Diesel Upgrade Power Boats

[William D. Thompson]

I have a CD 28 with a 100hp Westerbeke and I'm thinking of 200Hp to achieve approx 13kts cruising. I've looked at Cummings and Yanmar although the latter is a 4 cylinder which might not be as smooth as a 6. Does anyone have a suggestion on a model?



barnbill@aol.com

[Jim Heldberg]

Let's see now...
1) Your 200HP goes 13kts with a roar of noise and a big fuel bill.
2) I sail at 6kts with quiet and beauty, at no cost at all, or occasionally power at 6kts with a murmuring 12HP diesel that burns a quart an hour.
CONCLUSION: Why have 7 more kts? I'll keep enjoying my CD-30 Ketch.

I have a CD 28 with a 100hp Westerbeke and I'm thinking of 200Hp to achieve approx 13kts cruising.

jimhpac@aol.com

[M. R. Bober]

Be careful, you never know if your parents sailed or motored.
Mitchell Bober
RESPITE
CD330

[Pete Asensio]

Bill:
I have a CD 28 Open with a 220 HP Cummins straight 6 diesel. She cruises easily at 16 knots, 7 GPH. She will do about 22 knots wide open, but who needs it? The prop is a 20X20 four-blade.

The Cummins replaced her original 200 HP Volvo which was apparently trashed by the original owner.

A friend of mine recently repowered his 28 foot downeast powerboat from a Crusader gasoline V8 to the Yanmar 4, and he is quite happy;
I have heard no complaints about vibration, but the straight 6 is inherently smoother, no doubt.

If I can answer any further questions, fire away and I will do my best.



pase@uconect.net

[Don S.]

Bill:
I have a CD 28 Open with a 220 HP Cummins straight 6 diesel. She cruises easily at 16 knots, 7 GPH. She will do about 22 knots wide open, but who needs it? The prop is a 20X20 four-blade.

The Cummins replaced her original 200 HP Volvo which was apparently trashed by the original owner.

Aren't the CD trawlers displacement hulls, the max speed limited by waterline length not horsepower?
Don Sargeant
~~COQUINA~~
CD25D #189
Happier with slow silence in Greenwich Cove

A friend of mine recently repowered his 28 foot downeast powerboat from a Crusader gasoline V8 to the Yanmar 4, and he is quite happy;
I have heard no complaints about vibration, but the straight 6 is inherently smoother, no doubt.

If I can answer any further questions, fire away and I will do my best.

[John Walden]

I have a CD 28 with a 100hp Westerbeke and I'm thinking of 200Hp to achieve approx 13kts cruising. I've looked at Cummings and Yanmar although the latter is a 4 cylinder which might not be as smooth as a 6. Does anyone have a suggestion on a model?

The Volvo diesel , TAMD40B, 165 hp is a bulletproof engine and will cruise at 12 knots at 5 gph. The 200 hp replaced this engine, but the first year it was out, it smoked alot. I was told that this was corrected in the later models.



jwalden@mediaone.net