1971 Evinrude Sportster 25hp Outboard Motor Lake Test (after crank replacement)
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- čas přidán 22. 07. 2024
- Thus motor ran very strong when I first got it on the water. it had problems at idle and dod a lot oflean popping that I couldn't tune out with the carb. It ended up having a rusted crankshaft at the uppe seal so I bought a good used crank and replaced it. It's back up and running and doing much better than before at low and midrange. Still string at the top end.
Man! You can tell that ain't no Evinrude 18. She goes!!! Thanks for the video.
It definitely has a bit more on the top end than an 18hp. I still really like the way an 18 runs throughout the full range of RPM better than these 25s, but these are fun motors. I have a video of my flamed 67 Fastwin 18 coming up too. It was a little more than 2mph slower. Still a very strong runner. Thanks for watching!
Awesome running engine .. I've got the exact same engine on my stand, electric start with about 8 hours on it.. pristine
They're awesome motors. This one was very rough when I got it. The mice had really had their way with it under the cowl. Luckily no internal damage other than the sealing surface for the upper crankshaft seal. Thanks for watching!
SMOKE'N!!! i like it!
Thanks for watching, Dale!
She scoots along great, yeah buddy! This vintage of 22CI engines are tough indeed to "dial in" at low speeds on their best day, yours sounds great. Nice and smooth at idle with no sneezing, without having to leave it rich...Cool!
Thank you! It does scoot right along. The 25s seem to give me a lot more trouble in most cases getting the low speed dialed in than the 18s even in this vintage. I believe the port timing of the 25hp makes it very finicky and less adept at running low speed. Especially true for extended periods of time. This one is running decently and is not sneezing. Does not seem to be extra rich at idle, but will just stop at low speed if left for too long and hasn't got enough torque at low speed to start the prop (at least a bronze one) from neutral unless it is running faster than I care to engage it into gear. Thanks for watching!
Another great running Evinrude! Man she moves across the water! Definitely a great day to be out on the water! Mark in Iowa.
Thank you. Yes, I had a couple of beautiful days on the lake over the holiday weekend. Thanks for watching, Mark!
@@oldjohnnyrude8404 Do you cap off the recirculate tube from the spare bypass cover that dumps into the top cylinder to get them to idle better?
@@banjoclark4675 No, I leave the recirculation tube hooked up. If I did cap it off, I'd run the tube to a catch can or back to the fuel tank. I have not found that to help enough to make it worthwhile on most of these motors. I think the carburetor on these is finicky enough that the recirculation circuit is less of a concern than the carb. Thanks for watching!
Simply fantastic!!! Thanks for the ride along.
Thank you and thanks for watching!
Nice set up
Thank you and thanks for watching!
Fantastic!
Thank you and thanks for watching!
Sounds awesome!
Thank you and thanks for watching!
That motor screams!
Yeah, it's a screamer. Thanks for watching, Sam!
Ya got her done! Nice motor Ben!
Man that boat looks like it moving a lot faster then it is. And the old engine sounds great.
The little thing is scooting right along. I'm shooting for 30mph with this hull. It has been elusive so far. I hit almost 29 with this motor once. It is consistently between 27 and 28. Moving along nicely for a 12 foot aluminum boat sitting right on the water. Thanks for watching!
Nice motor! it sure goes quick. I will suggest a velcro strap for the kill switch cord though.
Thank you! It does move out pretty well. I like to use a carabiner clip for the kill switch lanyard, but I have not put one on this lanyard yet. I hook it to my PFD or my belt loop in the boats with the clip. Thanks for watching!
Nice! Hey, what camera set-up do you have? It's vivid!
For videos on my boats with remote controls I am using a GoPro Hero8 Black. It's a great little camera. My biggest complaint with it is that the app has been very buggy and not user friendly. The video quality is good and the image stabilization is excellent. I still can get GPS speed through the camera even though it is supposed to have that functionality. The app still does not support it on this camera for some reason even though it is a few models back now. Thanks for watching!
@Old JohnnyRude ok, cool! I too am in Michigan, Saginaw Bay area, Pt AuGres. I like your videos, keep 'em coming!
Beautiful running motor.
2 questions:
What is the advantage of the bronze prop.
Did you reuse the pistons, rods and rings.
Thank you for posting.
Thank you. It did turn out to be a nice runner.
The advantage of a bronze prop is that the blade profile can be made thinner due to the bronze being a stiffer material than aluminum. The other advantage is that Michigan Wheel propellers typically have (had at least) a more efficient blade profile than the OEM props even when comparing same basic dimensions of props. Bronze props can also be "worked" more effectively than aluminum.
The downside to the bronze props is their weight which makes them tougher on gears when shifting and the upfront cost of them being higher. Thanks for watching!
That is a speedy little boat and motor combo. What do you think of Lonestar aluminum boats. I seem to see quite a few of them in AZ as opposed to other, older, aluminum boats
This little rig does move out pretty well and is a lot of fun. Lone Star boats are well-built. My dad has a 14 foot Commander that is a nice stable boat that handles and rides nicely. I'm a fan of Alumacraft and really enjoy this Aerocraft. I wouldn't hesitate to get a nice Lone Star though. Thanks for watching!
@Old JohnnyRude Very cool sir. Thank you
@@ddhh6552 You're welcome.
That thing rips! Does that year still have the older magneto or that other set up they ran in the 70s? One was for sale but i avoided it as i dont have parts for that system they ran for the few years before cdi. Thank you!
It does perform nicely. I have been very happy woth this little boat with an 18-25hp motor on it. This motor (1971) still has the older universal magneto. 1973 was the first year of the low-tension magneto which ran through 1976. On these motors, the low-tension magneto can be retrofitted with the universal magneto which I have done on two of my own motors so far and soon will be three. 1977 began the CD ignition as well as the larger displacement powerhead ~31c.i. for 25hp. Thanks for watching!
@Old JohnnyRude thanks for the info! Good to know you can retrofit them as I have had great luck with the universal magneto.
@@allanbell2283 You're welcome. I also very much like the universal magneto. Too bad the low-tension magneto on the 74-76 9.9/15. At least those can be fitted with the later CD ignition, it is just more involved.