1971 Evinrude Sportster 25hp Outboard Motor Lake Test
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- čas přidán 18. 09. 2020
- I bought this motor with this Aerocraft P-12 in mind. I was looking for the most power I could muster out of the 22c.i. OMC powerhead. I still prefer my 18s for all around use, but this hopped-up high-strung 25hp version is just what I wanted for this little rig. I bought this motor non-running with a fair amount of mouse damage under the hood. it cleaned up decent and appears to be a low hour unit. I did a quick tune up 9n it last weekend in hopes of getting to run it this weekend and it worked out. She's a screamer and with a 9x11P Michigan Wheel PJ-18 prop I reached a top speed of JUST a FUZZ under 29mph. Definitely scooting in this little boat.
That 25 hp johnson makes that boat fly. I never get tired of watching these videos.
Glory to the Lord Jesus
The 22c.i.. 25hp is a very nice match for this boat. It's a fun little rig. Thanks for watching!
I have a 1971 and a 1972 both restored . I’ll never get rid of them my favorite motors . These early Evinrude’s are bulletproof as long as you take care of them . Good find
Very nice!! I'm quite pleased with this '71. I also have a pair of parts motors in '69 amd '70 that I will be working on gathering parts for to bring back to life. These are great motors. Awesome power to weight ratio. Kind if high strung for general purposes, but for this rig it is a nice fit since this boat doesn't spend a lot of time just putting around. I still love my 18s for all around use. Only about 1.5-2 mph slower and much better manners in the low end of the speed range. They will certainly keep on going with good care. I'm very happy with this find. It's a keeper for sure. Thanks for watching!
Perfect combination for your Aerocraft! What a good looking motor, great runner, and reliable in your expert hands. Hope your weekend continues to go well, thanx for sharin another "keeper" from your stash.
Doug@ the "ranch"
It is a very nice match to this Aerocraft. I'm quite pleased with it. I'd like to be able to get a little better idle out of it if possible, but its definitely a runner! I'll see if there is any way to improve it when I go through it more thoroughly this winter. This one is certainly a keeper. Between this one and my '67 Fastwin I have a couple of great motors for this boat. Thanks for watching, Doug!
You KNOW when you look back and see a nice low and flat wake far back from you that you are moving! Sweet motor! Keeper!!!
Yessir! This motor is a screamer. It definitely moves thi boat along nicely. It's a keeper. I have replaced the lower crankshaft carbon seal, cleaned up, and painted the inside of the lower pan and powerhead. Now it is finicky and unhappy. Ill.get it straightened out again, but its being a bit stubborn.
Another fantastic ride along That is a really good motor. When you paint it up it will be like new. Good luck with it.
I'm glad you enjoyed the ride. This is a really good motor. It seems to have very low hours on it despite the mouse damage. Compression is 130/130, it makes no strange noises, and rolls over very smoothly. Once the inside is painted again, it will be nice. Thanks for watching!
She is one happy runner that's for sure! For a '71 model I would say you did very well! What a great find! It's a bit cool here in Iowa as well! Enjoy your weekend! Mark in Iowa.
Yes, it seems to be a happy motor again. I'm not sure if there is any way to improve the idle quality of it yet or not. It will get a good thorough going over this winter and we will see. I know these are not famous for their idle though. These motors are bred for top end performance. It delivers that nicely. Enjoy your weekend as well, Mark.
Thanks for watching!
Nice I just finished my 1972 with electric start ( factory) had 8 hours total run time,can't wait to bring it up north and run it . 25252R hopefully it runs as good as yours does..
Perfect! Excellent motor amd with such low hours. 👌 enjoy it! Thanks for watching!
Cool you shot this on my birthday!
Cool! I hope you had a good one! Thanks for watching!
Nice motor nice run on a nice day..........she goes pretty good and sounds smooth
Thank you. It was a beautiful day and a lot of fun out on the water today. It is a smooth running motor and it likes to go. Thanks for watching!
Looking good Ben. I just sold one of my 25s today. More $ for more toys.
@@AMERICANMUSICDJMO Thank you! I saw that 25 Evinrude you had for sale. That was a sharp looking motor. Toy money is a good thing. 👍 Thanks for watching, John!
Lovely, love that sound...
Thank you and thanks for watching!
Just what I’ve been needing for my newest edition Mirrowcraft.
These are great motors. They are not cheap.and easy to find like most of my motos though. At least around here, these things command a pretty heft price tag compared to what i normally buy. It took a while for me to find this one in my price range. So many I see are long shaft and really pricey. Thanks for watching!
Old JohnnyRude a while ago I saw a 80s 25 for $40! Should’ve grabbed it. It was mint too.
I think you have a winner there....Nice and light with plenty of top end RPM. This one will never idle like its 50s cousins though, so don't take it fishing....Love that rig...
Yes, I believe I have a winner with this one too. It is a great match to this little boat. I don't expect it will ever idle as well as a pre-1968 18hp. I would like to try tonget a little better idle quality out of it, but what it does now will suffice for 95% of what this boat gets used for. If I want to take this boat fishing, I'll just go back to my '67 Fastwin, or better yet, take my Alumacraft K or my Sea Nymph with a tiller motor and have an open floor. This rig is a blast to drive around on the lake or the river though. Thanks for watching, Don!
Nice I remember one of those would push a 13' Boston Whaler pretty good
I bet it would push a 13' Whaler pretty nicely. I've always wanted one of those. Maybe someday. Thanks for watching!
@@oldjohnnyrude8404 Especially if you wax the bottom
Ooh she runs great, purrs like a kitten too, makes me want to order new coils and points and stuff for the speeditwin.
A little jealous, first nice clear air day from all the smoke, people are catching salmon today, I’m still waiting for my prop getting rehubbed, over a week now, only one place around would touch it...
Have a great weekend!
Any recommendations on a different prop for the speeditwin? Waiting for this guy to fix mine, I have a feeling gonna be a long wait and I don’t see myself being happy at the end of it(hopefully I’m wrong)...can I get something brand new that will fit? I have a 4 blade from my lark 4, it fits right on it, don’t know the pitch, but I have a feeling it’s just gonna spin the hub too, it’s no where near as good as shape as the speeditwin was...
Thank you. It did turn out to be a nice runner. Too bad the mice got inside and corroded the crap out of everything. It was great get out today here. It was chilly, but it was the first clear, calm day we have had in weeks. It stinks that you're still waiting for your prop, but it should be good to go when you get it back. I have no place close to me that does it at all.
@@TheFrogfeeder Here is the new prop for the Speeditwin from Marineengine.com.
www.marineengine.com/newparts/part_details.php?pnum=OMC0385955
It is just a lower pitch than the standard prop for the Lark. The Lark 40hp prop is a 13P and the Speeditwin is 11P. Seeing as yours is a 4 blade I wouldn't be surprised if it is a lower pitch than standard as well. It may work pretty well on your Speeditwin. If you spin it anyway with the 28hp, the 40 will certainly spin it amd it would be no good to you anyway. I would try it.
@@oldjohnnyrude8404 I’m dying to get out, but I’ll give the prop guy a few more days, he wants about half that for the job. I just have this feeling I’ll be wasting another $22 launch/parking fee if I take this old 4 blade. If 28hp spun a 58 year old 3 blade prop, wouldn’t it be easier to spin a 58 year old 4 blade, isn’t there more resistance?
Thanks for looking that up for me, This is where the boat starts nickel and diming me...I couldn’t really trade either, only the name I like, can’t beat this speeditwin cowl ;)
Oh hey! Forgot to tell you, I got all my electronic start hooked up to the console with a led button and working strong, no more damn ropes. Also Got a nice led switch/usb plate off amazon and have led nav and interior lights, and vhf hooked up now too. Maybe I’ll do a little walk around tour video of my boat :)
Very nice!
Thank you and thanks for watching!
My 1994 has a “lean sneeze”
Cough at idil runs great going up one on pilot jet
If the one size larger pilot jet doesn't fix the issue, you may need to replace the upper and lower crankshaft seals. If it is drawing air in through a leaking seal, it will cause a lean condition throughout the RPM range along with the obvious sneezing at low idle. That can eventually cause over temperature combustion and could eventually lead to a melted piston if not addressed. Good luck woth your motor. Thanks for watching!
@@oldjohnnyrude8404 thanks it’s a low hour motor was running fine still does above idle up to redline I pulled carb and going through it
Wish mine would sound and run so smoothly.
This motor has proved to be a bit of a challenge. I got it running and was able to test it rather quickly. I did discover a major leak at the upper crank seal. That ended up being a result of rodent urine corrosion. I have recently finished replacing the crankshaft with a good used one. I'm back to tuning and this one was never an easy one. I need to do a full rebuild of the carburetor. I did a cleaning and replaced the needle retainer and the bowl gasket the first time. Thus time it's getting the whole works as well as a new fuel pump. Hopefully it will be singing a beautiful song on the water again this season. This motor really sings when it is right. Thanks for watching!
Hi there, I’m based in Scotland and I’m trying to source a manual for my recent barn discovery, a 1971 25hp sportster. Can anyone help???? 👍
Fantastic motor! GREAT Video! I love it... looking for an engine for my 12' aluminum boat and was thinking a 9.9 or so... but now I think I want to go with a 25! How did you do the steering? More photos? Thanks!
Thank you. This motor, unfortunately, has a rusted sealing surface on the crankshaft for the upper seal. I have purchased a replacement crank and plan to replace it over the winter. It ran great at wide open, but was running lean in the top cylinder. The engine is still in great shape other than that.
Depending on your particular 12 foot boat, the 25 may be a great fit for it or it may be way too much for it. This boat is rated for 20hp even at the tiller. The 20hp was the highest rating for this same displacement powerhead in the late 1960s when this boat was built. This boat is not very comfortable and doesn't handle well from the tiller. With the remote controls and steering from the center bench, it is very nice.
I did a video covering the build of this boat on my channel. Here is a link if you want to check it out.
czcams.com/video/pOlLeN5aVa4/video.html
What type of oil do you use? I seen zero smoke come from that motor. Like your vids. Have a few of these 25 and 35s old Evinrude and Johnsons.
I was using Pennzoil fully synthetic outboard oil. Pennzoil stopped producing that oil. I have been using Amsoil fully synthetic outboard oil quite a bit as well with good luck. I recently bought some Klotz synthetic outboard oil to try. I'll see how I like that come spring. I always liked Klotz in my 2-stroke quad. When these motors are well tuned and warm they smoke very little even at sweeter mix ratios. Thanks for watching!
What kind of wood did you use for the transom support?
I used red oak on the inside. I much prefer white oak, but couldn't get any at the time and I was in a pinch. I know it won't last as long, but it has held up well so far. This one is pretty easy to replace anyway. I use 3/8" marine plywood on the outside for the shim pad. Sanded and multiple coats of marine poly. Again, epoxy is better but I didn't have any and I was in a pinch. Thanks for watching!
Not sure if you got a new camera or what, but the colors look absolutely stunning on this video
Really? Looks kinda washed out to me
Thank you! I got a GoPro Hero8 earlier this summer. It does take very nice video with superb image stabilization and crisp, vibrant color. The video files are a lot larger than those taken with my phone, but the finished product looks nice. Thanks for watching!
Next Saturday imma go pickup a electric start 33 hp 60s Evinrude, looks identical to my speeditwin but the cowl says electric start instead of speeditwin. Guy wanted 100 in the fb ad, offered 75, he messaged me back and said I could have for $20! He drives a hard bargain for sure.
Anyways, it looks super clean and stored upright inside, it’s gotta run...the pic he sent of the serial # is terrible, I think it’s 33853 but not 100%, and can’t tell if it’s a R or an M after. I was looking on that Leroy’s ramblings, and if it IS 3385[3] , doesn’t that mean longshaft? It don’t look like a long shaft...and what does the R/M differentiate, nearest I can think is Manual or Remote start? Lol I have no patience to wait a week dammit! Moto is SUPER DUPER clean, like brand new looking. He lives as far away from his storage as I do, so I can’t get another pic or even see till Saturday, if he don’t flake...
What's the hp limit on that boat? I assume it's 12ft? I can't find a old boat with more than 10hp limit. Ohh I got the same motor I've been messing with, top cylinder is being a paint getting good spark...
This is a 12 foot boat and it was sold as a tiller boat only with a 20hp rating. At that time 20hp was the max 22 c.i. powerhead in OMCs lineup. It handles the 25hp 22 c.i. motor very nicely and the center steering deck makes a great boat out of it. I've run the big 35.7 c.i 25hp Johnson RD on this boat too. It is a little heavy, but still works surprisingly well. Most 12 footers are about 10hp max. I wanted a deep and wide one with at least 15hp rating. I was really looking for a Model R Alumacraft of a Crestliner Commander when I found this Aerocraft. It probably should have been scrapped it was in such bad shape when I got it. I decided to put the work in and save it though. Thanks for watching!
I have a 68 18hp fastwin. Is it possible to get more hp from it?
Well, the '69-'76 25hp is the same 22 c.i. block hot-rodded to about its maximum reliable power. It spins at 6-7k and has a larger carburetor, intake, higher compression, a tuned exhaust and possibly other things I didn't mention. I'm not sure how much more power you are trying to get from an 18hp OMC. For a reliable engine, 25 is about all there is. Idle quality suffers on the 25hp version, but they will definitely go. The easiest way to get 25 hp from one is to buy a 25. You really need the whole combination of modifications to get the extra power and the lower unit uses a needle bearing on the drive shaft bearing also to handle the extra shaft RPM.
hello! i have 1976 evinrude 25 hp motor. please tell me what is corect oil gas mixture ? is a 256b62 model. 10x in advance
Your motor uses a 50:1 gasoline to oil mix ratio. One pint of TCW-3 outboard oil to 6 gallons of gasoline. Thanks for watching!
Can you recall the prop size on that I have a 74
On this boat I use a 9.25x11P prop. On my 14 or 16 footer with passengers I like a 9x9P to keep the RPMs up since that is where these 22 c.i. 25hp motors get their power. 9x10 is a decent all purpose prop for these motors. I have props from 9 to 13 pitch to fit this motor. More than 11P requires near perfect conditions and as light of a load as possible in the boat to get the best performance.
Does your boat flex going that fast?
There is a slight amount of flex in the top of the transom with the thrust, but the hull itself has no detectable flex at all at this speed. This is a very rigid little hull for a lightweight (~120lbs) 12-foot aluminum hull. It handles quite nicely for what amounts to a lightweight, deep amd wide 12-foot fishing boat with remote controls built into it. Thanks for watching!
Nice motor! It must feel like you are flying low with that thing on the back.
Thank you! It definitely feels like your moving along. This boat handles well enough clam water and light chop that it is pretty easy to get used to the speed. It really feels like it would still be fine at mid 30s, but I think that may be beyond max hull speed for this boat. If i can get it past 30 I'll be happy. I'm almost there. Thanks for watching!
I am redoing one that was my granddads, I'm missing a Piece off the cover, looks to be like the one on the front that has a 25 on it, can anyone help me
I would check ebay for the applique and also keep a look out on Craigslist and FB Marketplace for a parts motor or just a cowl of similar vintage to get what you need. Good luck with Granddad's motor and thanks for watching!
Is that a plastic pressurized tank?
No, this motor has a fuel pump and uses a single line suction tank. Thanks for watching!
I’m looking at picking up a 1975 25hp Johnson for a really good deal, but I’m wondering if you can troll at speeds of 1 to 2 miles an hour with them?
It depends on the size of your boat, pitch of your prop, and whether you plan to use a trolling plate. With a typical 14 foot aluminum fishing skiff and a stock 11P prop, 1 to 2 mph is not really achievable for any length of time. If you have a large boat, and run a 9x9 prop with a trolling plate, I would say yes. 1 to 2 mph is quite slow for anything but a small motor. I would say for that trolling speed a motor of 7.5hp or less is best. A well tuned 9.9 can probably get you there. These 22c.i. 25hp motors with crankcase recirculation are not the best suited motors to long spells of idle speed. They're great motors, but the best suited to trolling. Thanks for watching!
@@oldjohnnyrude8404 okay thanks!
I had a 14’ Lund with a 2020 25hp Yamaha and a 2016 25 hp etec and I was able to get down to 1.5 -2 mph with them but I no longer have that set up anymore. I picked up a new fishing set up for a smoking deal and It came with a 1974 Johnson 25 and I’m tuning it up a bit. I love the simplicity of these old Johnson’s and how light they are for a 25hp just don’t to spend a lot on it if it’s not going to do what I need.
Thanks for the info!
@@aaronstarlund8450 Great motors, and it may get you close with a 9x9 prop, especially with the boat full of gear and a passenger. They just aren't known for lots of happy trolling. The etec and the Yamaha have a more refined combustion process and likely will give less troubles at extended low speeds. The 18hp 22c.i. OMCs will troll better than the 25s as a general rule and the pre-1968 models without the crankcase recirculation will troll down very nicely.
@@oldjohnnyrude8404 Thank-you!! That answers my question
@@aaronstarlund8450 You're welcome.
Do you think you could wake board behind this?
Yes, I'm sure that could be done. Thanks for watching!
Why not? I learned to ski behind a 20 hp Johnson.
I would have guessed 27mph , a lighter motor seem to do the trick ! I wish you would have said something , I have a 69 Johnson 25hp for sale that I haven’t touched yet but I guess I’ll start on her this week ! Just finished 2 Johnson 6hp and sold them and sold a 62 Evinrude 10hp and finished a QD-19 and ran it in my tank and I don’t know what’s come over me , ask Ron ! Lol. Normally I do 2 outboards a week on a good week ! Lol. But 4 in 2 days ! Lol
It would have been a trick to get a hold of that '69 you have for a while anyway. It sound like you have been going thru them pretty quick, Dave. This things moves out nicely. 👍
Old JohnnyRude for some reason the small ones are selling this year ?!?! Maybe because of price or maybe they realize that the 6hp is a really good outboard or perhaps there using smaller plastic boats for duck hunting ? I don’t know and I’m not complaining , I’ve sold more 6hp this year then 4 years combined ! Go figure !
@@davekimbler2308 The 6s are great little motors. Maybe people are finally realizing that? Thats a huge jump in numbers though. Maybe because everyone has been locked down and half the country is out of work. They have time on their hands and they can't afford to buy new? Whatever it is, its good for the sellers I guess.
Old JohnnyRude yes ! I wish I had a few more , now I’m trying to sell the 5 1/2 ‘s ! Ron’s doing great with the 10’s and 18’s though ! Have you sold any ? My bread and butter are the 9.9’s and 15’s , as soon as I get one done it’s gone ! I’m down to 1- 9.9 and 2- 15’s and 1- 20 and 1- 25 !
Mr Johnnyrude, do you have a starter bracket for my 66 18hp fastwin to sell?
Sorry, I do not have one of those brackets for sale. I onlynhabe one that isn't on a motor amd it is either going on an 18 or a 25. I just haven't decided which yet.
@@oldjohnnyrude8404 it was a long shot... hey any chance you know the part # im after? It’s really hard to find on marineengines without knowing a motor that came with it, I think maybe it’s 308361? If so, there’s a bunch on eBay:) if not any ideas?
Edit: any chance you can make a short little video just to show me exactly what the part looks like? The eBay brackets are labeled for the timeframe and size, but they look nothing like the brackets for my bigger motors, so I just want to be sure I’m getting the right ones, they range in price from $20- to a couple hundred $$, some with the motors and some just the bracket but if it’s that different, I probably need the motor as well right, I have a motor for the bigger size outboards that fit the brackets I have (28hp, 35hp)
Edit #2: yeah I see the 308361 bracket on my motor, that’s obviously not it.
@@TheFrogfeeder Here is what the bracket looks like. czcams.com/video/ejV4BF0_GGs/video.html
Is this by any chance Allen lake? sure looks like it. Nice motor by the way, I just picked one up last night
I guess you stated it in the video beginning, we fish Allen often
@@jjlietzke Nice! Yes, I did state that it is Allen Lake at the beginning. I run on Allen a lot. Nice little lake and there is a spot for me to pull up on shore to swap motors when I bring several to run. I'm sure we'll see each other out there. My Aerocraft is pretty easy to spot. I also run a couple Alumacrafts. I have an FD woth controls and a Model K I use for most of my tiller motors. Thanks for watching!
@@oldjohnnyrude8404 hope to see you out there sometime, we fish Allen often. If I have troubles with my 25 sportster I may have to look you up!
@@jjlietzke If you see a 12 foot Aerocraft with a red bottom and polished sides, and mid controls going across the lake, 99.9% chance it's me. I'm trying to get around to putting a replacement crankshaft in this '71 Sportster 25hp now. I'm really wanting to get it back on the water. What year is your Sportster?
@@oldjohnnyrude8404 mine is also a 71, bought it to hopefully gain some power and speed over my 69 fastwin 18hp. My boat used to have mid controls but is now tiller steer, 15ft but wide
Mine is E25
I like the name Sportster, sounds more like for fishing, almost wanna offer you my speeditwin in trade ;)
Frankly, I'm surprised Harley-Davidson even let OMC use that name, but they used it for a few years anyway. I would have to pass on the trade offer anyway. I was specifically looking for one of these 22 cube 25s for lightweight power for this boat. I'm happy with the results. I'm glad i kept looking. I bought a couple parts motors before this one and hopefully I will have a second, earlier model Sportster as a backup also. I like these motors, but the 18s still hold the top spot. These are a bit too high strung for all around use. Thanks for watching!
@@oldjohnnyrude8404 what's the difference between the Sportster and a regular 25? I read the port timing is different plus higher compression?
Nice engine
@@MadMax-cw3pn to the best of my knowledge all of the 22c.i. 25hp Evinrudes were known as Sportster. The Johnson version is the same engine, just not given any special moniker other than being 25hp. The 25hp 22c.i powerhead does indeed have different port timing than the 18hp 22c.i. powerhead. That along with a differently weighted crankshaft, different pistons, a tuned exhaust, higher compression heads, and a larger carburetor is how OMC managed to squeeze 25 ponies out of 22c.i. of displacement in a cross flow 2-stroke. Thanks for watching!
@@oldjohnnyrude8404 thanks for the info that's great. I have a 1979 25 and a 35 HP Evinrude.
Awesome motors!
@@MadMax-cw3pn Your '79 is a larger displacement 25hp that shares its engine displacement with that of the 35hp. A bit heavier motor, but just a beast of a 25hp. 🙂👍