Official 370 Sundancer thread

TheWolfTC said:
Hi Gene,
Your original prop size is interesting. Mine are 18x21 three blades which is what is listed in the Sea Ray 1996 parts manual. I cant say that I can complain about the overall performance but we always could do better...lol My top end loaded with fuel in calm waters is about 34 mph. The torque around the docks could be better, although I am used to how it handles now and compensate with a little more throttle when needed.

If I were to go to a 4 blade would you think I would still be at 18" but I would drop down to 20"?? (Using your rule of thumb listed in an earlier post)
Thanks
Bill
Click to expand...

According to my parts manual, the 18 x 21" props were specs for the smaller gas engine (310 hp) and the 18 x 22" were spec for the larger gas engine (380 hp). They also list 20 x 25" for diesel.
 
DaFish said:
According to my parts manual, the 18 x 21" props were specs for the smaller gas engine (310 hp) and the 18 x 22" were spec for the larger gas engine (380 hp). They also list 20 x 25" for diesel.
Click to expand...

Thanks Gene...I must have the smaller engines. They are listed as 7.4L MPI MIE Gen V.
I wonder if I would see any improvement from 4 blade props with the smaller engines? And would I have to cut down the pitch down to 18x20?
 
Does anyone know how to get this part off? The vinyl fabric mount behind the speaker. I can't see or feel any nuts on the back side to remove. I even took pictures to see what was holding it on and I am stumped. I have had just about every darn part of this boat apart over the past 4 years but I am stumped by these.

http://i1050.photobucket.com/albums/s412/Thewolftc/Speaker bolster/IMG_7498_zpshxdw2nfc.jpg
I cant seem to upload the image directly to the email so I had to use Photobucket...(Unless of course it is visible after I click post reply...lol)

Z
 
DaFish said:
According to my parts manual, the 18 x 21" props were specs for the smaller gas engine (310 hp) and the 18 x 22" were spec for the larger gas engine (380 hp). They also list 20 x 25" for diesel.
Click to expand...

I would talk to a prop shop. My "rule" was only based on what I have read on various sites including this one. Your engines are also carbuerated, I believe, and that might make a difference not only in HP, but also torque. Too much in pitch might cost you a pair of transmissions, if not engines from a broken rod.

My experience was good, but YMMV.

Gene
 
TheWolfTC said:
Does anyone know how to get this part off? The vinyl fabric mount behind the speaker. I can't see or feel any nuts on the back side to remove. I even took pictures to see what was holding it on and I am stumped. I have had just about every darn part of this boat apart over the past 4 years but I am stumped by these.

http://i1050.photobucket.com/albums/s412/Thewolftc/Speaker%20bolster/IMG_7498_zpshxdw2nfc.jpg
I cant seem to upload the image directly to the email so I had to use Photobucket...(Unless of course it is visible after I click post reply...lol)

Z
Click to expand...

I removed that panel on the starboard side some years ago to snake a new radar cable. My memory was that after you remove the speaker, there is one bolt with a nut towards the aft and the forward end of the panel is held on by virtue of a "wedge" in a slot. So you take the speaker out, remove the nut from the bolt at the aft end father panel and then slide the panel rear to the aft and it comes right out.

Again YMMV.

Gene
 
Re Props......

The gentleman that bought his new ones on ebay got one heck of a smoking deal....wow - nicely done.

I too stayed with 18" diameter per the spec, and my new ones are 18 pitch with a .105 cup (heavy) and they're amazing. Keep in mind I boat at 5700' elevation.

I was amazed at the difference in the technology and sheer surface area of the new ones as compared to the old, and I'm guessing - original ones. The new ones are nibrals.

You can see the difference fairly well here in blade surface area - and yes - both old and new are 18" props.

Prop%20install_zpsdeyxpjrm.jpg


Prop%20Acme%2018%20x%2018%20high%20cup_zps4kazswa7.jpg
 
I'm looking to buy a 370 Sundancer. I've heard that keeping gas engines running can be a chore if the boat sits routinely for several weeks. Is there any validity to this concern? If so, what steps are needed to avoid big maintinance issues?
 
Dpmccar said:
I'm looking to buy a 370 Sundancer. I've heard that keeping gas engines running can be a chore if the boat sits routinely for several weeks. Is there any validity to this concern? If so, what steps are needed to avoid big maintinance issues?
Click to expand...

I think the main issue with a gas engine sitting idly is the ethanol problem. If you have carbs, the gasoline sitting in the carb gets gummy quick and will result in a fouled engine. The problem is far less prevalent, if not non-existent, with fuel injection. The Admiral is not crazy about the open water so I don't get a chance to go out much. My old boat was carbuerated and constantly had running problems due to sitting for a number of weeks. When it came time to upsize, I made sure the 370 of my choice had fuel injection. Even if it sits for a while, those engines fire up every time.

You also should make sure that your fuel is properly stabilized. Diesel has a similar problem with algae, but the fuel can sit for a longer period of time.

Gene
 
So i have removed the old windshield screw covers and rebedded the screws ,Is there any where i can get the new screw cover material besides taylormade? They dont even list the sizes for mine.Mine are 1" x 1/2".Is this just neoprene,was it glued or just forced in.Glen
 
Nope mine are the foam type along the base of the windshield where it screws to the deck/dash.
 
1956olds said:
Nope mine are the foam type along the base of the windshield where it screws to the deck/dash.
Click to expand...

I replaced the foam type with these rubber/vinyl type and it was fine. The foam is only going to disintegrate again and I don't believe you can get that anymore.

Gene
 
Ok i will have to measure the opening next trip to the boat .thanks
 
1956olds said:
Any one change out thier cutlass bearings lately?!.5" shaft ,not sure of the inner or the length though.Seems like 2" inner and 6" from memory but i havent been to the boat in 3 months (ouch).Would like to order the bearings before the drive up if possible.Do i need the strut part number to get the correct ones? Anyone know where to order for good pricing? Are the manufacturers all the same or is there one that is better than another not just more web hits?Thanks Glen
Click to expand...

Hi Glen,

Replaced my 1998, 370DA, cutlass bearings last spring. shaft size: 1.5", outside diameter: 2.0", length" 6.0", material: naval brass sleeve. They were around $80 ea. at Deep Blue Yacht Supply.

Good luck - Ken
 
Thanks Ken,i found them at boaters plus for $67 and ordered them.
 
RubberDuckeeToo2 said:
I replaced the foam type with these rubber/vinyl type and it was fine. The foam is only going to disintegrate again and I don't believe you can get that anymore.

Gene
Click to expand...

Any chance you recall how many feet it took? I have the same boat, and mine is deteriorating and I'd like to place. I'd measure, but she's still shrink wrapped for another 2.5 months.

Thank you
 
Big project for the year looks to be a satellite system with a TV on deck and one in the salon.

I'm sure there's info within the 226 pages on here, but would anyone with a 370 care to post some pics and info on what they did?

Thank you
 
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