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    leakdown/compression results

    1999 twin bf130s.Had the recall done in 02 .This year before the sea trial had these test down and results are as follows
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    prop results help please

    I have a 25ft wa boat weighs about 3850 dry it has a 350 5.7 Gm motor with the cobra outdrive.I have a 3 blade ss 15x 17 prop on there now. The specs for the motor I believe are 4400-4600 wot. I currently can reach 5100 with a speed of 32.4 other numbers are 4150@ 26.3 4000@ 25.00...
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    timing a 350 5.7

    Just installed a 1989 long block reman . It's a Gm 350 5.7 Omc set up it has the petronix ignition set up. The motor has the flat tappet lifters. I set the timing at 10 btdc the total is 32 and I'm burning 93 octane gas . Do these numbers sound right ? The motor does run well . If I move the...
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    flat tappet. vs. roller. lifters

    My mechanic is putting in a new jasper reman 350 5.7 Gm motor in my boat . I noticed the old motor had the roller type lifters but the one he ordered and the one going back in has the flat tappet type .will they work fine and last and will I noticed any HP lost ? Read so many different write...
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    OMC Log Style Manifolds

    Just bought a new set and was wondering if there is some type of sealant you use in between with the gasket , the riser and manifold ?
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    Rear Cylinders moisture

    Recent rebuild 1989 omc 5.7 bored over .30 Block is a 95-2000 according to the die cast numbers.Did a break in period . The motor was running perfect for about ten hours total time over the course of 2 weeks . I did an oil change at about two hours in then put in 5w-30 it was recommended...
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    omc thermostat housing

    1989 rebuilt gm motor 5.7 omc stuff on it,, my engine seemd to be running hot the guage would stay around 160 then when under power jump to 200-210 I back it down then it cool quickly so I removed the risers and manifolds split them apart and cleaned them out I then removed the thermostat...
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    OMC 143 thermostat

    does Iboats sell a 143 degree thermostat for omc? I have a 350 5.7 the thermo housing I think is a 1989 Im running in salt water most of the time I looked but coulndt find it thanks
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    engine coil neg post

    all set now thanks
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    petronix wiring/ alternator

    1989 rebuilt motor 350 5.7 GM 305 hp,,,I just put the new motor in and I am starting to connect all the wiring I have the petronix ignitor with flame thrower coil and Im wondering if I have to to disregard the red/purple wire from the back of the alternator to the pos side of the coil? is...
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    engine oil

    yes I did a search and cant find my answer could be my search techniques...anyway new motor rebuilt 350 5.7 gm motor in my boat omc sterndrive,,engine was bored over so the builder says it has 305 hp...I plan on starting it this weekend and would like to know what type of oil for the new...
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    oil pan baffles

    trying to buy a new oil pan mine is rusted out I notcied some say they come with a baffle some dont,,I boat mostly in the ocean 350 5.7 I know it helps with extreme angles and cornering in racing cars but didnt know if it is def required for a boat engine
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    gps antenna location

    anyone ever mount them on the side like this? the holes are already there I have about 6 or 7 boat not moving just sitting
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    Y pipe O Ring sealant(help asap)

    Putting back together it where it connects to the back of the gimbal assembly inside the bilge (350 5.7) and I dont want it to leak here what type of sealant should I use to hold that little thin rubber gasket in place .. black permantex? I was going to use 3m5200 but I dont know about the heat...
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    Removing 110 Gallon Fuel tank

    if possible would like to salvage how do you hook up to it to remove,,,I have a wrecker so lifting it wont be a problem ,, what are the options?? the tank is 110 gallons probably original 1989 and its been sitting surrounded by wet foam and i think some of the water is salt,,, I started to...
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    blower ventillation

    I have an inboard/outboard and yesterday I removed the louver vents to sand and repaint there about 3 inches by 16 and are attach to the side ,, the one that connects to the bilge blower hose,,but if memory serves me correct doesnt one of the vents go facing the bow and the one that has blower...
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    what size thermostat

    rebuilt engine 1989/2001 block 350 5.7 gm motor/omc set up 305 hp....its raw water cooled and fish saltwater mostly off the NH coast wht size should be in there ...thanks
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    what size fuel line

    1989/2001 350 gm motor 5.7 with 305 hp I have the carter marine electric fuel pump and a rocheseter 4bbl carb I want to know what size line goes from the carb to the fuel pump 5/16 or 3/8 ?
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    oil pressure safety switch i

    Has anyone ever hooked one up for the electric fuel pump? I have read that u add a tee and still use the old one is this tee just a set up from a hardware store bronze pipe etc. And why can't u just use the new three prong switch for the whole set up ?
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    Rochester Carb

    Im hooking up my new carter marine electric fuel pump and noticed there is no connections to add the tube from the carb to the pump .. the old holley electric one did have one but not this one ,,where can i put this tube now? can it be blocked?
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