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    Performance Mods

    I am trying to get a little more from my motor. It is a 1973 85hp evinrude. I was wondering if maybe bumping up the comp by shaving the heads would be of any benifit. I know the motor is old but it has very low hours and has been well taking care being that i know that for a fact, it was...
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    Max RPM and Compression Ratio

    I have a couple of ? I have a 1973 evinrude 85hp im curious to know what is the compression ratio and i keep reading stuff about running the motor at a higher rpm is safer to do because of the ethonal blended fuels? Any help would be greatly apreciated
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    What year

    A guy at work told me about an evinrude that he saw thats been sitting up for years. Here is my question the description of the motor is it is a evinrude 85hp and the color is grey. Does anybody know what years evinrude painted there engines grey in that size. Thanks for any info
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    Motor will not rev past 3k rpm

    I was in the boat yesterday it was running fine all day then it started hesitating when i would get on step up to wide open throtle. Then it cleared up.I then slowed the boat to a stop checked my fuel tank to see if i was running out gas everything was good.Try to get back up on step and the...
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    Poping from exhaust

    I have a 73 85hp evinrude when it is on the hose it pops out of the exhaust and breather idles down comes back up then it does it again every 5 to 10 sec its more out of the exhaust than the breather. When i raise the cold start lever and get the rpm up to about 1400 its not as bad.When i go to...
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    engine timing

    Is there a way to tell if a outboard is timed right with out going thru all kind of steps.I have a 1973 85 evinrude
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    ign coil swap

    would it hurt anything to try ign coils from a 1979 115 evinrude on a 1973 85 evinrude ?
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    rpm

    I have a 15ft v pad bass boat with a 1973 85hp rude at wot the tach registers past 6k at 45 mph (gps) the bad thing is the tach only goes to 6k so it might be alot past 6k the tach is a quicksilver set to the 12 pole setting i know the max rpm is 5500 it is a ss omc 13.250 x 17 prop not sure it...
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    6 amp stator

    I have a 1973 85 rude it didn't have power t&t to make along story short i took a power trim unit from a 1979 115 rude.I had some bushings made and that took care of that issue. So heres the ? The 85hp has a 6amp stator the 115hp had a 10amp stator will there be any issues with the charging...
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    power loss thru lower unit

    I have a 1973 rude 85 hp motor. I was wondering how much power is actually at the prop since in 1973 they rated them at the flywheel
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    Spirit bass boat

    I just purchased a 1993 Spirit v-150 15ft bass boat any info would be apreciated like the weight,is the hull made of all composite material.. to me it looks to be very well built.
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    1973 85hp evinrude

    What is sufice water preasure for this engine?
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    1973 evinrude 85hp gear ratio

    Hello trying to find out what gear ratio my 1973 starflight 85 rude has? I tried a search without any luck. Thanks for any replies
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