Need some Help, New to Inboards

[Bry21317]

So I finally took the plunge, after 10 years of running my Bayliner with a Force 125, I finally upgraded.

My new Boat, pick it up tommorrow, is a 1994 19 foot Crownline with a 5.0 Chevy Engine in it. My only problem is that it has the Thru Hull Exhaust currently, which is nice, but way to loud for my 2 year old. It has the pipes coming up in the back that will take the exhaust out through the prop, I just need to figure out where to purchase the elbows to go down 180 degrees to make this fit.

The boat rides like my suburban drives on highway, kinda boring on the water, but nice to not get thrown around at all no matter what it hits on the lake. I really would like to get it on the lake, but won't until I change the exhaust.

Please help me.

 

[Gary H NC]

Re: Need some Help, New to Inboards

If you could post some pics i'm sure someone can help you.
They make all kinds and sizes of exhaust elbows..
Also here in NC is ebasicpower,they have tons of exhaust parts online..

 

[Bry21317]

Re: Need some Help, New to Inboards

I don't yet have the boat, so the Pics will have to wait until I pick it up.

Thanks for the help though. Here is a pic of the Thru Hull Exhaust:
http://www.karaoke-computers.com/bryan/newboat/exhaust.jpg

Also here is a Picture of the Boat
http://www.karaoke-computers.com/bryan/newboat/front_side.jpg

The wheels were off the trailer, so noone could steal it, the guy I am buying it form was paranoid.

The engine is a Mercruiser, which from reading is a chevy, with extra itemes added.

 

[Don S]

Re: Need some Help, New to Inboards

One thing you need to understand before you go buying parts, is that the engine will have to come out to install a Y pipe that attaches to the transom shield that pushes the exhaust out thru the prop. The exhaust manifolds and risers will not change, but there will be a couple elbows and 4 new hoses that hook up the risers on your engine to the Y pipe.

 

[sabastianunf]

Re: Need some Help, New to Inboards

I would just buy some ear plugs for your daughter - that boat looks sweet and probably sound bad ***** with the exhaust the way it is - why mess with a good thing?

 

[Zackman]

Re: Need some Help, New to Inboards

You may want to consider converting it over to "Captain Call", so you can run with the exhaust thru the prop when tender ears are aboard and then go thru transom when only older ears are aboard.

Here is a link that sells some of the components to give you an idea of what's available.

http://www.marineparts.com/mpf/mpf324.aspx

You could also add mufflers to the current exhaust (see silence tips at the bottom of the reference web page above.)

 

[f_inscreenname]

Re: Need some Help, New to Inboards

It has the pipes coming up in the back that will take the exhaust out through the prop, I just need to figure out where to purchase the elbows to go down 180 degrees to make this fit.

Like said before, they are easy to find. You may even want to check eBay if you have to do it.
That being said, why would you want to? Its a nice boat and a two year old isn't going to be on the boat that long before they are 4 and then they will think its cool

 

[Don S]

Re: Need some Help, New to Inboards

It has the pipes coming up in the back that will take the exhaust out through the prop, I just need to figure out where to purchase the elbows to go down 180 degrees to make this fit.

Amazing, I went back three times after screenname posted that and still couldn't find it in the original post....... Then it was there, DUH, I just kept overlooking it.

 

[SuperNova]

Re: Need some Help, New to Inboards

It has the pipes coming up in the back that will take the exhaust out through the prop, I just need to figure out where to purchase the elbows to go down 180 degrees to make this fit.

"One thing you need to understand before you go buying parts, is that the engine will have to come out to install a Y pipe that attaches to the transom shield that pushes the exhaust out thru the prop."-Don S. need to read the original post closer.


I would agree with zachman--go with the captains call or the corsa quick-n-quiet or something along those lines that way you can have the best of both worlds and not have to repair two 3" holes in your transom.
--
Stan

 

[Zackman]

Re: Need some Help, New to Inboards

I know this wasn't part of your original post and I debated if I should post this or not, but here goes...

I have a 99 Crownline, so I know a little about the history of these boats. Until 97, Crownline did not use marine grade plywood in the transom, flooring, or stringers. A few people have experienced rot of the plywood in the transom and flooring, particularly with boats that were kept outdoors and exposed to the weather. The floors are a concern, since most were made with the carpet attached to the plywood flooring. The carpet would help retain moisture and the plywood would rot.

Hopefully, you were aware of this and have checked the flooring and transom thoroughly.

 

[Gary H NC]

Re: Need some Help, New to Inboards

Sweet looking boat! The ear plugs would be the way to go..When they get a little older they will love it! i like that stainless steel transom! Very cool..

 

[j442w30]

Re: Need some Help, New to Inboards

You could add some inline mufflers to cut down on the noise a bit. This would be easier than pulling the engine to add a Y-Pipe. Unless you like the sound that much, then I would recommend a silent choice system like the others mentioned.

 

[Bry21317]

Re: Need some Help, New to Inboards

The Y Pipe is already in the boat. It is just capped off about 8 inches below the pipes that go from the Manifold to the Straight pipes out the back.

I am not going to take out the Exhuast pipes sticking through the transom, just cap them off. This boat is LOUD. At speed is is very quiet, but below 20mph and in the no wake zones, it hurts your ears. It sounds like 4 harleys all with Straight pipes sitting there revving their engines.

I like loud, but this is way to loud.

The boat was Meticuosly taken care of, and the floor is hard as a rock. The boat is a 94, but looks better than some 2004 models I had looked at. The guy was a mechanic, and took extremely good care of it. Even looking in the valve covers where you add oil, it was the cleanest engine I have ever seen, I have never seen an engine that had no Carbon build up in there or any other gunk. It was spotless and the oil was perfectly gold, so I am not worried about it being torn up or anything. Also, think about the boat I am upgrading from, a Bayline, so nothing can be worse than that.

There was one area of floor in the back beside the engines that he had replaced, and its nice and was professionaly done, and you can tell it was. This thing was a deal, thats why I couldn't pass up the price.

The captains call would be cool, but thats pricey, like $1500 from what I have seen, so for now I am going to just get the 90 degree elbows to run the pipes down to connect into the Y pipe, then I will cap off the straight pipes that go through the transom on the inside, this way it still has the look, just not the sound.

I hope to pick the boat up at lunchtime today, or later this afternoon. I will then beable to take some pictures of what I mean.

Thanks for all the help. I will try to get the pics as soon as I can, so I can order the parts I will need.

Bryan

 

[Don S]

Re: Need some Help, New to Inboards

Basically, you will need items 1 thru (and including) 6.

Click here

 

[f_inscreenname]

Re: Need some Help, New to Inboards

If you have room you could put a diverter on there. That way you would have the best of both worlds.​

 

[180shabah]

Re: Need some Help, New to Inboards

Slightly OT here, but you will also need to look at your anodes, the one right above the prop looks like it has been painted, making it useless.

 

[I/O WALDO]

Re: Need some Help, New to Inboards

Quicksilver sells a set of muffled 4" tips,very quiet(I have a set on my 502efi mag)and non-restrictive.

 

[Bry21317]

Re: Need some Help, New to Inboards

Ok so I got the boat yesterday, and got to take some pics inside of the engine.

Here are the pics of the manifold and the capped off Y tube.

Driver Side tube going out through the hull, showing top of Y tube below this.
http://www.karaoke-computers.com/bryan/newboat/exhaust-1.jpg

Passenger Side Tube going out through the hull, on top of the top of the Y Pipe.
http://www.karaoke-computers.com/bryan/newboat/exhaust-2.jpg

Passenger side Manifold with Straight tube attached.
http://www.karaoke-computers.com/bryan/newboat/exhaust-manifold-2.jpg

Driver Side Manifold
http://www.karaoke-computers.com/bryan/newboat/exhaust-manifold-1.jpg

Another Pic of the driver Side Manifold
http://www.karaoke-computers.com/bryan/newboat/exhaust-manifold-3.jpg

Also, the blower hose is not connected, it looks like it was torn. The blower works, but is just blowing the fumes back into the engine.

I am new to inboards, so this maybe a dumb question, but I want to be safe. Do both vents get hooked up to the Blower or only one? I take it that only one would be hooked up, such as on this boat, the one on the passenger side as it comes close to the blower, before it ripped. I would then guess the other side would be as an inlet for air to come into the engine compartment. Am I correct, or do both need to be blowing out. There are also large pockets in the walls of this boat that suck air into the compartment, from what I was told by the seller, and then blows it out a vent in the back of the boat above the swim deck.

Thanks for all the help.


On the Muffled tips, how large of a difference would they make?

Bryan

 

[Haut Medoc]

Re: Need some Help, New to Inboards

You are correct in your assumption only one vent for exhaust........
​

 

[180shabah]

Re: Need some Help, New to Inboards

Yup, the blower "sucks" from the bottom of the bilge, and blows out through the vent.

If the hoses are damaged or disconnected, the blower will not be able to extract the gas fumes properly. This could lead to a fire.