Inboard Diesel Jackshafted Vs. Twins on a Seamark - Page 4

Snookerd · #31 08-27-2007, 10:19 PM

Greg-
That Cummins price sounds good. I need to get more info on that motor and the Yanmars. I know that I will get the price down to a lower number than high 20's installed.

Snookerd · #32 10-01-2007, 05:42 PM

I have looked at the rebuilt Steyr motor route and have come up with an estimate of $13,000 for the 256 model motor. It looks like the install with a VP DP Outdrive would be in the $18,000 area. Much better price option than the $25-30K

glow · #33 10-16-2007, 05:48 AM

How is your repower project coming along? Did you purchase the Steyr Diesel? Hope its all coming together. Aloha, Greg

Snookerd · #34 10-16-2007, 12:53 PM

Greg- I am just setting things up for down the road. When I started the thread, I was and still am just planning. You better believe I will be posting what I get into when I open the boat up. I am still looking for input from you and other inboard motor heads. I am considering removing one of my 225's to reduce weight while I use the boat.

Quote:

This is a future job, but I am rebuilding the boat with one of these choices in mind. Even if I rebuild the original transom myself, the cost of the new bracket, motors, rigging, ect. is around 30K. Since I already have the stringers and motor bay intack, and the old saddle tanks still in place I would not have as much retro-fitting.

glow · #35 10-17-2007, 05:49 PM

Thanks for the report Danny. I did some online research on the Steyr 256 yesterday. Have to say the motor looks impressive and mated to a Bravo III...Sweet. I talked it over with my father and he has still decided to stick with the Cummins 6BTA5.9 315 hp. As a Finance/Econ major turned construction worker I pointed out to my father that with the Euro holding an advantage over the US Dollar and having to be imported (Trade tarriffs, currency exchange, import taxes, etc.) that down the road the Cummins will most likely be the most cost effective powerplant. Also it feels good to support our own country's economy. Buy America!

As mentioned before the Cummins sales rep told us the B platform has been around next to forever and being used in construction equipment, US Government applications and I am pretty sure its the same motor in the Dodge diesel p/u parts availability, cores and rebuilt motor supply shouldn't be a problem. I talked to a friend of mine who put me in contact with another friend of his that has the same hull (23' seacraft stretched to 26') that I am helping my father rebuild. Hopefully we will get a chance to look at his boat and get photos/measurements as he had the 210 Cummins set up with a V-drive and upgraded to the 315. I will post pics if we get them so you can take a look. Most fishermen here use the 210 in their 23' Seacrafts/ 24' Yellowfins. Talk to you later, Greg

Snookerd · #36 10-27-2007, 10:19 AM

Greg-
I agree on the value of the Cummins. The Steyr is great on weight to HP, but not price or as available as the Cummins. I am going to check further into the 2 Cummins diesels you have mentioned. I would love to see your info on the set-up you are checking into. Anyone you know have this motor in a 23SC with that 315 Cummins? 1200lbs seems at the top of the scale for a unmodified 23 hull.

glow · #37 10-27-2007, 07:46 PM

Danny,

I think the 315 hP cummins is a bit heavy for a 23. You may want to talk it over with a full time boat builder like Hermco. The guys here will go up to a 250 hP in a 24 ft. Yellowfin (modified SeaCraft, they made a plug with the v a bit shallower and cast a mold to shoot an entirely new hull which is called a Yellowfin 24 or 24 Saltwater, same process for the 26 Yellowfin like my Dad's) using a v-drive set up. My friend has the 250 cummins and v-drive in his 24. When I have time I need to meet up with him and get pics of his boat and measurements. Will keep you posted. Just to let you know the 250 cummins may not be available as a rebuild unless you have cummins build it. As mentioned earlier the cummins dealer in Hawaii told us only the 210 hP and 315 hP are available as off the self rebuilds. They can do the 250 or other configurations previously offered and a custom build charge will apply. He told us the main diff. between the 210 and 315 is that the 315 has bigger injectors and requires a significantly larger cooling system which is where the bulk of the weight comes from. The 315 weighs about 200 lbs. more than the 200 hP volvo with a 290 outdrive. Double check the specs to be sure. I believe I found the volvo specs on their website. They have a historical engine spec link for obsolete volvo engines. Hope you find this of help. Take it easy, Greg

glow · #38 12-22-2007, 07:00 PM

Danny,

I have some pics of my friends boat. A 24' Yellowfin (modifed SeaCraft) with a 5.9BT 250 hP cummins and Hurth V-drive set up. PM me your email and I will send you some pics. Merry Christmas, Greg

Snookerd · #39 03-27-2008, 06:43 PM

I just found out that my 23SF was one of the original 6 jackshafted inboards built and was diesel.

gofastsandman · #40 03-27-2008, 08:08 PM

Hey Snookered,
A lot of the old Morgan 24`s used the B210 and there are a lot around Boca Grande as they were shallow draft semi displacement hulls and perfect for drifting the pass. Not well known and you can pick them up cheaply. Since you can get 10 - 20,000 hrs outta them that may be a thought. As Greg said everybody knows how to work on em and parts are easy. Cheap repower and sell the hull.
GFS