Bravo XR
 

Is Bravo one XR seacore for diesel motors ?

Sea core is just a different coating on the drive for harsh salt water environments. On the transom assemblies a few parts are replaced with stainless steel. At least this is what I was told

Same internals as regular Merc drives
https://www.mercruiserparts.com/seacore-system

So these are the same ?
https://cimg8.ibsrv.net/gimg/www.off...061467bfff.png
https://cimg9.ibsrv.net/gimg/www.off...25959fad5.jpeg

The top cap on the Seacore does not appear to be finned like an XR, but the propshaft does look like the correct size for an XR.

Performance wise there the same ? Or not

Yes, same drive, different coating. To be honest why don't they just put that fancy coating on all their drives?

Exactly !!!!
But just a question is there a bravo one xr for diesel motor ?

Yes, the diesel B1 comes in X and XR versions.

https://www.mercurymarine.com/en/us/...one-xr-diesel/

How you recognise a bravo 1 XR form diesel to gas ?

I think gas motors will more high performance?

There is no difference besides ratio. Any bravo x or XR can go behind a gas engine. They all work and perform the same no matter the stickers or coating on the outside.
The “diesel” drives are typically a higher ratio. So if you need a 1.5 ratio any x or xr 1.5 will work

If its an XR then its an XR. Nothing different internally.

Thanks to all for your help !!

Ok got it ! Open the box and the propeller dosent fit. The prop shaft is much bigger !
from what I read there is 1” and 1.25” so I am assuming mine is 1.25 ? Or there are more sizes ?

All XR's are 1.25 prop shaft from Merc, buy the 1.25 hub and you're good

Thanks

Is your prop a solid hub? If so, you might need a different prop.

If it's got the replaceable plastic hub, yep ^^^^^, just get the 1.25 shaft hub.