Reply With QuoteNo, there is a lot more to it than just carbs.
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Crappie Wall Hanger
50 into 75 HP outboard
I have a 50 hp Mercury outboard. I know it shares the same power head and all as the 75 Mercury. Can i turn it into a 75 with bigger carbs?
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“Within the covers of the Bible are all the answers for all the problems men face."
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No, there is a lot more to it than just carbs.
Fair Winds and Following Seas
Bill H. PTC USN Ret
Chesapeake, Va
Crappie Wall Hanger
What else is different? It has the same bore and stroke, same size and weight.Originally Posted by Barnacle Bill
Carter
“Within the covers of the Bible are all the answers for all the problems men face."
Ronald Reagan
Super Mod and 2014 Crappie.com Man of the Year
* Crappie.com Supporter
The best thing to do is get a copy of parts lists for both then compare. Look especially at manifolds, reeds, exhaust tuner and switch boxes.
Mercury Marine Parts
Fair Winds and Following Seas
Bill H. PTC USN Ret
Chesapeake, Va
Crappie Wall Hanger
Will do thanks.
Carter
“Within the covers of the Bible are all the answers for all the problems men face."
Ronald Reagan
Crappie.com Legend
It could just be compression [pistons] and bigger carbs.
MEMBER CRAPPIE MAFIA
Slabmaster
Yup, possibly just compression ratio higher (domed piston, and/or smaller cc combustion chamber) AND carb jets/ reed plates. Most 150's, 175's, and 200's are ALOT the same....bore/stroke, weight, power head, etc. But the "other" things change the HP, like jet size in carbs, reed plate "flow"/design, and timing (advance).
Crappie.com 3K Star General
Do some research on these reeds OUTBOARD - PRODUCT SEGMENTS , I know they woke a few dirt bikes for me in the past, thinkin about installing a set in my 90 two stroke, also check the the blades in your carbs now, to make sure they are completely open at wide open throttle, if not adjust cable to completely open blades..... A lot of people aren't aware that they loosing performance from things like that.
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