CC28 Power?

[Guest]

CC 28.
What are the choice diesels.
I looked at one year 2000, with cummins 250 HP.
Noise levels, clean burn, etc..?

[Split Decision]

I think it matters on how you will use the boat. If you are going to load it up heavy for overnighting at the canyon, the 250s will be to small. I think if I was looking for a used one, I would look at the 330 cummins but you might have a shortage of fuel for long runs and will need to carry extra. I think ideal would be the 315 Yanmar but not sure if Mac put them in back then.

If you are running light, then the 250s will be fine.

[CClassic28]

Lou,

I feel the biggest decision in your power choice would be your local service availability.

In my case, I chose Cummins mainly for the service availabilty and it has paid off. I have not missed a day of fishing due to a failure of any sort. When I have had a problem, I would contact my service man on say Monday morning and most of the time he would have a man to me by Wednesday.

I have friends with Volvo's that have waited 10 days or more for a tech to come and look at their boats. Same deal with Cat.


If looking used I think the 315 Yanmars are probably the best power for this boat, but maybe not for you if service will be an issue.

If looking new, many are raving about the Volvo D4-260's.

When I move up to a 32 I will buy Cummins again, partially because I like them, but moreso for the great service.

BTW, I had emailed you some info on my boat from the THT, Let me know if it may fit your needs.

Regards,

Chris

[code blue]

volvo 260's

From hawaii with more problems than you would wish on your worst enemy. Current issue is port engine persistent oil leak, will have to yank the engine. These are brand new 2005 engines with 130 hrs. Have been through new lcd display, changed all computers(on waranty), have had fuel problems from day 1. If you want to talk let me know, for performance get 6 gph trolling at 8.5 knots and top end is 28 knots burning 22gph at 3400 RPM. Rob

[backman]

D4-260's Your overpropped or otherwise overloaded

I'm seeing 3600 RPM's/33+ knots/28 GPH. I run all over the place locally at 25-26 knots/3000 RPM/20 GPH.

Something is dragging your performance down. I run 18 X 26 Acme props.

465 hours with one oil weep which I will address under warranty in my next oil change.

[code blue]

d4 260

How could we have such a discrepancy? I have an 05 model with tower, I know I am not overloaded, travel with 3/4 tank, never more than 3 guys and about 300lbs of ice. I am sure we have the same props. I have a through hull transducer with a ferring block but nothing else to cause much drag. I have been over this with keith, he thinks my performance is limited as well. I get about 3360 RPM out of starboard engine and 4300 out of port wide open top out at 28 knots in flat seas. I do not carry any other significant weight beside the usual stuff. What type of paint do you have on your hull? I will check my manual tomorrow but am sure I have the same props. What fuel consumption do you get at troll speed, lets say 8 or so knots 1750Rpm??

[backman]

Something is wrong/agree

I have a tower; run with myself and 2 or 3 others - right now I am running in 60 degree air/60 degree water which is cooler than you and am not carrying ice (yet).

However; last summer on fully loaded canyon runs - myself and 3 others, full fuel, 200# of ice I would still get the 25-26 knot sweet spot at 3100 RPM and would max. out at 3550-3580 RPM, always at least 32 knots.

I'm running factory standard Pettit Ultima which is an ablative paint.

I troll at 1300 RPM/7.2 knots and burn less than 4 GPH at that speed. I don't ever run at 1750 as he boat plows at that speed.

In the cool air/rough seas up here this spring I have been doing a lot of slow planing, running the boat at ~2550-2650 RPM and getting 20-21 knots.

Do you perhaps have a fuel or air restrictions which is holding your top end down?

[Patriot]

Larry- what gear ratio are you running? You seem to have a sweet set-up for both speed and economy. A new CC with 315 Yanmars through 2:1 wih 18x25 props runs 39 mph, almost 34 knots. That info from Acme props. From the D-4 260 info I have gathered it seems like they are under-rated in HP??

[backman]

ZF63 gear 2:1 ratio 18 X 26 Acme props

With a full tank, calm seas and cool fuel I can hit 3630 RPM, which is 130 over rated WOT. I hit 33.5-33.8 knots regularly in those conditions/no tide/no wind.

I'm a knot slower than the Yanmar 315's at WOT; I do not understand how D-6 can be more than a hair faster than me as they too are limited to 18 X26 props by shaft geometry and also will max out at 3500 WOT/3640 governor starts restricting fuel.

The D4 produces very high torque in the midrange RPM 2200-3000 RPM where the charts show it producing 175HP at the prop.

[Tswann]

4300 rpms out of the port??? If this is not a typo than you have a prop that is under pitched/cupped. Also where is your high speed 'ducer block on the hull?? We have seen customers put on faring blocks (which is not recommended on the CC hulls) and knock off 2 knots, cause overheat, trim problems etc . . .

My 28 w/330 Cummins ran like greased lightening. Fuel/range was not an issue -- i was averageing 1.5nmpg and the guys that own her now have maintained that economy. The trick is with this setup is that you are running 450-550 rpms off the top (26-28 loaded knots)!!! The boat has more power than she needs and as a results the power plants are not working very hard at all.

[code blue]

volvo D4 260

I do indeed have a ferring block in place installed at the dealer. I have never seen above 30 knots here in hawaii at 3550 RPM. I assume we are running the same props as the size is limited by the tunnels of the hull. I use ablative paint but keep the props clean as a whistle. I never run with more than 3 guys and even by myself have barely touched 30 knots. the water here is warmer 79 or so year round so that may have some effect. It may indded be the ferring block knocking me down 2-4 knots. Unfortunately I need it to bottom fish for deep snapper at 600 ft here. My typical sweet spot is 2750 RPM at 22-23 knots depending on current.

[CHUCKABEAR]

R.p.m.

How could we have such a discrepancy? I have an 05 model with tower, I know I am not overloaded, travel with 3/4 tank, never more than 3 guys and about 300lbs of ice. I am sure we have the same props. I have a through hull transducer with a ferring block but nothing else to cause much drag. I have been over this with keith, he thinks my performance is limited as well. I get about 3360 RPM out of starboard engine and 4300 out of port wide open top out at 28 knots in flat seas. I do not carry any other significant weight beside the usual stuff. What type of paint do you have on your hull? I will check my manual tomorrow but am sure I have the same props. What fuel consumption do you get at troll speed, lets say 8 or so knots 1750Rpm??

I WOULD FIRST CHECK WHY IS THE STARBOARD ENGINE PUSHING 4300 RPM VS THE PORT PUSHING 3300.. GET YOUR MOTORS RUNNING IN SYNC THAN TRACE THE PROBLEM BACKWARDS

[CHUCKABEAR]

Check Your Props

I Think Tswann Is Right.. Check Your Props That Could Be It!! Your Boat Is Probably Yawing On You And You Dont Recognize It..

[Hey Doc]

4300 should be 3400

4300 looks like a typo guys. That engine has a rev limiter, I don't think that it will run 4300 rpm's.

[code blue]

d4

oops, that message from awhile back is indeed a typo. The engines are in sync.