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K&B Exhaust throttle

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K&B Exhaust throttle

Old 04-24-2014, 07:42 AM
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klord125
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Default K&B Exhaust throttle

I have a 3.5 K&B in a Seaducer 20 mono hull. It has the exhaust throttle that I'm done screwing around with. The boats only being used for weekend messing around. Can I put a carb on this and do away with the exhaust throttle. If so what carb can I use. I have a red 7.5 carb. Is that to big? Any help would be great. Thanks Ken
Old 04-24-2014, 10:47 AM
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Ron Olson
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You can lock the exhaust throttle open then use a carb. The Red barb is made for the 7.5's but has been used although you have ot run it slobbering rich. You best bet is a Black or Gold carb.
Old 04-24-2014, 11:00 AM
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klord125
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Thanks Ron, I have a NIB 3.5 OB that I can "Borrow" the carb from..
Old 06-07-2014, 05:53 PM
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klord125
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Ron it has a crankcase pressure fitting. Should I use that for pressure still? Or block it off and use a fitting on the pipe? Also Where is the best place for an outboard 3.5 k&b pipe??
Old 06-08-2014, 05:54 AM
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I haven't seen one with a crankcase fitting on it unless someone put one on. I have heard of people running one through a motor mount lug though.I'd just block it off and hook one up just ahead of the widest part of the pipe but that's me.

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