Searching for replacement D1005

Ursa Minor Beta

New member

Equipment
Beta Marine 25 ( Kubota D1005 )
Aug 31, 2025
26
8
3
The deep ocean
Hello,
as I noted in other posts here, the D1005 base engine in my Beta Marine is in dire need of a rebuild due to many small and some bigger issues.
Now in my current situation and location it seems to be a better idea to just exchange the base engine with a better second hand one. Now while browsing various second hand dealersI noticed that the D1005 comes in some different versions.
Does aynone here know if there are versions that have major differences which would make a swap rather complicated?
I am aware that some engines have a "Boost Compensator" which my engine lacks. But I am sure that this is not a big issue?
Of course I am only referring to engines with variable RPMs not the fixed generator type, as I guess the conversion might be a a slightly bigger deal.

Thanks for all hints!
 
Last edited:

Russell King

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Austin, Texas
@Ursa Minor Beta

Perhaps this could work for you??? Just came up for sale and is close in model number.

 

North Idaho Wolfman

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@Ursa Minor Beta

Perhaps this could work for you??? Just came up for sale and is close in model number.

He's pinging out of Austria right now, go I think he's a bit too far for that sale.
 

Ursa Minor Beta

New member

Equipment
Beta Marine 25 ( Kubota D1005 )
Aug 31, 2025
26
8
3
The deep ocean
Haha. Yes. I am actually a bit more south than Austria but in the general area ... :)

I am still trying to figure out the various differences in the d1005 engines.
Some have a hose attached to the engine block close to the oil filter. ( See first image )
On others this opening is not used. ( see second image )

What is this used for? External oil cooling?
Thanks
 

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