Official 370 Sundancer thread

koviak said:
Off topic of the generator discussion. Looking to see what prop size and 3 or 4 blade combo works best for the 1995 370 sundancer. My engines are re manufactured long blocks (Gen 5 with roller cam) built to 310hp specs. Running 18 x 21 (3) blades now (Nibral), Cruise at 3200rpm is 16knt. / W.O.T. is 4400rpm / 26knts. Read thru all 214 tabs in this forum searching for an answer and really not clear.
Numbers about right for this ?
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18 x 21 3 blade is stock. But I think your speed numbers seem low. How did you check those?

I originally has 17 x 21 4 blades and while speed was ok, rpm’s were low. Went to 18 x 19 4 blades. Here are the results I posted a few pages back.

“Got new props over the winter. Acme 18 x 19. Did a short shakedown today.
WOT was about 4100 RPM, Gps @31.5 mph. (vs. 3800 RPM, 28-29 mph)
Good cruise at 3000 RPM, Gps @ 22.8 mph (vs 3200 RPM, 22-23 mph)
Did 2600 RPM while still on plane, 15.1 Gps. (vs. 2900 RPM, 16.5 mph)”
 
koviak said:
Golfman 25, speed checked by fixed mount GPS and cell phone GPS.
Really notice lower speed with 6-8 people onboard as expected.
Click to expand...

I've got the same motors in my 400, the pics below show how mine run. I'd imagine a properly rigged 370 should be running a bit faster than this, though I wouldn't be too far behind @Golfman25 at those higher RPM's :).

This is fully fueled. Once I drop below a 1/2 tank I'll pick up another 1.5mph +/-.

53116472560_d03b0a8468_h.jpg


52897151879_3b6507c30f_h.jpg
 
koviak said:
Golfman 25, speed checked by fixed mount GPS and cell phone GPS.
Really notice lower speed with 6-8 people onboard as expected.
Click to expand...
Ok. Maybe double check your cruise with fewer people and playing with the trim tabs. Cruise you're only getting 18 mph which seems a bit slow (while almost 30 mph at WOT, which is prob good).
 
Golfman25 said:
Ok. Maybe double check your cruise with fewer people and playing with the trim tabs. Cruise you're only getting 18 mph which seems a bit slow (while almost 30 mph at WOT, which is prob good).
Click to expand...
Speeds checked with just myself onboard. 1/2 tanks of fuel, 3/4 tank of water. Best speed was obtained with using tabs at 1/4 of the way down.
 
koviak said:
Speeds checked with just myself onboard. 1/2 tanks of fuel, 3/4 tank of water. Best speed was obtained with using tabs at 1/4 of the way down.
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I would have your props checked at the next haul out. Make sure they are what they say they are. You can then work from there.
 
Golfman25 said:
So was able to get to the boat today with the kid. After thinking about it for a few weeks, I figured out a way to contort my body to crawl to the genset. Get between the engines. Lay down on my back. Then turn to my right side and crawl until I can get a hand on the oil filter. Worked great, was able to get in and out a few times. BUT, my oil filter wrench had too much play I couldn't get it tight enough in the small space I had to turn the thing -- probably about 1/2 inch. So it was a bust. Stopped at a few stores looking for a hex wrench that would fit, but all were a bit too large and would probably slip as I am assuming the filter is on there pretty well. Going to make one up in the shop -- make it a perfect fit and hope for the best. I really only have one shot at this before it all goes to hell. :)
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So I got a vice grip oil wrench from harbor freight and gave it another go. Oil filter came off easy. Got the remote kit installed. Used a cheap filter to do a real oil change/flush in the spring. I’m feeling it pretty bad right now. Shoulder is a bruised and battered mess.
D973CAFF-218F-42E2-8DBD-6DB9D31CD646.jpeg
 
370Dancer said:
Did you post what remote kit you used? I’d like to do the same
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I bot the Westerbeke version. Very expensive but I am sure it fits. No guessing and a single install. Should have been done when the built the boat.
 
Golfman25 said:
I bot the Westerbeke version. Very expensive but I am sure it fits. No guessing and a single install. Should have been done when the built the boat.
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red paint = $$$$ No Shite on the install. $350K boat, and they want you crawling around the back of the gen to do routine maintenance.
 
370Dancer said:
red paint = $$$$ No Shite on the install. $350K boat, and they want you crawling around the back of the gen to do routine maintenance.
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Yeah, stupid expensive. But imagine having a cheaper one not fit or go bad abd having to clean up the mess and do the install again. No thank you. I can barely move this morning.
 
Golfman25 said:
Yeah, stupid expensive. But imagine having a cheaper one not fit or go bad abd having to clean up the mess and do the install again. No thank you. I can barely move this morning.
Click to expand...
roger that. Not finding the kit. what is the part number(s)? Assuming this is a 7.0 BCG? Oil filter number? 036918? Thanks for blazing the trail.
 
Has anyone update the gypsy on the lofrans windlass to accept larger chain? (In my case, I want to use 10mm instead of 5/16)
 
@370Dancer So sorry I missed you/ this post. Our boat is actually the 5th or 6th one down on the left (facing the fuel Dock)! Did you come up for work?
370Dancer said:
JJ, didn’t have much time, but I did swing by E dock yesterday. No one around, but I believe you are 2nd in from the basin on the side facing the gas dock. Maybe on a future trip we can catch up.
Click to expand...
 
koviak said:
Off topic of the generator discussion. Looking to see what prop size and 3 or 4 blade combo works best for the 1995 370 sundancer. My engines are re manufactured long blocks (Gen 5 with roller cam) built to 310hp specs. Running 18 x 21 (3) blades now (Nibral), Cruise at 3200rpm is 16knt. / W.O.T. is 4400rpm / 26knts. Read thru all 214 tabs in this forum searching for an answer and really not clear.
Numbers about right for this ?
Click to expand...
My 96 is probably even a little slower again, although it's always difficult to compare with different weight/loads, bottom condition and water conditions!
Keen to see what decisions and results you go with.
 
Fly'n Family said:
Anchor and chain......

Lost my anchor when the rope cut, now needing to get a new anchor and I'm going to all chain.

On the Lofrans windless, it says "5/16". What I can find is the link size, does anyone know that size?
Also, is there any particular chain type that is best?

Had what I believe was a 35# anchor - plow type. Inland lake, sand, mud, rock bottom, anchoring in 10 - 30' where wind is the biggest factor.

Anyone have any suggestions based on experience for a replacement? Would it hurt anything if I went to a heavier....44# anchor?

Thanks.....
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It was an old question, and I can't see any answers, but I'm looking to confirm the same. I suspect 5/16 medium link which is unusual.
 
Hello from down south,
So Glad ya’ll have a dedicated thread to the 370. Looking forward to learning from everyone.
New to us, 1998 SR Sundancer 370 w/7.4L Horizons
 
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