1957 rude 10 hp conversion to fuel pump

nwcove

nwcove

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ive converted a number of 5.5's and 7.5's to fuel pump ( b&s/mikuni) and they work like a top. has anyone done the conversion on a 10hp with the same style fuel pump...with success? or do/should i look for a bypass cover from a later model and go with an omc pump? ( drill and tap seems like the most economical option with a b&s pump, but i dont want to do it twice!!)
 
64osby

64osby

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Re: 1957 rude 10 hp conversion to fuel pump

I did the Minkuni pump under the carb, fed with the nipple off the manifold on a '58 QD19 Johnson 10. It has worked great.

Pics on the last post if you want to see- http://forums.iboats.com/showthread.php?t=533642

I do have a '57 Rude 10 that I will be using a bypass cover, because I have one. Will still use the Minkuni pump, but maybe in a different location.

I been wondering if it would be possible to trim the pulse input tube on the Minkuni and fit it over or in the bypass cover hole with a gasket and a custom plate, much like the OEM pumps
 
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nwcove

nwcove

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Re: 1957 rude 10 hp conversion to fuel pump

thanks osby, i had concerns about the volume of fuel supplied vs demand at wot but the b&s ( mikuni) pump is also rated at 14L/hr so it should work.
with the under carb mounting, what is the pump fastened to? no room to side mount on the 10hp?
 
HighTrim

HighTrim

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Jun 21, 2007
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10,486
Re: 1957 rude 10 hp conversion to fuel pump

It is tight, so you dont really need to mount it at all, lol.

I have also made brackets and mounted them at the rear, above the plugs.
 
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