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Old 29 March 2016, 14:10   #51
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Surely the best way to pep up yer diesel, is to drop another in beside it and let them have some fun together?
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Old 29 March 2016, 14:28   #52
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Attachment 111632
Not sure what make but it can shift
i think that may b one of franky n bennyz Looey
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Old 29 March 2016, 15:02   #53
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We had a steyr 256 in a 9 meter stepped hull cougar and it was about a close to an outboard as I have driven a diesel rib.

High 5 prop and very little turbo lag and never had a problem even towing skiers (mono ski / wake boarders)

The cougar was a light boat so would be comparable in weight to an 8.1 scorpion I would guess?

even with the cost saving for fuel, I would stick with a new petrol outboard but then my boating is in namby pamby south coast where waterside petrol is easy.
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Old 29 March 2016, 16:23   #54
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Have Twin diesels in 8.5m great all round and economy to die for.


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Old 29 March 2016, 17:35   #55
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We had a steyr 256 in a 9 meter stepped hull cougar and it was about a close to an outboard as I have driven a diesel rib.

High 5 prop and very little turbo lag and never had a problem even towing skiers (mono ski / wake boarders)

The cougar was a light boat so would be comparable in weight to an 8.1 scorpion I would guess?

even with the cost saving for fuel, I would stick with a new petrol outboard but then my boating is in namby pamby south coast where waterside petrol is easy.

Probably the reason for the lack of turbo lag in that set up would be possibly partly due to the engines turbo set up which is smaller dia & will therefore spool up quicker than a yanmar 6lp which runs a relatively large diameter turbine & comp wheel.
But more likely due to you running the bravo 1 drive with a well matched prop

So many yanmar installations run bravo 3 duo props or bravo2 which is essentially a big cruiser leg with a big dia lower unit & huge dia prop which leads to very little prop slip on either drive which prevents the turbo spooling up to get the thing actually going
For a fast rib a far better set up is a bravo 1 drive with a well matched prop of which there are many variations unlike the b3 and b2 which your stuck with mercruiser's limited standard props
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Old 30 March 2016, 09:38   #56
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Diesel ribs?

Tony the dude has advertised that Scorpion now, if didn't already have a diesel rib I would have bought this, I think the op should take a look at this:

https://m.apolloduck.com/feature.phtml?id=466213&z=ie




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Old 30 March 2016, 10:24   #57
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Tony the dude has advertised that Scorpion now, if didn't already have a diesel rib I would have bought this, I think the op should take a look at this:
Looks like Barrowboy's rib. Nice boat, but the supply of Yamaha parts may become an issue over the next couple of years - particularly drives/dive parts.
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Old 30 March 2016, 11:17   #58
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Looks like Barrowboy's rib. Nice boat, but the supply of Yamaha parts may become an issue over the next couple of years - particularly drives/dive parts.

Yeah that's the Barrowboy's

What's up with Yam parts?


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Old 30 March 2016, 12:44   #59
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Yeah that's the Barrowboy's

What's up with Yam parts?
I suppose it depends on the existing stocks if they're no longer being produced? Obviously there will be aftermarket stuff - but whole drives or very Yamaha parts like pistons could get tricky in the midterm. Unless you know different - I'm kinda out of the Yamaha loop nowadays.
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Old 01 April 2016, 03:43   #60
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I'd imagine someone (if not yamaha) will do or start doing the service parts for the drives, bellows anodes gear cables etc
I can't see there being much demand for pistons etc as the engines once at that stage will be uneconomic to repair & owners will probably opt for used parts to keep old engines going
Drives are a fairly easy replace with merc bravo as they use same splines & transom drilling pattern
I'd imagine a yam powered boat should be a little cheaper than a yanmar but not a total nono
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