 2018 7:04 pm

No the full exhaust system is closed on this engine, which actually is a big plus. The exhaust system will last just as long as the engine. I think its the only block to be a full closed loop cooled engine including the exhaust system. My cat based engines were raw water cooled on the 5.7L.
Thanks, Chris

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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby Catch22 » Wed Jun 27, 2018 9:25 am

Thanks for the info!! - Steve
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby gofast24 » Wed Jun 27, 2018 11:06 am

Chris_in_Texas wrote:No the full exhaust system is closed on this engine, which actually is a big plus. The exhaust system will last just as long as the engine. I think its the only block to be a full closed loop cooled engine including the exhaust system. My cat based engines were raw water cooled on the 5.7L.

Makes sense about the manifolds and risers being part of the closed cooling system and will not rust/fail as a old style sea water cooled system were. But, has to be a big thermal load on the sea water heat exchanger and cooling system in general. When still working a few years back all of our over 500 kWe gaseous fueled gen set engines had fully jacket water cooled exhaust manifolds, turbo's and mufflers, they were part of a TEP (total energy package) that used the exhaust heat thru a external heat exchanger to provide heat and electricity for larger applications. We had systems that were over 92% efficient using the engine heat and electric output in combination to provide that overall electrical/thermal efficiency. The 8% lost was the engine exhaust heat that couldn't be economically recovered.
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby gofast24 » Wed Jun 27, 2018 11:07 am

Chris_in_Texas wrote:No the full exhaust system is closed on this engine, which actually is a big plus. The exhaust system will last just as long as the engine. I think its the only block to be a full closed loop cooled engine including the exhaust system. My cat based engines were raw water cooled on the 5.7L.

Makes sense about the manifolds and risers being part of the closed cooling system and will not rust/fail as a old style sea water cooled system were. But, has to be a big thermal load on the sea water heat exchanger and cooling system in general. When still working a few years back all of our over 500 kWe gaseous fueled gen set engines had fully jacket water cooled exhaust manifolds, turbo's and mufflers, they were part of a TEP (total energy package) that used the exhaust heat thru a external heat exchanger to provide heat and electricity for larger applications. We had systems that were over 92% efficient using the engine heat and electric output in combination to provide that overall electrical/thermal efficiency. The 8% lost was the engine exhaust heat that couldn't be economically recovered.
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby Catch22 » Mon Nov 12, 2018 9:26 am

Well I attempted the wiinterization of my motor yesterday. I could not get the cap (which is on the bottom) off the heat exchanger. My choice and use of curse words created long distinguished list. I’m certain the nut was lose, as I could feel the space between it and the cap. I was trying to use a screw driver to loosen the cap, however, that didn’t work. Thus my question is, is it typically that difficult to lose the cap? Does it unscrew maybe?

I didn’t want to tear up the seal that goes between the cap and the unit, so I wasn’t as aggressive with it as maybe I could’ve been. And since there wasn’t room to crawl into the engine compartment, I was doing everything blind from the top of the motor.

Any thoughts?

Thanks,
Steve
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby gofast24 » Wed Nov 14, 2018 12:13 pm

Catch22 wrote:Well I attempted the wiinterization of my motor yesterday. I could not get the cap (which is on the bottom) off the heat exchanger. My choice and use of curse words created long distinguished list. I’m certain the nut was lose, as I could feel the space between it and the cap. I was trying to use a screw driver to loosen the cap, however, that didn’t work. Thus my question is, is it typically that difficult to lose the cap? Does it unscrew maybe?

I didn’t want to tear up the seal that goes between the cap and the unit, so I wasn’t as aggressive with it as maybe I could’ve been. And since there wasn’t room to crawl into the engine compartment, I was doing everything blind from the top of the motor.

Any thoughts?

Thanks,
Steve

My thoughts = The minimum VP or Regal could have done is provide a 3/4" or so drain plug on the "bottom" of the sea water heat exchanger, not have to unscrew a
big 4" or so cap/housing? If it is a large "cap" I would hope that it woud have a "O" ring seal that you would have to put a little force to get the cap out of the HE housing! If so, when you replace the "cap " u s e a little marine Teflon lube on the o ring or thread, how ever it is fastened to the bottom of the HE
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby Catch22 » Wed Nov 14, 2018 12:43 pm

I had my regular mechanic come out to winterize after my failed effort. Found out that he drained the 3/4” plug that was at the bottom of the HE (as mentioned in the response above). Thus what he did is drain it where the anode is (or at least that is what owners manual says). What troubles me is the owners manual that I have specifically states, and diagrams, the removal of the bottom plate. So, the HE referred to in my Owners Manual does not describe the HE I have. I trust my mechanic as he has always done good work for me, so I’m not worried about that. I think this is a lesson for all those women who say we men do no follow directions. I did, and look where it got me!!! :lol:

Yes, there was a seal between the plate and the body of the HE. Since I never got it to budge, I will simply tighten the bolt and not worry about lubing it.

Appreciate the feedback!
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby aviator1 » Thu Nov 15, 2018 7:46 am

Not sure if your motor is the same as the 200 with the easy drain system. On mine everything that has sea water is tied to the easy drain manifold so pushing the handle in drains everything.
To be safe I emailed Volvo and the confirmed.
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby Catch22 » Thu Nov 15, 2018 11:41 am

aviator1 wrote:Not sure if your motor is the same as the 200 with the easy drain system. On mine everything that has sea water is tied to the easy drain manifold so pushing the handle in drains everything.
To be safe I emailed Volvo and the confirmed.



I do not have the easy drain system. I’ve seen it and wish I did have it!
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby Mhook1 » Thu Nov 15, 2018 8:12 pm

The top and bottom caps can be removed. There is a thick rubber seal at both ends. They are probably just stuck. I tapped the edge of the caps with a screwdriver and hammer and they come right off. I take both sides off so I can flush any seaweed out of the many honey comb tubes. I suggest if you ever do it to just loosen the aircraft nut 1st, not take it off all the way until you get the end caps free. Then remove them all the way.
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Re: Volvo V8 380 EVC Catalyst - Winterizing

Postby gofast24 » Fri Nov 16, 2018 12:43 pm

Mhook1 wrote:The top and bottom caps can be removed. There is a thick rubber seal at both ends. They are probably just stuck. I tapped the edge of the caps with a screwdriver and hammer and they come right off. I take both sides off so I can flush any seaweed out of the many honey comb tubes. I suggest if you ever do it to just loosen the aircraft nut 1st, not take it off all the way until you get the end caps free. Then remove them all the way.

If you have "sea weeds" in the HE tubes I recommend you check/clean the sea water strainers! They have to be full of crud as what they didn't filter out got to your heat exchanger sea water inlet side.
Also, dont like hearing you have to use a screw drive and hammer on anything on your cooling system:(
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