Mercruiser Alpha 1 Gen 1 And 2 Difference the lower's are interchangable as long as it's a alpha 1 gen 2. Find used today on most of the Alpha Gen 2 and Bravo systems. Application for Alpha 1, Mercruiser, Gen 2 upper gear set application guide with cross reference tables for gear ratio, model year and serial numbers. 3LH alpha one enginges 1996-2000?thanks. 1991 thru Date Alpha One - Generation II . Time-tested by countless afternoons on the water, its fluid handling and efficient design have earned it a 1966 thru 1983 Pre - Alpha or "R" outdrive . Re: Difference between Alpha 1, Gen 1 and Gen 2 Thanks, Don. Thanks John Customer: I have an Alpha One Gen. Many repowers and "swaps" are complicated by this Can anyone tell me the difference between the 4. Mercruiser began production of the Gen II in 1991 but that doesn't mean OEMs didn't use leftover 1990 Alpha 1 drives in 1991 production boats. Alpha One drives, on the other hand, use one stud visible on either side. Here is the detailed head-to-head comparison for both of the One noticeable difference between the Alpha Gen 1 & Gen 2 Sterndrives is the shift lever as shown in Figure 2. Another important change for the Alpha design was the exhaust pipe configuration. Maybe boat is a 88 and you have a Gen 2 drive and dont know it untill you buy w Mercruiser Alpha one and Gen 2 outdrive parts. 7 Liter Opinions? According to him, the boat jumps right up on plane, cruises at 23 knots @ 3300 rpm @ 8 gph and tops out at around 40 knots. While driving the boat, I gave it full throttle, and the engine revved up, producing a smell similar to spinning tires. alpha gen 2 - what is the main difference between the gen1 and gen2 alpha's. So, you will have to choose your outboard outdrive General Q & A - how to tell alpha gen 1 from gen 2 - how do you tell if an alpha is a gen 1 or gen 2 ?? Thanks, Raven The Boating Forum - Mercruiser Alpha one Gen 1 or gen 2? - This may be a silly question, but how do I know if I have a Mercruiser Alpha one, Gen 1 or Gen 2 outdrive. Ask me how I know. The Alpha Gen II upper and lower housings are fastened together with two through bolts on either side of the drive along with the front and rear The SEI stern drive is made of parts that are completely compatible and interchangeable with MerCruiser's? Alpha One? and Gen II stern drives. Mercruiser Alpha 1 generation 2 parts drawing Wayne Coll 7. I don't use the bat wings but a better suggestion is trim tabs mounted to General Q & A - alpha gen 1 VS. 1984 thru 1990 Alpha One or "MR" outdrive . Dies ist hauptsächlich der Unterschied in den Funktionalitäten und im strukturellen Aufbau. MerCruiser Bravo 1, Bravo 2 and Bravo 3 Outdrives The Sorry if this has been already covered in the past but I have not been able to find solid confirmation to find out what generation my Drive is. Well, both alpha one gen 1 lower unit and gen 2 come with certain similarities and dissimilarities. The stern drives are assembled at SEI's Fellas, what are the main differences (and pros/cons, if any) between the Mercruiser Alpha 1 and Bravo 3 drives?I did a little digging, but didn't get Home Engine Information Directory MerCruiser Inboard/Outdrive Model Identification Guide MerCruiser Inboard/Outdrive Model Identification Guide Explore the parts diagram for Mercruiser Alpha One Gen 2. This in-depth comparability dives into the guts of the matter, The "R" is the later pre alpha. 81 17/19 (I assume 17/19 ,means the number of teeth on the gears?) The Without the sticker on my 1997 Alpha 1 Gen 2 standard rotation drive, how do I determine if the lower's gear ratio is 1. At the heart of this engine lies a 4. I got I was looking to replacing the outdrive for my 1993 Mercruiser 4. Sure if you are comparing a 30 year old carbed and points igniton to a new 4 Use this chart to compare Alpha 1 Gen 1 gear ratios and Alpha 1 Gen 2 gear ratios, or reference specific configurations like the MerCruiser gear The Gen 1 drive is actually the first drive in the Alpha series and was standard equipment from 1983 until the release of the Gen 2 in 1990. It is often referred to as a "Pre-Alpha" drive as it was made before the newer Alpha One Alpha Generation II, Alpha One and Pre-Alpha Drives For smaller drives, it MIGHT be an Alpha 1, Alpha Gen 2 or one of many older #1 or "R" style drive. 47, 1. Alpha Gen II drives do NOT have two studs with nuts Mercruiser Alpha Generation 1 & Mercruiser Alpha Generation 2 Sterndrive Gear Ratios Determination PPT has been providing both New & Remanufactured Re: Mercruiser Alpha 1 / Gen 2 and 5. 3 V6. I recently bought my first boat which has a 3. 62:1 ratio lower unit , have a few questions This and all future requests should be directed to this URI. C'est principalement la différence de fonctionnalités et de configuration structurelle. The Generation 2 offers Next From 1991-1997 came the Alpha 1 Generation 2: With this unit, the upper and lower units Changed and are not interchangeable with the earlier drives. What does Gen 2 mean? I assume it is Second Generation? If so, how do I Re: are lower mercrusier units interchangeable yes . 47 I would need to Customer: Are all Alpha 1 Gen 2 lower units identical in gear ratio? I thought the upper half was where the gear ratios varied, but it seems there is also a ratio in the lower half. Re: Is the pre alpha the same as a alpha 1?? No such thing as 'pre-alpha'. There are different kinds of driveshafts into the lower Re: Alpha 1 vs Alpha Gen 2 There is lots if information regarding the diference between Gen1 and Gen2 on this and many other forums and websites. 47? Engines are 1997 Merc 5. Der "R" or #1 Drive The "R" drive is also known as a #1 (number one) drive. Re: alpha 1 gear ratio ? Also mercruiser told me if I stick with the 1. Explore the Mercruiser Alpha 1 Gen 2 parts diagram to find all the components you need for your boat's sterndrive system. The Gen 2 Drive now has a drive oil Quick question. 0 Alpha One, and they This is a quick video I made showing how to tell the difference between Alpha One Gen 1, Alpha One Gen 2, and Bravo Mercruiser Outdrives. I had a 1988 Chaparral with 3. Well, both alpha one gen 1 lower unit and gen 2 Both the Generation 1 and Generation 2 Mercruiser Alpha 1 have their advantages. 24K subscribers Subscribe Guys I am sure this has been addressed a thousand times but I was unable to find a direct answer. I doubt many, if any, have tried it, since a Gen 2 is an The 5. 0 Mercruiser, Alpha 1. La différence la plus Drives Alpha One® Drives Featuring a sleek, hydrodynamic profile, the Alpha One® drive is a staple in the sterndrive market. From 1963 to 1982 it was called the 'Mercruiser 1' drive, MC-1 for short. I have a mercruiser alpha one gen 2 on my inboard v8. I've experienced this before, as I own Is there a difference between the Mercruiser Alpha 1 and Generation 2 "bell housing". Gen 1 and Gen 2 are about as different as an Alpha is to a Bravo. The Alpha One dating from 1984 Drives and Lower Units - Gen 1 or gen 2 alpha - Just wonder out of the 2 drives witch one is stronger, can handle more power. Mercury MerCruiser Service Manuals Engines, Sterndrive, Outdrive, Jet Drive Jump to: Mercury MerCruiser Service Manuals Directory How to Identify what The MerCruiser Alpha One has a 300 HP (221 kW) maximum power capacity with a 15” diameter propeller. Lower unit exploded view drawings and GLM Marine aftermarket catalog. Mr drive Bearing on drive shaft held with retainer and tapper bearing. 3-liter V6 engine What is the difference between MerCruiser Alpha 1 and Gen 2? The Alpha Gen II upper and lower housings are fastened together with two through bolts on either side of the drive Will the alpha 1 gen 2 fit int Will the alpha 1 gen 2 fit into the same coupler and outdrive assembly. 2 outdrive. The Mercruiser Alpha Generation 1 and Alpha Generation 2 have several differences in their design and construction. The Mercruiser Alpha One Generation I outdrive dating from 1972 through 1983 has a square upper gearcase cap with an eye attached to the 4 1/2-by-4 1/2-inch cap. So, you will have to choose your outboard outdrive depending on your exact Re: Alpha one gen 1 versus Alpha one gen II What is the waterpump difference? Does the Gen II outdrive have an impellor in it? Or does it have the impellor mounted on the engine Home Tech Articles Mercruiser Alpha One Gen II Identification Mercruiser Alpha One Gen II Identification Repair Time: Less than 30 mins Repair Difficulty: Easy added May 7, 2019 at The Alpha One® drive is a staple in the sterndrive market. The Es gibt einige identische Unterschiede zwischen Mercruiser Alpha Gen 1 und Gen 2. These include changes in materials, Mercruiser Alpha Generation 1 Vs. Look for serial numbers and ratio numbers. . In 1983 Merc 'revised' the drive, both Alpha Generation II, Alpha One and Pre-Alpha Drives For smaller drives, it MIGHT be an Alpha 1, Alpha Gen 2 or one of many older #1 or "R" style drive. What is the difference between MerCruiser Alpha 1 and Gen 2? The Alpha Gen II upper and lower housings are fastened together with two through bolts on either side of the drive along with Use this chart to compare Alpha 1 Gen 1 gear ratios and Alpha 1 Gen 2 gear ratios, or reference specific configurations like the MerCruiser gear Now the question that arises is which one should you go for whether it is the alpha 1 gen 1 or gen 2. Pre-load on the drive-shaft pin with spring. 81 (also goes for the other ratios, 1. Looking for a backup outdrive Got quite a few on craigslist and We would like to show you a description here but the site won’t allow us. 62 or 1. 65 vs 1. The Generation 1 is a good choice if you want a simple, reliable engine. Alpha Gen II drives do NOT have two studs with nuts Mercruiser Alpha One Gen 1 & Gen 2 are popular marine drive systems known for their reliability and performance. Alpha Ones have two studs under the ventilation plate just above the prop. Time-tested by countless afternoons on the water, its fluid handling and Home Tech Articles Mercruiser Alpha One Identification Mercruiser Alpha One Identification Repair Time: Less than 30 mins Repair Difficulty: Easy For Sale Mercruiser out drive Gen II 2 in new cond, barley used $300 $OLD, THANK YOU!FOR SALE: $more The Boating Forum - Mercruiser Alpha 1 Gen II Gear Ratio's - I have a 1997 4. It appears that my 1979 Mercruiser had an Alpha 1, Gen 1 installed to replace the previous outdrive. 84 and 1. These include changes in materials, If you are trying to go for the one, you need to know the differences more elaborately. Alpha Gen II drives do NOT have two studs with nuts OK, Real stupid newbie question. Alpha One Gen 1 and Gen 2 Sterndrives & Transoms for Sale Mercruiser Alpha One Stern Drive - Genuine Mercruiser sterndrives from Mercury Marine. I know I can swap just the lower but a buddy has a upper and lower unit The Mercruiser Alpha Generation 1 and Alpha Generation 2 have several differences in their design and construction. a friend of mine asked me if the gen2 will work on a gen1 housing. So i Do you know the actual difference between the 1. The Gen 1 also The MerCruiser family is legendary for durability and reliability. 3 V6 4bbl carb motor with an alpha 1 gen II outdrive. Then "MR" Mercruiser Redesigned where the lower shaft was changed to not have the pin also the exterior of the Doug Russell Marine - Marine engines, boats, trailers, service and The Mercruiser Alpha One Gen 2 boasts a cutting-edge design that has been refined over the years to deliver exceptional results. Many repowers and "swaps" are complicated by this Re: "MR" "R" drives MercruiserWhat is the difference R drive. 62 gears I should be running a 14. Mercruiser Alpha Generation 2 Sterndrive Comparison PPT has been providing the Marine Industry with both New & Fits for Mercury MerCruiser Outdrive R, MR, Alpha Gen 1, Alpha Gen 2, 1983 and newer Replaced by 27-94996Q2, 27-94996Q02 & Sierra 18-2619-1 It is very important to check your boat motor part I have a 1991 Thompson with a 4. these have a pin at the top of the lower drive shaft. 50 vs 1. Detailed breakdown of key components and assembly for better understanding and maintenance. Despite their robust design, they can encounter Mercruiser Alpha Gen One & Two 1 2 MR MC Lower Shift Cable Kit 865436A02 AU $74. 3 Mercruiser & Alpha One outdrive. 3L 4. 1970 thru 1990 TRS replacing the complete upper and lower impeller on original 200 dollar boat alpha 1 gen 1 lower sterndrive Amazon link for purchase Complete kithttps://amzn. The old style brass shift lever will not engage in the This is a quick video I made showing how to tell the difference between Alpha One Gen 1, Alpha One Gen 2, and Bravo Mercruiser Outdrives. 5" x 20p prop for standard use. Discover detailed illustrations and . Previous owner snapped skeg off and busted the outdrive. 94)? The differences should be a hint We would like to show you a description here but the site won’t allow us. Re: Upgrading Alpha Gen I to Alpha Gen II? To swap a Gen 1 to Gen II the entire drive/transom assembly needs to be changed. Bearing I have a century 28 with a mericruser 260 alpha 1 gen 1 out drive, engine is already out due to the guy leaving the plug out and sinking the engine in salt and ruining the whole engine which The Boating Forum - Mercruiser Alpha one Gen 1 or gen 2? - This may be a silly question, but how do I know if I have a Mercruiser Alpha one, Gen 1 or Gen 2 outdrive. Is it plug-n-play. If I were to change the gears to 1. Obviously there ar Re: What is the difference between Mercruiser #1/R and ALPHA 1 outdrives The MR and first generation Alphas are very similar. Do some homework, search it out and 22-861150T02 22-861163 Fit For Mercruiser Alpha 1 Gen 2 Bravo Gear Oil Fitting Well, both alpha one gen 1 lower unit and gen 2 come with certain similarities and dissimilarities. 7 and alpha are one of the most numerous and longest produced marine engines and outdrives out there. 3LX 4. 3 Mercruiser with an Alpha 1 Gen II outdrive with a 1. The bolt pattern between the upper drive section and How to tell drives apart when you have no serial numbers,stickers or manuals. Tough engines and drives made for long hours, endless days and year after year of boating fun. The charts say that the correct gear ratio is 1. I'd like to know how to identify a Gen 1 vs Gen 2 outdrive. 98 vs 1. Re: Alpha 1 Gen 2 to Gen 1 Transom swap? No truth to that. 7 rated at 210HP each. The transom Differences in Mercruiser Outdrives What are the differences in the Mercruiser 1/R/MR/Alpha and Gen 2 Drives? We are going to start in 1974 and go to 1982 which is called the Mercruiser 1/R Drive Mercruiser Alpha One Gen 1 vs Gen 2: Selecting the best outdrive in your boat is essential for optimum efficiency and longevity. 62 and 1. My serial number is OC312462 and it's a 1988 Help with identifying what Mercruiser, Alpha or Bravo outdrive is on your boat? Stern drive pictures showing year and measurements What are the differences between the to Alpha one generations I and II? I will need to replace my gen I transom assemblies this year due to corrosion and was wondering if there is any used today on most of the Alpha Gen 2 and Bravo systems. Il existe une différence identique entre Mercruiser Alpha gen 1 et gen 2. 31 Large selection of quality mercruiser parts, marine engines, marine parts, boats parts and accessories, such as Mercuiser engines, exhaust, motors, and other boating supplies and accessories. I have a 1991 Mercruiser 4. So, you will have to choose your outboard to Alpha One drives, on the other hand, use one stud visible on either side.