First Post - First Boat - First Motor and First Stupid Question

[WA-Newb]

Re: First Post - First Boat - First Motor and First Stupid Question

Transom appears to be o.k. from what I can tell..and my uncle who does know boats said it was good as well.
He was surprised today when i told him the water in the lower unit story...he had gone through all the gears a few times when it was running while we looked it over and said it shifted fine. Apologized for not looking at the oil in the unit but said it was in a barrell so couldn't do it in the amount of time he had and even if there was a leaky seal it would still be worth the money to get the boat.

Guess I will take the advice on doing compression checks asap now...I think my neighbor can help me with the guages etc.
I did read about fogging the pistons to get better readings and oiling the rings...since this has been recently run for over ten minutes would I gain anything by doing that? i would think I wouldn't but thought I should ask anyway.

As for the other boat...I am scrapping that idea now for sure. One boat project I can't handle is more then enough for me at this point...lol
And I called around a few boat places and friends...they all said to stay clear from the old OMC outdrives which is what that boat had.

Hopefully tomorrow I will have compression results...at which point I will know how far to go on this lower unit.
Thanks.

 

[SeaKaye12]

Re: First Post - First Boat - First Motor and First Stupid Question

No need to put oil in the cylinders. You are looking just for baseline figures; the PSI itself is not as important as the equality between cylinders. You want all cylinders to be within 10% of each other. Chances are you will get better numbers after the engine has been run for a while.

I didn't realize that you had already had the 100 running and had observed the shifting as normal. That's great news! Knowing that...and if you get good compression numbers....there will be a light at what I thought was becoming a very long dark tunnel

Chuck

 

[WA-Newb]

Re: First Post - First Boat - First Motor and First Stupid Question

Ok so here are the results of the compression test...I am not sure what to make of it though.

Motor hasn't been started in a week...and before that many years.
First run - dry pistons
1. 78
2. 99
3. 93
4. 95

Second run - Oil squirted in pistons
1. 118
2. 120
3. 120
4. 128

So when it was dry it was not in the 10% range but wet it was close.
I figure now I will add some gear lube and let it run for awhile tomorrow in a barrel then re-test...good idea? or does it matter?

I also tested the 35 HP which hasn't been started in an unknown amount of time but at least a year and came up with
Dry test
1. 115
2. 100

Wet run
1. 127
2. 125

Any info on these results would be appreciated.

Thank you.

 

[SeaKaye12]

Re: First Post - First Boat - First Motor and First Stupid Question

heh....better than I expected; that's for sure. You've got two runners there.

Cylinder #1 on the 100 has an issue; the fact that they all come up substantially after the squirt of oil indicates leakage past the rings. After some serious run time you might see those numbers get better. You could also do a de-carb at some point in an effort to free up the rings. Now that you've got a baseline...re-checks every now and then will show if things are improving.

I'd say it's time to go boating

Chuck

 

[WA-Newb]

Re: First Post - First Boat - First Motor and First Stupid Question

Yeah it was better then I thought it would be

I am guessing a "de carb" would be adding some additive to get the carbon off the pistons? Just a guess...am I close?

And do you think I can just add new lower unit lube and safley run this boat on the water for about an hour to test it out...even though there will still be some mixed sludge in there?

I have read and searched and seems some people (including the boat shop locally) think a little milk in the lower unit is ok for short runs...but I am thinking it may not be ok since this is Elctric shift and has all the extra sensitive parts...solenoids...pump, screen, wires etc.

If I can add some Type C oil.. and take it out like it is I think I would like to do that just to see if it floats at this point...lol

I may be over worrying about the sludge / milk but really dont want to harm it and am not ready to tear into the lower unit yet...maybe when my manual gets here in a week or so...and that's a big maybe still...lol

Thanks.

 

[oldman570]

Re: First Post - First Boat - First Motor and First Stupid Question

The local dealers should have a can of Power tune that works for decarbing pistons and rings. Just spray in the plug hole and let it set for a half hour then fire it up. It will smoke till the Power Tune is burnt off and will clear up. It can be used to help clean the carbs also. Be sure to recheck the compression after you have run it to see if the reading on the #1 piston has improved.
Oldman570

 

[SeaKaye12]

Re: First Post - First Boat - First Motor and First Stupid Question

If it were mine I would refill the gearcase with C and give it a go. It's my understanding that marine versions of the HiVis oils are formulated to tolerate small amounts of moisture better than conventional 90 weight gear oil. I would assume that C is formulated that way as well.

Run it for a while and then drain it and have a look. If the boat proves out and you start viewing it as a keeper you could look at properly cleaning and re-sealing the gearcase.

You do hear of people flushing with deisel oil or ATF or Marvel Mystery Oil mixes; but I wouldn't do that on a Selectric without getting the go-ahead from someone who really knows those gearcases. They are a different animal and I doubt that such procedures would be encouraged.

Everyone has a different idea for proper de-carbing. If your boat has a built-in gas tank I would not put additives in there. Who knows what sort of crud it would free up. Hook up a clean portable tank instead.

The best way is to somehow get the cylinders vertical (engine tilted up; boat on a hill....) and pour Seafoam or equiv directly into the cylinders and let it soak in there. Do it with the pistons near the top so the liquid soaks past the rings.

That's not something that everyone agrees is appropriate. If it were me...if the boat runs decent I'd run it for a while with the best oils you can find and see what happens.

Chuck

 

[WA-Newb]

Re: First Post - First Boat - First Motor and First Stupid Question

Didn't do to much today but did end up buying a key for the 35 HP ($8 at local marine shop)....hooked up a battery...the muffs and the gas line...turned the key and it fired right up

So at least now I know this one has good compression and runs too.

I guess I will need to figure out
a) where to get the missing / broken parts for the shifter
and
b) how to install them...I am guessing I will need to take the power unit off and that doesn't seem like a good job for a newbie though.

 

[SeaKaye12]

Re: First Post - First Boat - First Motor and First Stupid Question

Here's a tip that might help you in your parts search:
(1) Pick the part you want to search for. As an example..lets look at the shift lever itself; part #0384477 (from Marineengine.com)
(2) Go to ********** and put that number into their search field. You will get this page
http://www.**********/parts/detail/evinrude/B-0384477.html

From that...their site will show you all the different engine applications that use that part! Cool; eh? Armed with that information you then can search all over for not only a 1977 35HP Evinrude...but any of the numerous other models that use that same part.


As for installing everything...shouldn't be too hard. Those engines are so common; I doubt it would be too hard for you to locate a similar one to take a look at and maybe take pictures of.

Chuck

PS: the asterics...... b_o_a_t_s_d_o_t_n_e_t

 

[oldman570]

Re: First Post - First Boat - First Motor and First Stupid Question

Did you get my long PM sent to you? I was having trouble with my internet connection. If not I'll sent it again.
Oldman570

 

[WA-Newb]

Re: First Post - First Boat - First Motor and First Stupid Question

Sorry Oldman..nothing came through

And thank you Chuck...that link and way of looking up parts will really help me I am sure.