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4hp Johnson remote fuel tank and prop change

 
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colinc



Joined: 09 Jan 2007
Posts: 2

PostPosted: Tue Jan 09, 2007 7:47 pm    Post subject: 4hp Johnson remote fuel tank and prop change Reply with quote

Hi.

I have a 4hp Johnson engine (BJ4BRCCS - serial# 7641969) which I believe is a 1988 model. I'd very much like to increase the prop pitch or diameter to get a little more grunt and a little less thrashing. I'd also quite like to use a remote fuel tank so that I'm not having to stop to top up every 3/4 of an hour or so.

Are either of these things particularly difficult to achieve? I'm not at all sure whether my engine has a mechanical fuel pump or not and a web search for "johnson 4hp propellors" just leaves me more confused than ever.

I'm in the UK, if anyone's in a position to post a source for a new prop and/or suitable fuel line adaptors/whatever. I'd much rather make these changes to my johnson than get a different motor if at all possible since apart from those two niggles I've been perfectly happy with it.

Happy boating everyone.

Colin
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MikeW
Senior Member


Joined: 01 May 2006
Posts: 680

PostPosted: Wed Jan 10, 2007 1:12 pm    Post subject: 4hp Johnson remote fuel tank and prop change Reply with quote

Hello Colin, unfortunately there is only one propeller available for that model engine. It is 7.5" X 7" RH. OMC does not offer a kit to convert from the on engine gas tank to a remote tank either. You will need to upgrade to a higher horsepower engine to have these two options.
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colinc



Joined: 09 Jan 2007
Posts: 2

PostPosted: Wed Jan 10, 2007 2:18 pm    Post subject: Reply with quote

Hi Mike

Thanks very much for the info. I had tentative plane to use the 4hp Johnson on an outrigger canoe setup and a faster prop and lower centre of gravity a remote tank offers would both have worked in it's favour. It looks like it's not going to be very practical though.

Colin
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