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  1. #1
    Join Date
    Dec 2012
    Location
    Fortrose
    Posts
    1,420

    Default 10hp engine replacement?

    Got a bit of a problem in that my RC8D engine is missing 2-3 teeth from the flywheel ring gear, and the starter didn't engage. I only found out today as I refitted the starter motor after an unrelated fault, but have a feeling that the teeth were broken some time ago. Now, it's going to be virtually impossible to get a new ring gear, and the engine will be sold to 'The' dealer in France for spares I'd think, it leaves a space in the back of the boat.
    I'd like some opinions on 8-10hp engines that are either great or rubbish, and why. The boat's not going into the water this year for other reasons, so I'm in a position to make an informed purchase. Refurbed engines of the same type as mine are still available, but I might want a more modern unit; even SWMBO mentioned that this may be a wise thing!
    Any help's much appreciated.
    Folkboat 'Stakkr' - Inverness - http://islandrov.wix.com/island-rov-web

  2. #2
    Join Date
    Aug 2011
    Location
    On the Celtic Fringe
    Posts
    13,782

    Default Re: 10hp engine replacement?

    Have you had a chat with these guys?

    http://www.marineenterprisesltd.co.uk/
    Cynical Scottish almost retired engineer.

  3. #3
    Join Date
    Dec 2012
    Location
    Fortrose
    Posts
    1,420

    Default Re: 10hp engine replacement?

    Quote Originally Posted by Sandy View Post
    Have you had a chat with these guys?

    http://www.marineenterprisesltd.co.uk/
    Cheers for the link, very interesting.
    Folkboat 'Stakkr' - Inverness - http://islandrov.wix.com/island-rov-web

  4. #4
    Join Date
    Jun 2005
    Location
    Solent, UK
    Posts
    4,585

    Cool Re: 10hp engine replacement?

    Just a thought but back in the day when I was a penniless apprentice, it was common to shift the starter rings of Triumph Heralds and A35/40s around a few radians, so that the starter engaged on undamaged teeth. I even turned one ring back to front on my moggie minor when two segments on the ring had chipped teeth. This won’t work if the ring itself is broken.
    Grow old disgracefully, it's more fun

  5. #5
    Join Date
    Dec 2012
    Location
    Fortrose
    Posts
    1,420

    Default Re: 10hp engine replacement?

    I contacted the dealer in France, who said he does have new ring gear, and that it's a doddle to fit! Good news, except he's not mentioned a price yet, and being the only source around does give him some clout!
    So, remove the engine, remove the gearbox, remove the flywheel and then swap the ring gear, and reassemble!
    What could possibly go wrong...
    Folkboat 'Stakkr' - Inverness - http://islandrov.wix.com/island-rov-web

  6. #6
    Join Date
    Aug 2013
    Location
    SW Scotland
    Posts
    18,897

    Default Re: 10hp engine replacement?

    If you do decide to swap then from bitter experience I would recommend not under any circumstances fitting a Nanni. I am seriously considering ripping mine out and re-fitting a Yanmar 1GM10.
    "Seamen are always wanting to do things the proper way; and I like to do them my way."

  7. #7
    Join Date
    Oct 2004
    Location
    Firth of Forth
    Posts
    2,586

    Default Re: 10hp engine replacement?

    If you do decide to replace, I can recommend the Beta 10. Easy to fit - I did it myself - and virtually no problems in use.

  8. #8
    Join Date
    Nov 2009
    Location
    Portland, OR USA
    Posts
    108

    Default Re: 10hp engine replacement?

    Quote Originally Posted by Thistle View Post
    If you do decide to replace, I can recommend the Beta 10. Easy to fit - I did it myself - and virtually no problems in use.
    I installed a new Betamarine 25 last year. Much (!!) quieter than the old tired out diesel... technology has indeed improved. My mechanic friends all like the Beta, with a Yanmar an OK second choice. None of them will recommend or willingly touch a wrench to a Volvo, BTW.
    Having said that I have a friend that rebuilt his 70's Volvo two cylinder engine and cruised it for over a decade before it wore out again... and then he put in a Beta and returned to cruising.
    'Opinions off the internet rendered, while you wait!"
    Now On sale.... only $.01 on our weekend special!!
    Olson 34 "Fresh Air"
    Portland, OR USA

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