Official 370 Sundancer thread

Thalia69 said:
Bonjour!
Je suis de Repentigny, tout près de Montréal. Mon bateau est équippé avec des 454MPI 310HP et il me semble qu'il est sous motorisé, quel serait sa vitesse de croisière et à quel RPM?
Merci et au plaisir de se reparler.
Robert
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Twin 454-310 hp in a Sea Ray 370 DA, don't make it a fast boat, however the boat gets on plane quite easily. I usually put the engines at 3000-3200 rpm and the 370 DA has no problem getting on plane. At that RPM , depending on the condition, I will cruise at 18-20 knots. At that speed the 370 DA is very stable and predictable. Quite often I put the engines at 1500-2000 rpm, 7-9 knots and relax while cruising.

If you compare it to newer boats, like a 340 DA with 8.1's , it could be underpowered. It all depends on the type of boating you want to do. If you want to go from point A to point B quite fast, the 370 DA with 454s may not be the boat to choose. You also have the option to get a 370 DA with diesel (CAT) engines. I don't know the performance, but I believe it would make it a faster boat.
 
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Thalia69 said:
Bonjour!
Je suis de Repentigny, tout près de Montréal. Mon bateau est équippé avec des 454MPI 310HP et il me semble qu'il est sous motorisé, quel serait sa vitesse de croisière et à quel RPM?
Merci et au plaisir de se reparler.
Robert
Click to expand...

Salut,

Ou est-tu a la marina de repentigny? je suis de repentigny moi aussi mais demeure a new york depuis 18ans. Moi mon 37ft a 2 moteur 454- 340 Hp et je cruise a 3200-3400 rpm. c'est dur pour moi de te dire, car mon horse power est plus fort que le tien! essaye de trouver quelqu'un sur le site avec le meme HP que ton bateau et demande lui la meme question! bonne chance
 
Big Al said:
Twin 454-310 hp in a Sea Ray 370 DA, don't make it a fast boat, however the boat gets on plane quite easily. I usually put the engines at 3000-3200 rpm and the 370 DA has no problem getting on plane. At that RPM , depending on the condition, I will cruise at 18-20 knots. .......

If you compare it to newer boats, like a 340 DA with 8.1 HO's , it could be underpowered. .....
Click to expand...

I wouldn't classify the 370DA as underpowered.....just a little Lower-powered when compared to the 340DA with 8.1 HO's.....is the 340DA available with HO 8.1s?????
 
O.K. folks I am in. Just purchased a 1994 370. No previous boat ownership other than my little 1986 Formula 206 Spider. You can all look forward to my totally rookie questions. The next 12 months are going to prove interesting!!!
 
BennyHogue said:
Salut,

Ou est-tu a la marina de repentigny? je suis de repentigny moi aussi mais demeure a new york depuis 18ans. Moi mon 37ft a 2 moteur 454- 340 Hp et je cruise a 3200-3400 rpm. c'est dur pour moi de te dire, car mon horse power est plus fort que le tien! essaye de trouver quelqu'un sur le site avec le meme HP que ton bateau et demande lui la meme question! bonne chance
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J'ai des 310 hp et j'avais répondu ;-)

Je ne savais pas qu'il y avait des Sea Ray 370 DA avec des 7.4 à 340 HP. De quelle année est ton 370 ?
 
osd9 said:
.....is the 340DA available with HO 8.1s?????
Click to expand...

You are right, I just made the correction.

Regarding the 370 being underpowered, let me state that the power of the 7.4's is quite sufficient for my type of boating. But I know some people that consider it underpowered and would go for boats with higher power to weight ratio.


By the way talking about weight, what happened to the 370 weight between 1995 and 1997 ?
- 1995 370 DA: 15,400 lbs
- 1996 370 DA: 16,000 lbs
- 1997 370 DA: 17,000 lbs
 
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quick question for 97-99 owners.
What is the make part number for the strainer basket for the A/C raw water pump?
I'm 1000 miles from the boat, and the Sea Ray parts list does not specify which strainer was used. I know it's shorter than normal for a 3/4" Perko.
 
giveortake said:
O.K. folks I am in. Just purchased a 1994 370. No previous boat ownership other than my little 1986 Formula 206 Spider. You can all look forward to my totally rookie questions. The next 12 months are going to prove interesting!!!
Click to expand...

Welcome,....., um, what's your name again?

The 370 is a great boat and that was recently confirmed after looking at the latest offerings from the various manufacturers at the Norwalk Boat Show. There's nothing that compares for the featrues and the price. No way I'm paying a half a mil for a new boat.

So tell us a little about who you are and what you plan to do in the cmoing season with your new boat.

And on't forget to check out www.370sundancer.com for lots fo pictures of these boats.

Gene
 
I have an issue with my forward emergency pump(Located near the shower drain pump under the cabin floor). Anyone who has a 97' 370DA, if they can identify the two wires that comes out the wire harness to this pump. I am not the first owner and I think some one went stupid on me when trying to rewire the pump.
How I found out that pump wasn't working properly is that the switch to the shower drain pump quit working, filling up and overflowing into the cavity next to it. The forward emergency pump comes on but will not pump the water out, also the switch is good and the drain hose is not plugged. When the pump comes on I only have 5.6 volts. The white wire ( the mystery wire ) is suppose to be the ground wire to the black wire coming out the motor. . When disconnecting the white wire from the black wire of the motor and attaching a known good ground wire the motor works properly. I traced the white wire to a wire connected strip under the console. Another white wire is connected to it with a single wire lug. I cut the two wires off, thinking that the problem was a connection issue not so. Sorry for the long explaination. I just need to know about the two wires.
 
Just purchased 1994 370 Sundancer 310 original hours brand new batteries.

Professional survey says: Exterior Average Interior above average. No significant issues other than basic every day maintenance catch up (light bulbs, anchor rope, CO detector, clean shower sump, wiper blades etc). Planning on spending all next summer making exterior look above average and have already spent plenty of hours researching these threads for the proper materials & machines to shine up the outside!

Surveyor says "recommend engines be checked by certified Merc Mechanic to include impellors, zins, tuned as needed." Always fresh water. After talking with marina service manager here is his thoughts.

You should have the impellers replaced so you know what you are starting with. Cost $300-$600. No other service provided other than to take a look at the spark plug cables and plugs to see if he would recommend replacement. Professional 60 minute Sea trial went fine. No engine issues detected though did not have mechanical survey done.

This seems like a very high cost considering my novice online searches shows the impeller kits to be $50 bucks or so.

I don't plan on going much off shore in Lake, MI as a rookie. More or less hugging shorelines in nice weather for a year or two. I have purchased slip at Grand Isle Marina in Grand Haven, MI same as where the boat has lived for the last 15 years. Does it make sense to spend the $300-$600 buck estimate for simple impeller replacement now or wait and or get additional quotes.

Priority #1, make sure she is sea worthy. Install CO detectors & re certify fire protection equipment.

Anyone have any comments for me? Total novice here..........

David
 
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David, congratulations on your new boat! The estimate range you got is pretty broad but if you can get both replaced for close to $300 it's not a bad deal. I wouldn't hesitate to have new impellers installed and all fluids and filters changed right away so you have the peace of mind knowing it's been done. Good luck, Mark
 
OK 370 owners. What is the suggested winter blocking methodology? Bow & keel? Or bow, middle & keel? Obviously more is better. What is minimal that I should suggest from my marina?

My survey individual was some what upset by the fact that the marina only blocked bow & keel on my 370 prior to purchase. Thought it was to big to not have center blocking.

Thoughts? Mine gets pulled out tomorrow and I suspect it will be bow/keel blocked unless I protest.

Thanks!

David
 
Personally, I would do three. Does the marina have an issue with using 3 sets of blocks?

Doug
 
Blocking in 2 places is done because it is easy and requires no thinking.

The blocks under the keel support the weight; the jackstands apply just enough pressure to support the hull and keep it from falling if a block underneath settles. On a 370DA, 3 blocks under the keel with 3 sets of jackstands down each side is a minimum. Over 40' you should have 4 blocks and 8 jackstands..........and, good luck getting a northern boat yard to do that for winter storage without "a discussion."

You also need to check your boats frequently to be sure the stands stay in place. When the boss says "go get me a jackstand" and your boat has 3 on each side, a yard guy will snatch one out and use it for the next boat out.
 
fwebster said:
Blocking in 2 places is done because it is easy and requires no thinking.

The blocks under the keel support the weight; the jackstands apply just enough pressure to support the hull and keep it from falling if a block underneath settles. On a 370DA, 3 blocks under the keel with 3 sets of jackstands down each side is a minimum. Over 40' you should have 4 blocks and 8 jackstands..........and, good luck getting a northern boat yard to do that for winter storage without "a discussion."

You also need to check your boats frequently to be sure the stands stay in place. When the boss says "go get me a jackstand" and your boat has 3 on each side, a yard guy will snatch one out and use it for the next boat out.
Click to expand...

Also very helpful to have the jackstands chained to each other, port to starboard. That will keep the stands from shifting and sliding out from underneath. There was some discussion that it is OSHA required although I ahven't come across that standard yet. Two years ago my 370 suffered a fall from the stands as one slipped out.

So three pairs of stands and three blocks and chain the stands.

Gene
 
RubberDuckeeToo2 said:
Also very helpful to have the jackstands chained to each other, port to starboard. That will keep the stands from shifting and sliding out from underneath. There was some discussion that it is OSHA required although I ahven't come across that standard yet. Two years ago my 370 suffered a fall from the stands as one slipped out.

So three pairs of stands and three blocks and chain the stands.

Gene
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You still went with "Rubber Ducky" when "Humpty Dumpty" was available?
 
I have a clarion and a six cd changer on my 377DA . The model year is a 97'. On the music wire diagram it shows an amp for the back speaker. Anyone that owns a boat like my and has the same music system do you know where they might have put the amp.

Thanks
Ted
 
roadkingh1 said:
I have a clarion and a six cd changer on my 377DA . The model year is a 97'. On the music wire diagram it shows an amp for the back speaker. Anyone that owns a boat like my and has the same music system do you know where they might have put the amp.

Thanks
Ted
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You mean to tell me that there no one that owns a 97 370 DA on this thread that can tell me where the amp is!
 
Ted, I didn't know I had a separate amp for the back speakers until you posted the thread! I would have to guess that if it isn't in the area of the stereo that it would probably be in the helm area. There seems to be a lot of mysterious looking electronic components lurking beneath the helm. :huh: Mark
 
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