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    4.3L manifold to riser gasket question

    Hi, 1994 boat with a 1987 4.3L (SN is missing). Runs real good but got playing with a temp gun today with it on muffs. The engine runs at 140 degrees constant. The risers won't get above 72 degrees but the bottom of the manifolds are running around 160 degrees. Is it normal for the manifold...
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    4.3 cool engine, hot circ pump.. why?

    Sorry for the long post, but wanted to give as much info as I could.......... I'm working on a project boat. A 1994 chaparral 18 foot. I bought this boat with no engine or drive. I was able to find a used 94 4.3 mercruiser and a GEN II drive with all the plug and play stuff on it. I installed...
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    Alpha 1 GEN 2 oil leak, pressure good

    Hi all, I have a 1994 mercruiser 4.3 with a GEN 2 drive. Sorry I don't have the serial numbers right in front of me, I know they start with OF0--------. Before installing the drive, I pressure checked it and it held 15 PSI for about an hour no problem. After installation, it "seeps" oil out...
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    pressure check your own exhaust manifolds ??

    Hi All, I'm sure many of you have pressure checked your own exhaust manifolds. Do you add pressure to the exhaust side or coolant side? what kind of caps do you use to seal off what needs sealing off? How much air pressure do you use and how long do you keep it in there? If you have any pics...
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    More HP, more pitch needed?

    Hi All, My latest project is a 1994 chaparral 180 SS. mercruiser 4.3, alpha 1 GEN 2 drive The original motor was missing when I bought the boat, but was rated at 205 HP with a 1.84 ratio drive and a 23P prop. I'm building a motor to stock specs except: bore is 30/1000 over and I am adding...
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    Help Needed,ANTIOCH TN AREA Folks Please

    Hello, I'm looking for some help from anyone in or around the ANTIOCH TENNESSEE area. Has anyone ever heard of the company named: "Marine Perfectors Fiberglass" 3345 township road Antioch TN 37013 Phone # 615-366-1111 They have either gone out of business, changed names, changed phone...
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    4.3L oil pan difference

    Hi All, I've been looking into oil pans for the 4.3 mercruiser engines and I now have a question....... I've noticed the 87-95 years have the same part number for the oil pan, and the 96 and up have a different part number but also say there are aluminum for the 96 and up. Will these 2 pans...
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    gimble bearing question

    Hi All, I've been doing some research on the Alpha one gen 2 drive and I need some help clearing some things up...... Do the 98 and up use a different gimble bearing than the 91-97 models? If so, what is the difference? I ask this because I see 2 different part numbers for them. Thanks wcrjb
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    What drive do I have?

    Hello, I just received used outdrive today that I ordered. Can anyone tell me what year it is and what it is out of? the best I can read it, it says: OD834783 or OD834781 it's almost invisible to read. I know it's a Alpha one gen 2 drive with a 1.84R gear. I'm just curious about the rest...
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    4.3 brain picking time........

    Hi All, I recently purchased my next project, a 1994 chaparral 1830 SS sport. It has a 4.3 mercruiser and A1 G2 drive. The original engine is gone ( removed by previous owner ) The carb cover is there with the serial number of : OF360077 and says it's a 4.3 LX what is the HP of this version...
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    quicksilver 3000 controls

    Hello, I just purchased a 1994 chaparral 1830 SS sport as a project boat. It needs a motor and some interior work but is actually a simple project for me. My question is the control lever. I powered the dash the other day to check the gauges and trim etc. I noticed while playing with the tilt...
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    ANOTHER "what is this motor" question

    I saw an ad on e-bay for an 1985 bowrider and it says it's a mercruiser motor and drive but all it says is it's a 200 HP motor. The auction is through a charity organization so there is no way contacting them about it. Would this be a 4.3 motor? and would it also be the alpha one gen one...
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    who stole my grease fitting?

    I have a 1988 18 foot bowrider with a 3.0 mercruiser and a alpha 1 gen 1 drive. Last weekend while looking at a friends boat ( a 1987 16 foot bowrider with the same motor and drive as mine ) I noticed something weird....... His drive has a grease fitting on the lower steering pivot and mine...
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    trim and speed question

    Hello, I have a 1988 18' bowrider with a 3.0 mercruiser and an alpha 1 gen 1 drive. When trying to trim my boat, I gain no RPM or speed. The motor turns about 4200-4300 WOT at about 35 MPH. When I am trimmed down idleing out of the no wake zone and go full throttle, it jumps to plane no...
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    How Much Play Is Allowed?

    Hello, On my 1988 alpha 1 gen 1 drive, how much side to side play is normal? With my drive all the way up ( trailer position ) I can move the drive about 1 inch from one side to the other. I measured from the end of the prop ( the farthest point from the transom ). Is this normal or do I...
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    3.0 merc fine tuning question

    Hello, I have a 1988 18 foot bowrider. It has the 3.0 mercruiser with the alpha one, generation one drive. The past year it has seen a new motor, rebuilt drive, new bellows, gimble brgn, shift cable, recently installed new ignition system ( points, condensor, cap, rotor, wires and plugs )...
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    Gas Line Confusion, Advice Needed

    Hello, I'm going to replace my 3/8 gas line ( hose ) that runs from the tank to the carb. i have an 1988 bow rider with a 3.0 mercruiser in it. I have noticed there are 2 different gas lines ( hoses ) I can get: type A-1 or type B-2 Mine has the A-1 on it now but I am curious which one is...
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    Upholstry Problem, Need Help

    Hello, I'm in the middle of installing new vinyl on some of my wooden pieces on my 1988 18' bow rider. After cutting the new pieces from PT wood and adding foam and marine vinyl, I must admit it looks pretty good but I run into a problem......... I have these little 1"X2" metal ( tin ) plates...
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    Lazy Tach Reading

    I think I know the answer to this but I need verification.... On my 1988 3.0 mercruiser, my tach seems to read slower than the RPM of the motor. I hooked up my multi meter to it today to double check and I was right, When the dash tach was reading 1500 RPM, the multi meter was reading about...
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    Gas Tank Problem, Advice Needed

    Hello, In my 1988 bowrider, I have a 23 gallon aluminum gas tank mounted above deck,next to the engine on port side. I took it out when I replaced the floor and carpet and figured I'd flush it out before I put it back in. ( the boat has sat for over 10 years ) After a good cleaning, I filled...
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