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    harmonic balancer for 5.7 whats the difference between the 6 3/4 and 8 inch

    hello. i noticed the mercruiuser and gm v8 carburated engines use 2 different harmonic balancers . i have a few engines 1985 mercruisers, and gm replacements for 1985. i noticed that the engine with the 6 3/4 balancer, had a smaller flywheel and the engine with 8 inch balancer had larger...
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    will new manifold kit work with my 1985 y pipe? im getting mixed information.

    hello. i have a 1985 formula 25pc with mercruiser 5.7. i recently purchased a new oem merc manifold kit. but the risers on new set are different(4 inch), and my old risers where 3 inch. someone told me the new risers i have where 1987 and newer. my question is, will this new kit fit on my...
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    2002 bayliner capri 175, 3.0 liter 4 cylinder mercruiser, prop size questions

    when i purchased the boat, there was no prop. can anyone tell me what the stock size that would have came with it new was? and also, the boat is for fishing, skiing and everything. thanks
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    will a pre 84 or older 5.7 mercruiser block work with 87 engine swap.

    there is a possible complete 87 5.7 mercruiser engine that might be here soon. my question is. can everything on this 87 5.7 engine block, switch over to an early 80's or older 5.7 2 piece rear main seal block without a lot of converting. whats the difference besides the 2 piece rear main seal...
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    mercruiser carb, rochester, 3.0 4cylinder, adjustment questions

    i have recently purchased a remanufactured carb for my mercruiser 3.0. my old carb had only one adjustment screw, besides the idle. the new carb has 2 adjusting screws, side by side. can anyone explain these to me? how to adjust them? im leaving it to the pros, but i do want to know. what...
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    question about distriduter and timing. for mercruiser 3.0 est ignition

    Hello, and again i am having trouble timing this engine. if i cant get the engine to go to base timing, could there be somthing that needs replacement? i have followed all the steps. i have searched different sites to make sure im doing it right. ive even watched videos on youtube, and i could...
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    need help with boating rules in new england area, salt water

    when you are out at night, in your boat. do you need to have a front and back light? or is the front nose green/red light enough for the patrol to keep off my back?i have an 18 ft bowrider, and currently front light only is working, and im new to the saltwater. my rear light will be working...
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    im having trouble timing 87 mercruiser block and head with 2002 ignition system, est

    hello, i have a 2002 bayliner capri 175. i picked it up on a good deal. the owner did not properly winterize it after 2 summers of using it. and cracked the block. he then held onto it for a few more years until i got it. i eventually put in this 87 3.0, originally with conventional ignition...
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    will an automotive gm 5.0 engine work in a merc 5.0 boat swap?

    is it true that a small block chevy 305, 5.0 from say a 87 camaro, will replace a boat with mercruiser 5.0 engine. i understand they are not built the same,and marine engines are different and stronger. but would it work for long enough? i want to know if what somone is telling me is crap or...
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    78-82 formula 233 versus 1985 four winns sundowner 225.what would u pick?

    hello. i am currently in the battle over what boat i will be putting a mercruiser 5.7 in and restoring.- im leaning towards the formula. i hear a lot of good things about them. they seem like they hold value better, and ride really nice in the water. the only positive i can say about the...
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    new timing cover slightly different, merc, 3.0 4cylinder.will it work

    hello. i have recently purchased a new timing cover for my 3.0 4cyl, mercruiser. the new cover has no timing tab with marks to time engine.as the old one did. and there is 2 threaded holes missing (on new cover) that the front of oil pan bolts to bottom of timing cover. i can probably drill...
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    how to put crank pulley back on shaft after replacing timing cover. 3.0.? 4 cyl merc

    hello, i have a mercruiser 3.0 4cyl. and currently replacing timing cover. my question is. is there any tips to putting pulley back on crank? it was tight coming off. thanks
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    what are these fins for?

    i saw a pair of plastic (dolphin tail) looking fins on the same boat and outdrive as mine. they are located toward the lower section of outdrive, above propellar. what do these do? what are they for? thanks
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    will an 1987 3.0 alternator work in a 2002 3.0?

    i know its the same engine, but the older one was from a points ignition, and much larger then the one in the 2002 3.0 engine with electronic ignition. i just want to make sure theres not a regulator or somthing in one and not the other. if it does work, it will save me some cash for now...
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    2002 bayliner capri 175 gauges wont work

    i did a 3.0 merc ,motor swap in my 02 capri 175 and now no fuel, oil, temp, speedo, tach, nothing at all. the gauge lights come on but nothing else. everything is hooked up, and i checked all the fuses. does anyone have any ideas? i understand if 1 or 2 didnt work, but all not working is...
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    will this alternator give me problems?

    hello i have a 2002 bayliner capri 175 with 3.0 mercruiser. i recently ripped out another 3.0 engine from other boat and put it into my boat. its running pretty good, the engine was a 1987 with points ignition and bigger alternator. but i swapped over my electronic ignition, distributer...
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    timing question

    if i switch my points ignition over to an electronic ignition, and pull distributor, to put in the new one, will it take it out of timing when i put in new distributor? if yes, is there an easy way to time it? thanks
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    will a 1987 alternator, fit on a 2002

    i have a mercruiser 3.0 2002 with electronic ignition, will a 1987 3.0 mercruiser alternator from a points ignition work on my set-up? they both fit, but the older one is much larger. thanks
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    will this work

    will an older larger alternator out of a 1987 3.0 mercruiser with points ignition, work in a 2002 3.0 mercruiser with electronic ignition? note (the newer one is much smaller, but they both fit on the engine. thanks
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    i was told this might be a problem. is it true or false

    i recently dropped an 1987 3.0 mercruiser engine into my 2002 bayliner capri 175. the original motor was blown due to previous owner not winterizing. anyways, the older alternator is much bigger then the 2002 alternator. and i was told that this might be a problem to run 1987 alternator on...
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