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    mercuy 90hp 3cyl. 2T 1990 power trim question

    Hello, I 'm repairing the power trim -tilt rams of the above engine that are leaking oil and i noticed that the trim ram seals don't have internally scrapers in comparison with the tilt ram.Is this normal? If the debris gets on the trim shafts won't it harm their seal very soon?
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    mercury 30hp 4T 2010 bigfoot noise problem fixed but can't reinstall lower unit

    Hello everybody, My Mercury with only 180 hours on it some time ago started a noise something like a shot bearing mostly recognised at idle rpm.When i took the boat out and run the engine on muffs the noise was much louder almost sure that something was broken at the height above the lower...
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    Will my boat get more the same or less power converting to outboard ?

    Hi all, I 've found an outboard Mercury efi 225hp at a very good price and i wonder what would be the efficiency of my old (1978) Sea Ray SRV 220 if i replace the mercruiser 228hp inboard (around 30 knots) with the 225hp outboard adding a bracket.Please don't suggest me to keep the inboard...
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    Will i get more the same or less power ?

    Hi all, I 've found an outboard Mercury efi 225hp at a very good price and i wonder what would be the efficiency of my old (1978) Sea Ray SRV 220 if i replace the 228hp inboard (around 30 knots) with the 225hp outboard adding a bracket.Please don't suggest me to keep the inboard, I'm fed up...
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    Sea Ray SRV220 mercruiser 228 hp to outboarrd mercury 225 efi ?

    Hi all, I 've found an outboard 225hp at a very good price and i wonder what would be the efficiency of my old Sea Ray if i replace the 228hp inboard (around 30 knots) with the 225hp outboard adding a bracket.Please don't suggest me to keep the inboard, I'm fed up with all the troubles of the...
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    mercury 30/40 hp or yamaha 30 hp (both new 4-stroke mpi)

    Hello everybody, May somebody tell me which one is better? Does the mercury will give me significantly more hp? which one is more reliable? I' ve heard that the new outboard engines usually have problems and need aythorised technicians for the service because tuning an mpi engine needs special...
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    what is the torque for the head bolts for my gm350 ?

    In general i know the head torque for GM350 is 65lbs but the service manual #9 says that some models refered as "performance production" models take 75 lbs.My gm350 has block casting number 10243880 with the 14096217 (64cc 285/300hp for 12bolt intake, the center bolts at 72").I wonder if the...
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    help choose the right head gasekts for my gm 350

    Hello everybody, Two years ago i bought a new gm350 base marine engine.I 'm replacing the head gaskets due to overheating.In fact this engine has never worked at WOT properly without cooling problems although i replaced almost every part of the cooling system (raw water).The whole setup is that...
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    problem adjusting valves at gm350 carburated

    when i was adjusting the valves of my engine (i bought the block with heads new last year but hasn't still worked properly) i find out that at three cylinders when i was adjusting the nut 1 turn back the compression was lower.Doing a leakdown test i find out that the leak stopped at 1/2 to 1/4...
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    gm350 water in cylinders

    Sea Ray 220cc 1978.previously had pre-alpha outdrive MC-1 with gm305 carburated,now it has SE106 outdrive with gm350 with the fast burn heads(64cc 200-210psi) NEVER HAS WORKED PROPERLY.A week ago when idling at the dock i noticed drops of water exiting the starboard cylinders.Since the block...
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    alloy or iron intake manifold for salt water use?

    I 'm going to replace my intake manifold at my gm 350 (old style - carburated, 12 bolts) and i'm wandering a) if there is a difference between the two metals for fresh salt water use and b)can you suggest me a reliable site that sends internationally and to be sure that it will be brand new and...
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    2stroke Mercury 30hp starts-up with difficulty

    Hi all, i own a 30Hp Mercury (ONO34545 2004 MA30ML) and my problem is that even when i bought it brand new i had to pull 5 to 10 times the rope to start it up for first time.The only thing i can imagine that could make a difference is a different spark? The sparks it uses are the NGK BR7HS 10.Do...
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    spark plug type and gap for the V8 fast burn heads 14096217

    Does anybody here knows if the following not-vortec heads (14096217... 55-86...350..........Crate motor, 285hp/300hp, 64cc chambers) take the same spark plugs with the same gap as the mercruiser mcm 260 5.7l (Champion rv8c gap 0.035)? -rochester carb,delco est ignition-
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    rochester 4bbl loose throtle body screws

    Although the carb was rebuilt three years ago by a car mechanic now that i decided to rebuilt it myself i found that the two screws at the throtle body were significantly loose.I noticed also that they didn't have the washer that forbids loosening ( sorry i don't know how it's called) in...
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    need some advice on installing and retorquing the new head gaskets

    Hello everybody 1)a mercruiser dealer told me to use no sealant at all when installing the new gaskets.Not even a thin film round the water passages? (i know that the gaskets are embedded with sealants but when taking off the gaskets of my 350 with only 10 hours of operation i noticed that the...
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    can't find exhaust stem seal for gm 350

    When i dissasembled the valves of my 2year old gm350 carburated,not a stock engine but a base marine engine with the following heads :[ 14096217 Iron heads, centerbolt, They are 1987+ (and later) and feature 72 degree center bolts. Valves are 1.94 and 1.5 with 64cc combustion chambers] ,i...
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    Is it a better method to chech the exhaust manifolds?

    I 've read the sticky about checking the ex.manifolds by pressurising air or by acetone.I wonder if this method can detect the hair line cracks that appear in higher temperatures when the metals expand.So i want your opinion about connecting the one end of the manifold with a hose with my...
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    Does iboats sends parts internationally ?

    I' m interested in bying from Greece
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    rochester carb question

    hello everybody, When you swap from a mercruiser gm305 (1979) to a gm350 do you modify anyway your carb or it supposed to work as it is?(rochester 4mv ) my problem is not WOT (only about 3000-3500rpm) and overheating above 2000rpm. After so much searching discussed in an older thread i have...
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    Do you put any sealant on the head gasket when replacing it ?

    i rebuild a 7.5hp Evinrude 2stroke 1983 and before put the new head gaket on i wonder if i should use any sealant.A guy i had met and looked expert had told me to put a thin film of oil all around the gasket.When the oil gets burnt it leaves on the metal surfaces a protective layer.Another car...
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