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Mercury powerhead swap?
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Mercury powerhead swap?
WalletHub reviews both companies side-by-side to show you which is better for your needs. 9 of that vintage is in fact a Tohatsu 9 Some of the Merc's have a slightly different carb, and slightly different shift/throttle, but the powerheads are identical It's This Old Outboard. The 115 is shot with a beautifull mid section, lower unit, etc. I can't find any serial # and it has large carbs, block is "Super Thunderbolt" casting. We offer outboard remanufactured powerheads and outboard lowerunits! We have mercury powerheads, mariner powerheads, johnson powerheads, evinrude powerheads, force powerheads, and yamaha powerheads. i dont think this is true by the way as ive talked to many on here that have done this swap. Fully remanufactured powerhead for Mercury and Mariner six cylinder 3. Jan 4, 2018 · 250xs and 250pro xs is a very popular for bass boat owners. View Full Version : Mercury 2 maineidyl. com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. I'd like to swap the Merc 500 into my Mk 55 but the cylinder head casting is different and the cowl mount won't work with original cowl. From what I've heard, the 120hp is the better motor of the group, so if everything else is the same. Product Description. Post by nd-farmer » Wed Apr 24, 2013 3:09 pm. 0L 225 and 250 horsepower Pro XS engines manufactured from 2005 and up. Hi, I have a 1957 Mercury Mk. TSM Performance Powerhead Rebuild Kit Mercury Mariner 4 Cylinder 40-50hp 1970-19970 out of 5 stars. 61-8M0125790 QUICKSILVER REMANUFACTURED 250 PRO XS DRESSED 2 STROKE POWERHEAD Remanufactured outboard powerhead, 100% new dress parts. Includes powerhead gasket installation set and break-in instructions. Still consider myself a " Marine Apprentice " after 47 years (learn something new every day). 0L engine and is it possible to remove a 2. Or does this statement cover this? " All of them are speced. Regular Contributor #1. talking to mercury with no success because the only serial # i have is for a racing xs. 00 (Fixed Shipping Cost) Product Description. The only thing is the 91A/B had a different adaptor plate from the 91C but the block is the same. I obtained a powerhead that's really nice from what I believe is a Merc 500. my question is what is a fair price to expect. Our comparison includes features, pros, and cons. Mercury powerhead swap? #6582380 08/31/11 08:07 PM: Joined: Aug 2011 W Green Horn watersw07 W Posts: 7. OMC Reman Powerhead 3 3L Etec 200HP Late 2008 09. Summer is here, and it’s time to swap out those closed-toe shoes for a pair of comfortable and stylish sandals. 0 mercury optimax with 215 hrs. Trying to get much more than 20hp out. I just lost number 6 cyl. If it has two 2 barrel carbs on a V4, it's a crossflow from the 1960's through the 1990's. Being a two stroke you need to know the cause of failure or you could ruin the new powerhead. Mercury 175hp to a 200hp powerhead swap? I bought a BW Ventura a few weeks ago. 0L Pro XS 225-250HP 2004-2014. Fully remanufactured powerhead for Mercury and Mariner three cylinder 40/50/55/60hp engines. Trying to find Mercury 150hp Powerhead Boat Parts online? Discover Mercury 150hp Powerhead Boat Parts on sale right here with the largest option of Mercury 150hp Powerhead Boat Parts anywhere online. Direct Fuel Injection Technology. You can find out more about the exceptions and conditions herecom : TSM Performance Powerhead Rebuild Kit Mercury 2 Fully remanufactured powerhead for Mercury and Mariner six cylinder 2. 1990 mercury 90hp 3cyl 2 strok 1990 mercury 90hp 3cyl 2 stroke with a problem in 1 cyl!. Price includes refundable core charge and free shipping. i am looking at possibly swapping out the powerhead on my 1996 mercury 135hp motor for a 175 hp powerhead, what are the important things to know about to see if this is work with zero modifications (assuming both are complete)? I have a 1999 200hp 3. Thread starter Ryanrcer87; Start date Jun 5, 2016; R Joined Aug 7, 2015 Messages 12. Learn more about the changes made to the 1960 Mercury and what engines were used. I have everything disconnected in the motor and I have removed the six nuts that holds the powerhead to the lower unit but they do not come apart. I have a 2011 225 ProXs, thinking about swapping to a freshly rebuilt 2010 250 XS Powerhead First off sorry if this is the wrong spot for the post. Warranty! 3 Cylinder Merc 4 Cyl Powerheads. Are you looking to swap your home for a new one? Perhaps you’re seeking a change of scenery or want to downsize to a smaller space. -Determine your outboard's year and horsepower and select correct option. 4 posts • Page 1 of 1 Powerhead Swap. 135 150 175 200 225 250 HSP Remanufactured and Rebuilt EFI/CARB Mercury 4 Stroke Powerhead. 9/15hp 4 Stroke Powerhead 879783A01 1998-2008. Mercury & Mariner Outboards. 93 30 Hp Evinrude Eliminating the Big Red Plug for Push Button Start & Powerhead Swap ! Follow th. Not sure what gaskets I need to do the swap. 75 chassis, and retain all the original looks and functionsDak I obtained a powerhead that's really nice from what I believe is a Merc 500. I can't find any serial # and it has large carbs, block is "Super Thunderbolt" casting. One of the options is to swap to a rebuilt powerhead but I’m not sure how difficult it is. Aside from the paint and the decals the Merc comes with the shift in the tiller handle (like many portable mercs of yesteryear) and the Tohatsu has the side shift lever. Hi I was wandering if you can you swap a 1999 mercury 150 xr6 powerhead with a 1999 force 120 with out much interference. Remove the rear mounting brackets from the powerhead Remove the powerhead and shift shaft. Includes powerhead gasket installation set and break-in instructions. be/gEOISADZEhs Technical Consulting. Mercury Tech: powerhead swap. Mercury offers a fee-free, digital checking account for US-based, incorporated startups. Years Applicable: All Years. I'd like to swap the Merc 500 into my Mk 55 but the cylinder head casting is different and the cowl mount won't work with original cowl. The 115 is shot with a beautifull mid section, lower unit, etc. Hi I was wandering if you can you swap a 1999 mercury 150 xr6 powerhead with a 1999 force 120 with out much interference. I am switching powerheads because I had. So, I decided to purchase a powerhead on eBay that claimed 115 PSI on each for $80 + $30 shipping. Im facing the same issue. Hi guys , i think this may be my first merc post,, i have a mark 28, a mark 28A a pr of merc 200's all with auto trannys i have a manual, it tells me i need a special tool to change impellors, i haven't got to them as i hear they are difficult, this week i got an '55 mark 25 18 hp manual. Delivery or installation available for extra charge. New (Other): Mercury99 Free shipping. There is a couple other minor differences but if they are from the same model run series one should bolt. Direct Fuel Injection Technology. There is a couple other minor differences but if they are from the same model run series one should bolt. Mercury 3 Cylinder Powerheads 2 Stroke. It had only 60 PSI compression in each of its two cylinders. 61-8M0125790 QUICKSILVER REMANUFACTURED 250 PRO XS DRESSED 2 STROKE POWERHEAD Remanufactured outboard powerhead, 100% new dress parts. DOCKBUSTER POWERHEAD SWAP. Our Mercury powerheads are built in the USA with the highest quality parts. 0L 200, 225, 250 HP 1994-2008 V6 CARB/EFI. If you have both powerheads, easy enough to check them when they're laying on the bench. 75 chassis, and retain all the original looks and functionsDak Mercury Outboard Powerheads. The 1960 Mercury had a more subtle attitude than its predecessors. We offer outboard remanufactured powerheads and outboard lowerunits! Powerhead Swap. tik tok unblocked My question is what year mercury power head will fit this motor ,just bolt on ? I recently acquired a used powerhead for my 1992 Merc 60hp. We replace your alarm and your water pump, and we take responsibility for either failure, as well as the powerhead. I can't find any serial # and it has large carbs, block is "Super Thunderbolt" casting. I'm thinking the powerheads changed in 1964 Pretty sure the early Merc 500's were the same as Mark 58 blocks, correct? I'll swap the Merc 500 Powerhead, Mags, carbs, starter, electrical (everything bolted to the powerhead) to make a Mark 55 sleeper for my 1955 Alumacraft Merry M. Swapped known good carbs, and powerpacks onto the engine. Jan 4, 2018 · 250xs and 250pro xs is a very popular for bass boat owners. 0 liter Optimax/EFI/Carb - $3,550 Johnson & Evinrude 2 stroke rebuilt remanufactured powerhead. Thread starter mercmania; Start date Apr 23, 2008; M Apr 23, 2008. Compatible with exhaust tube 8M0075819. The 150's bracket has 4 holes and I can jack it up higher, being that it's a 25" shaft. from what i have found out is they only offer a fully dressed power head new from mercury for the 250 pro XS will the newer motor's say 2017 250 proXS power. 88' 100hp need new powerhead what fits? By HPjunkie in forum Technical Discussion Replies: 2 Last Post: 03-08-2009, 10:43 AM. Learn about the individual missions that made up Project Mercury, starting with Shepard's Freedom 7 SIM-swapping attacks might sound like one of the identity theft horror stories that only happens to people who are too careless or cavalier with their personal information, but mo. What problems will this cause, if any? To start with Merc used two different powerheads for their 9. Thread starter Ryanrcer87; Start date Jun 5, 2016; R Joined Aug 7, 2015 Messages 12. Mercury Outboard Powerheads. Post by daveswaves » Sat Nov 21, 2020 1:33 am I think the 65 950 has the oval exhaust whereas the 79. Shipping: $135. Mercury 3 Cylinder Powerheads 2 Stroke. Aug 20, 2012 · If I swap a Mercury 1973 1500 powerhead with one from a 1977 which years specs should I use? According to the manual I have the only difference is in the timing 1973 has 6 btdc for the throttle pickup - primary, 1977 has 1-3 btdc. 75 dockbuster, and was wondering if I could install a later Mk. The stroke is slightly different. Carries a full one year warranty. photo framing shop near me found a 2001 optimax 150 serial number 0t320553. It had only 60 PSI compression in each of its two cylinders. Carries a full one year warranty. The 99 and 2001 look different under the cowl but whatever at this point. Includes powerhead gasket installation set and break-in instructions. com provides rebuild kits for all outboard motors I obtained a powerhead that's really nice from what I believe is a Merc 500. hey everyone, I have a 1978 mercury 1150 with a melted number 3 piston, can i use a 1976 1150 powerhead to replace it and use everything else from my 1978 ie: carbs, dist. If you disturb the exhaust plate when you remove the old powerhead (that often happens) then you would also require an exhaust plate. From what I've heard, the 120hp is the better motor of the group, so if everything else is the same. Product Description. This is different than Mercury’s rotation period, which. If you have a Mercury Card account, it’s important to know how to log in so you. It came with a 2019 Mercury 9. Which online-only banking solution is better for you? Read our review to compare Mercury and Novo’s features, use cases, and fees. Carries a full one year warranty. New Mercury Mariner Outboard 9. 75 chassis, and retain all the original looks and functionsDak I obtained a powerhead that's really nice from what I believe is a Merc 500. In order to provide you with the correct powerhead, the following information is required:1. So, I decided to purchase a powerhead on eBay that claimed 115 PSI on each for $80 + $30 shipping. apartment for rent montreal Mercury’s revolution is 88 Earth days. The powerhead had recently been replaced with a powerhead from a 9. I have a 2000 mercury 25 hp 2 STROKE WITH bad powerhead. I left the carbs/flexplate/stater all on the old powerhead for now so I can just swap it piece by piece onto the new one. powerhead swap. I have everything disconnected in the motor and I have removed the six nuts that holds the powerhead to the lower unit but they do not come apart. I have everything disconnected in the motor and I have removed the six nuts that holds the powerhead to the lower unit but they do not come apart. Either way, the power head itself has the same bolt pattern on the bottom. 200 HP EFI models from 2002-2008 [Core Value: $200] 1,005 #2. EFI fuel system only (s/n 0G960500-0T408999)57 Remanufactured Outboard Powerhead. The company's primary business is outboard motors. Jul 7, 2014 In an earlier thread, I determined my new-to-me 1975 Mercury 200 (S/N 4148487) was worn out. i dont think this is true by the way as ive talked to many on here that have done this swap. Mercury powerhead swap? #6582380 08/31/11 08:07 PM: Joined: Aug 2011 W Green Horn watersw07 W Posts: 7. Includes powerhead gasket installation set and break-in instructions. Yes the motors will only give 90 hp because that's all you gonna get from the jet drive. I obtained a powerhead that's really nice from what I believe is a Merc 500. I obtained a powerhead that's really nice from what I believe is a Merc 500. Are they interchangeable? The 1982 powerhead looks slightly different on the front cover (maybe bolt holes for LINKAGES in different locations worse comes to worse I may need to swap the. Replaces 2000-2001 Mercury or Mariner 175 Horsepower 2. Re: Lower unit interchange chart. Would a guy have to replace a powerhead to get the extra 25 or even 50 ponies out of a 3. This would be a good, cheaper alternative. I can't find any serial # and it has large carbs, block is "Super Thunderbolt" casting.
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Lost compression on center cylinder when it was run with no oil (long story). Compatible with exhaust tube 8M0075819. I have everything disconnected in the motor and I have removed the six nuts that holds the powerhead to the lower unit but they do not come apart. Mercury 6 cyl V6 outboard & Sport Jet non chrome bore 2. 0 litre mercury optimax. 75 dockbuster, and was wondering if I could install a later Mk. I came across an 88 200 merc power head for abt the same price as I was quoted for the repair on the 150. So your powerhead should change over. Horsepower/Models: Two Stroke 90HP/115HP. 6 easy steps and the po. I'm looking for a power head for a 1999 Mercury 25 hp 2 stroke. I have a 1979 merc 9 The powerhead is worn out, corrosion etc. This listing is for a Remanufactured Mercury/Mariner 200/225/250 HP Carb/EFI V6 3. Jul 8, 2018 · Hello all. sudbury obts 5L 150hp Carb/EFI/XR6 engines manufactured from 1992-2005. Mercury 3L/4 Stroke/Verado Moderator Join Date Apr 2008 Location Greenville, SC (US) Posts 94,972 #3 03-19-2024, 06:38 PM. Compatible with exhaust tube 8M0075819. $4,000 if you come pick it up. In order to access the crankshaft of the motor the flywheel wil. My question is, can I take the fully dressed 2001 powerhead and put it on the. Horsepower/Models: Two Stroke 90HP/115HP. Thread starter mercmania; Start date Apr 23, 2008; M Apr 23, 2008. 0 litre mercury optimax? Just by email at rainboatcom@gmail you are not alone. Mercury Outboard Powerheads. Our low shipping charge includes a prepaid shipping label so that you can ship the core back. 61-8M0125790 QUICKSILVER REMANUFACTURED 250 PRO XS DRESSED 2 STROKE POWERHEAD Remanufactured outboard powerhead, 100% new dress parts. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. If I swap a Mercury 1973 1500 powerhead with one from a 1977 which years specs should I use? According to the manual I have the only difference is in the timing 1973 has 6 btdc for the throttle pickup - primary, 1977 has 1-3 btdc. be/gEOISADZEhs Technical Consulting. youtube mp3 video converter Can anyone tell if the powerhead from a 82 merc 115 6cyl will fit an 88 115 6cyl? I see two part numbers between the two engines. 78A complete power head in the Mk. Does this matter? I was the post for the "thumping sound of 78 merc 1400" and it. New to the forum and honestly a little overwhelmed with everything that popped up when I used the search bar. The only things I see that are different are the '86 looks like it has a soft plug and it also has a larger surface. Thread starter richiniowa; Start date Jun 7, 2010; R Jun 7, 2010 #1 I am swapping powerheads on my 93 9. Jun 7, 2010 · Member #1. Yes, in general, SIM cards can be exchanged among mobile phones from the same carrier. I obtained a powerhead that's really nice from what I believe is a Merc 500. Im facing the same issue. Post by nd-farmer » Wed Apr 24, 2013 3:09 pm. Hope you enjoy :) Music credits: Get Shining Skies by George Georgia and over 1M + ma. 5 liter and below - $3,195. Last year (2005), Mercury four stroke powerheads from 25 through 225 HP (except the Verados) were built by Yamaha. I have a buddy who has a 2000 mercury 200 hp outboardthe powerhead is goodbut he does not have the midsection or lower unit. Thread starter mercmania; Start date Apr 23, 2008; M Apr 23, 2008. 00 Remanufactured Outboard Powerhead. 61-8M0125790 QUICKSILVER REMANUFACTURED 250 PRO XS DRESSED 2 STROKE POWERHEAD Remanufactured outboard powerhead, 100% new dress parts. I have everything disconnected in the motor and I have removed the six nuts that holds the powerhead to the lower unit but they do not come apart. They can answer questions for any Mercury outboard motor model or horsepower including Chrysler Outboards, Force Outboards, Mariner Outboards, and Mercury Inboard/Sterndrives. I obtained a powerhead that's really nice from what I believe is a Merc 500. newark nj homes for sale Jun 5, 2016 #1 Hi guys, I have a 200 2. Feb 14, 2008 Re: 200hp merc powerhead swap with 150hp? The power head should bolt on, but the differences are manifold. Jan 4, 2018 · 250xs and 250pro xs is a very popular for bass boat owners. how is this done mercury power head swap. 9 powerhead swap Night and day! Clean that mess out and the old power head might even work Reply. Freddie Mercury, one of the most iconic figures in the history of rock music, left an indelible mark on the world with his extraordinary talent and flamboyant stage presence Mortgage refinancing is basically swapping out an old loan for a new better one. My question is, are these motors virtually identical under the power head? What I would like to do is swap the. Upon ordering, please contact our experienced parts staff. Jun 6, 2016 · Mercury Powerhead Swap. Feb 10, 2016 The Merc 9. 78A complete power head in the Mk. In addition, many units include various engineering upgrades to improve the life and performance of your engine. Replaces 2000-2001 Mercury or Mariner 175 Horsepower 2. I have a 91 merc 150 that dropped rings on two of the cylinders. Head Bolt, T-Stat Housing Mercury 75-125DFI 1. Hello all! this is my situation. or are there other compatibility issues?. Whether man-made sources of mercury are contributing to the mercury levels in open-ocean fish has been the subject of hot debate for many years. Thread starter Ryanrcer87; Start date Jun 5, 2016; R Joined Aug 7, 2015 Messages 12. The bottom of the engine connects to a adaptor plate that interfaces it to the jetdrive instead of an outboard's lower end transmission.
russthemuss Petty Officer 2nd Class. I have to put a new power head on it. Different flywheel, different ignition system, different crankshaft spleen 13 vs 15. Jun 6, 2016 · Mercury Powerhead Swap. wendys locator 625 bore ( 3 5/8) where the 150 is a 3 If the motor is complete just swap them out as 4 bolts hold it to boat/jackplate and install a new impeller for safetys sake. 5 powerhead and bolt up a fully dressed 3. Thread starter Pinboy122; Start date Jul 8, 2018; P. talking to mercury with no success because the only serial # i have is for a racing xs. I came across an 88 200 merc power head for abt the same price as I was quoted for the repair on the 150. A Quicksilver® outboard powerhead can get you back on the water in record time without breaking the bank. trapping quincy inkitt Post by daveswaves » Sat Nov 21, 2020 1:33 am I think the 65 950 has the oval exhaust whereas the 79. The trim/tilt works on the 150120, shot. Whether man-made sources of mercury are contributing to the mercury levels in open-ocean fish has been the subject of hot debate for many years. Mercury Outboard Powerheads. 0L) OptiMax models, 1B973744 and above. (OE125483)and the motor is basicaly CACTUS. bigfoot rv for sale craigslist 0L Pro XS 225-250HP 2004-2014. I'd like to swap the Merc 500 into my Mk 55 but the cylinder head casting is different and the cowl mount won't work with original cowl. If you are in the market for a reliable and high-performing outboard motor, look no further than Mercury. Problem is that the assembly shows its salt water history.
I have a 91 merc 150 that dropped rings on two of the cylinders. Are you a vintage car enthusiast searching for the perfect addition to your collection? Look no further than old car swap meets. damaged block# c266774 DOCKBUSTER POWERHEAD SWAP. 5l 175 pro-xs uses 87 octane and I believe it actually puts out closer to 190 hp. hi, i was referred to a mercury dealer/mechanic and told him of my plans in swapping my 79 175 24 or 2 he told me this was not possible and to just buy a new 2 he claims the splines are different and the unit would also have to be changed. 5 200xs Optimax powerhead. Delivery or installation available for extra charge. I came across an 88 200 merc power head for abt the same price as I was quoted for the repair on the 150. Feb 10, 2016 The Merc 9. Would a guy have to replace a powerhead to get the extra 25 or even 50 ponies out of a 3. I came across an 88 200 merc power head for abt the same price as I was quoted for the repair on the 150 250 xs fully dressed powerhead swap to proxs. 1950 CZT Penn Yan Swift, 1957 Alumacraft FD, 1985 Larson Senza w/Merc 1150, Jul 18, 2010 · 1,005 #2. Mercury Marine, founded in 1939, is a division of Brunswick of Lake Forest , Illinois, in the United States. As I recall it was maybe 3/8 to 1/2 inch shy of meeting the mid-section. Fits the Mercury/Mariner V‑250 Pro XS, DFI (3. 0l V6 (Dual Loop Starter) Horsepower/Models: 225/250 2 Stroke. Includes powerhead gasket installation set and break-in instructions. Different flywheel, different ignition system, different crankshaft spleen 13 vs 15. The 91-94 is the same motor after 94 they changed to a lot of Mercury parts. The 99 and 2001 look different under the cowl but whatever at this point. meadowbrook orchards disc golf I can't find any serial # and it has large carbs, block is "Super Thunderbolt" casting. The 80HP runs great but has rough shape mid section and lower unit. Still consider myself a " Marine Apprentice " after 47 years (learn something new every day). There may be some very slight differences in ECU programming. 75 chassis, and retain all the original looks and functionsDak Evinrude FICHT 1999 ONLY Powerhead 175 HP V6 2 Stroke 78 HOURS RUNTIME00 Mercury sells powerheads. Cant find it in 01 seloc manual have to go to 2002 and up manual. It fits and they are basically the same motors besides minor differences. I obtained a powerhead that's really nice from what I believe is a Merc 500. Carries a full one year warranty. Mercury Outboard general discussion. I can't find any serial # and it has large carbs, block is "Super Thunderbolt" casting. 5 billion) project will take seven years to enter in an orbit around the closest planet to the sun, where it will begin to unravel the mysteries of Mercury Mercury is the closest planet to the sun, and it's the smallest. Candy Crush has taken the world by storm, captivating millions of players with its addictive gameplay and vibrant visuals. Oct 8, 2018 · The 2. 75 chassis, and retain all the original looks and functions. Would a guy have to replace a powerhead to get the extra 25 or even 50 ponies out of a 3. 61-8M0125790 QUICKSILVER REMANUFACTURED 250 PRO XS DRESSED 2 STROKE POWERHEAD Remanufactured outboard powerhead, 100% new dress parts. A mechanic told me I can replace it with the powerhead from an outboard motor but didn’t know what motor. They can answer questions for any Mercury outboard motor model or horsepower including Chrysler Outboards, Force Outboards, Mariner Outboards, and Mercury Inboard/Sterndrives. Replaces 2000-2001 Mercury or Mariner 175 Horsepower 2. New Mercury Mariner Outboard 9. Mercury bought thousands and thousand of these power heads from Yamaha, and attached them to a midsection and gearcase made by Mercury. missouri quilt Aug 13, 2019 · Aug 13, 2019 I have a 2001 seadoo challenger 1800 with a 240 efi m2 engine that has a hole in the block on port side. 4 posts • Page 1 of 1. The old 70 (Chrysler) had the 3 carbs and pretty. MASTERTECH will send you a core credit check based on evaluation by the rebuilder. Jul 20, 2010 · Im facing the same issue. Marine Parts Warehouse, Yamaha Outboard Powerheads & Short Blocks phone: 270-618-5200 my account Mercury & Mariner Outboard Special Tools; Nov 16, 2002 · Re: 120-150HP Force Powerhead Swapa few things. The Mercury missions were an integral step in space exploration. Jul 8, 2018 · Hello all. Feb 14, 2008 Re: 200hp merc powerhead swap with 150hp? The power head should bolt on, but the differences are manifold. I obtained a powerhead that's really nice from what I believe is a Merc 500. With the prices of new motors these days I'm looking at getting a reman efi powerhead , was wondering if anyone has put a 200 efi powerhead onto a 150 mid and what I'd be looking at for additional parts ( ecu /exhaust porting) thanks !! Genuine Mercury OEM Long Block Assembly. REVIVE YOUR CLASSIC 4 CYLINDER MERC! The oldest, first-generation Mercury 90 FOURSTROKE engines are really Yamaha engines with carburetors596-liter in-line four-cylinder engine with a powerhead made by Yamaha. Johnson & Evinrude 2 cyl - $995 Johnson & Evinrude 3 cyl - $1,595. So, I decided to purchase a powerhead on eBay that claimed 115 PSI on each for $80 + $30 shipping. Worked like a charm and the Dockbuster 800 powerhead ran great. I'd like to swap the Merc 500 into my Mk 55 but the cylinder head casting is different and the cowl mount won't work with original cowl. Includes powerhead gasket installation set and break-in instructions. 93 30 Hp Evinrude Eliminating the Big Red Plug for Push Button Start & Powerhead Swap ! Follow th. Can anyone tell if the powerhead from a 82 merc 115 6cyl will fit an 88 115 6cyl? I see two part numbers between the two engines. I came across an 88 200 merc power head for abt the same price as I was quoted for the repair on the 150 Apr 25, 2010 Re: 93 Merc 9 (this is something I have done many many times) If you are doing a complete swap (totally intact powerhead), then at minimum you need a powerhead "base gasket".