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-   -   Duramax 400ss (https://www.offshoreonly.com/forums/formula/357598-duramax-400ss.html)

alindquist 11-10-2018 01:30 PM

Duramax 400ss
 
wasnt someone building a 400ss with some marinized Duramax’s? What ever happened with that?

pat@osp 11-17-2018 09:21 AM


Originally Posted by alindquist (Post 4658295)
wasnt someone building a 400ss with some marinized Duramax’s? What ever happened with that?

I've been curious about how this turned out as well . I actually asked Scott Porter about this boat when I saw him at the Annapolis boat show. My impression is that he wasn't thrilled with it compared to a Volvo diesel powered 400ss although he did say he thought the owner was happy with it. He talked about the Duramax combo having some turbo lag and maybe a harder time getting on plane vs the Volvo supercharger / turbo combo they normally use? I'd love to hear more about the boat also. Info on it seems to be scarce. I think someone that posts here is friends with the owner?

alindquist 11-20-2018 06:54 AM

Was formula actually putting this boat together? For some reason I thought it was some guy or some shop and an older boat... I can't find the original thread.

jbraun2828 11-20-2018 07:47 AM

The boat is up here in Michigan. The owner wasn’t to thrilled with the performance coming from a 525 boat previously. Between the time and money it took to do the conversation, I doubt it will be done again. The one thing he is very happy with is the fuel mileage, much better than gas obviously.

jbraun2828 11-20-2018 07:51 AM


Originally Posted by alindquist (Post 4660042)
Was formula actually putting this boat together? For some reason I thought it was some guy or some shop and an older boat... I can't find the original thread.

the work was all done at formula and pretty sure they said they’ll never do it again

Sydwayz 11-20-2018 09:42 AM

Member thp500s now has a 400SS with twin Volvo diesels; and coming from several performance boats including a pumped up 382, he's thrilled with the boat, performance, and fuel mileage.

fossil fuel 11-24-2018 09:13 AM

I saw some build pics of the Duramax boat. Zero I mean Zero access to anything. Pull engine to replace batteries, work on head pump, access autopilot pump, bleed steering, clean bilge. Very not practical.


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