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Old 05 October 2015, 09:48   #11
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Country: UK - England
Town: Surrey
Boat name: Fugly & Rokraider 1
Make: Pac 22 & Porter 6.5
Length: 6m +
Engine: Ford 250 & jet,DT140
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Posts: 681
I think the Ford Sabre (6 cylinder, 6.0 litre) produces around 250BHP and revs to about 3000 RPM, making 1.5 BAR boost. Top speed is pretty abysmal, It is strong rather than fast, It is a great towing boat, but no speedster. I think the best I have seen is 27 Knots, but the engine hasn't been run in yet, so I haven't been pushing it. I doubt whether it will do better that 30 knots, it is very tail heavy and takes a while to plane unless I use the trim tabs. They make a huge difference and help keep it in a straight line, without them it can be a bit of a handful at speed.
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Old 05 October 2015, 16:33   #12
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Country: UK - Channel Islands
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Boat name: La Frette
Make: Osprey Vipermax
Length: 6m +
Engine: 200 Suzzy
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If it is a typical flange to flange connection then it is fairly straightforward with a set of feeler gauges. You may have to make a spacer equivalent to the Centaflex. Google shaft alignment for shaft drive boats and you'll find lots of articles. The Centaflex website might have a procedure for it. Certainly R&D couplings have a system whereby you use a feeler gauge and rotate the shaft a quarter turn at a time and take a new measurement. You then methodically tweak the engine mounts until the gap is averaged out.
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Old 06 October 2015, 13:02   #13
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Country: UK - England
Town: shepperton
Boat name: Halmatic 28
Make: Halmatic
Length: 9m +
Engine: inboard
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Posts: 17
Thanks Erin, that's good advice.
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Old 08 October 2015, 07:57   #14
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Country: Australia
Town: S/E Queensland
Boat name: White Hurricane
Make: Zodiac Hurricane
Length: 7m +
Engine: Yanmar 6LP 315hp Jet
Join Date: Apr 2012
Posts: 74
Call Frank at Doen Jet in Melbourne, Australia on 61 3 9587 3944. He'll tell you exactly what you need to know! All the best.
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Old 08 October 2015, 09:58   #15
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Country: UK - England
Town: shepperton
Boat name: Halmatic 28
Make: Halmatic
Length: 9m +
Engine: inboard
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Hi, been in talks with frank and sent him most the spinning parts of the jet +had a few new bits, in fact I owe him a few beers if I ever get to Australia.
The only thing I need to do is get a basic engine adjustment so that its aligned, I don't want to / can't be bothered to do it and want it done properly so I was looking for a person or company to do it for me.
I have since found someone to do it, so thank you for all your help.

Regards

James Harris
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Old 08 October 2015, 09:59   #16
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The important alignment is to first connect the engine-output flange to the output shaft. Followed by aligning the engine mounts to the keel which is done by using a johnson bar and correct six-point socket on the crankshaft outer bolt. This will force the engine to align to where the engine mounts must be secured exactly. So, the last part of the assembly is actually the engine mounts. As the crank is hand turned using the johnson bar the engine will shift to perfect alignment.
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