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Old 25 June 2007, 18:21   #31
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Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
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I've put a sprit level actually level with flat part underneath the stern hull and stuck it out towards the anti cavi plate and its about 2" lower or put it another way the engines about 2" higher - so yes could come down an inch?

So looks like I have 3 problems -

1) how do I lower it? - I have used engine hoists on old MG cars before but i dont think I have an eye on the honda block? whats the best way to use straps?. I'll also need to get some more bolts as the lower ones need grinding off as they have locks on the inside that i dont have keys to! and ill need some sealer - i guess this is easy to get - anyone recommend anywhere?
Yep-Redline Outboards in Abingdon. You don't need to do more than support the weight to lower the engine on the bolts.Support then unbolt the engine,wind the jockey wheel down til the bolt holes are aligned as you want then bolt it back up.
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2) Honda say my model is 174kg, Zodiac say max load should be 165kg!!!! - but i've seen loads of 90's on zodiac - seems were all pushing our luck?
I wouldn't stick the extra weight of a 5hp aux on there too then.

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3) Prop - is 20 inch laser and I seem to get 5000 rpm WOT, manual says 90bhp at 5500. How can i find out what the prop should be for this model
It's not propped as per model but individually for the boat and engine combination with your usual load. I'd try a 17" first.
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or do you think the height of the engine could affect this performance?
Yes. Lowering it will slow you down unless you're propped correctly.
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or do you think the larger prop was an attempt to keep performance down?
No. I suspect that prop was what was on the engine when they sold you it and they tried to set the engine/boat up around the prop. It's the wrong way round to do it.


Would it help if I popped over again Mark? If you need a hand moving the engine on the bolts it'll be a lot easier with 2 people.
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Old 25 June 2007, 18:26   #32
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Country: UK - England
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Hi Tim,

Yes thanks for the info, I understand but it does not go that low!, its still resting on the rods from what i can see so they must be stopping it as i cant think of any other logical explanation?

Mark
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Old 25 June 2007, 18:31   #33
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Country: UK - England
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Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
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Hi Tim,

Yes thanks for the info, I understand but it does not go that low!, its still resting on the rods from what i can see so they must be stopping it as i cant think of any other logical explanation?

Mark

The rods are your trim cylinders-they should move too.
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Old 25 June 2007, 18:41   #34
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It seems that you have more than one problem there dude, the trim is not swinging lower enough and the prop is a miss match, i will come and have a look if you want, have you got a Honda manual that covers the tilt system?
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Old 25 June 2007, 18:41   #35
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Thanks Nos

If you have time to pop around again thats cool. I commute so I'm not around until 7pm weekdays, but have sometime on weekends...

I think my plan is :-

1) to sort out the trim/tilt first to see what's going on their - another problem!
2) then ill be able to get a true check of the cavi plate and transom height
3) Repair cracks around the motor (as best i can - hence i might need a hoist)
4) drop the motor one bolt hole - if needed

take it for a spin somewhere sensible

5) swap the prop......
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Old 25 June 2007, 18:45   #36
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The rods are your trim cylinders-they should move too.
Hi Nos,

yep, but they dont appear to be moving enough - ill have another look tomorrow. I've never checked the fluids as i assumed they have during servicing so it probably a good idea to check ...

Mark
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Old 25 June 2007, 18:47   #37
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Country: UK - England
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Not a problem Mark.

It's good to know that you didn't find any exposed wood down the crack. That was the biggest worry I had when I looked in there.

I think you're on the right track with your action plan
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Old 25 June 2007, 18:51   #38
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It seems that you have more than one problem there dude, the trim is not swinging lower enough and the prop is a miss match, i will come and have a look if you want, have you got a Honda manual that covers the tilt system?
Hi Tim

I downloaded a handbook from honda's website but its not a technical one. I'll see what i can find on the web,etc

thanks for the offer to come over mate - but dont worry for the moment. I think Nos might pop over again sometime - and if we get stuck I'll bring it over to Bristol for your comments!!

I guess i need to start learning about all this stuff sooner than later....

Cheers
Mark
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Old 25 June 2007, 18:53   #39
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yer no worries, looks like your in good hands with nos anyway, good luck, cheers, Tim.
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Old 25 June 2007, 19:08   #40
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Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
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yer no worries, looks like your in good hands with nos anyway, good luck, cheers, Tim.
Just worry if he turns up to the Priory Bay Picnic twitching slightly and mumbling about Seariders
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