Topic: 64 Evinrude 28HP pops out of reverse – Page 2

This topic has 22 replies, 5 voices, and was last updated 1 year, 5 months ago by bob-d.

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July 20, 2023 at 11:12 am #278297
The Boat House
Participant
bob-d wrote:

Don, when I shift into reverse with my Simplex that I rebuilt with all new parts (below), if I don’t hold it in reverse it comes out of gear.
Good point…..let me disconnect the cable, and just try using the shift lever on the motor and see what happens.
Only problem in upstate NY, I have to wait for the darn rain to stop. It has been ridiculous, every day for weeks.

Thanks,
Bob D

The rain in Maine
has been
exactly the same.
Tubs.
July 21, 2023 at 12:54 pm #278323
bob-d
Participant
US Member
Tubs, I pull my boat up on a ramp in front of my camp. The water level on Lake Champlain in now so high, I no longer have any beach area left and had to pull the boat out and leave on a trailer. Horrible weather summer. Never saw anything like it.
Bob D
July 21, 2023 at 1:14 pm #278324
bob-d
Participant
US Member
REVERSE FIXED….. ok Bill W / Don wins the prize for this one. Thanks gents.
It turned out to be the shift shaft horizontal adjustment. Pulled the boat out of the water, looked at the shifter and it wasn’t going into the forward indent properly (although forward was never a problem). Loosened the bolt and it popped properly into forward . Well I guess the rest of the geometry fell into place, and now reverse is fine. Should have looked there first, but needed the forum to jog my memory. Thanks again everyone.
Now on to my next problem. Boiling hot water coming out the discharge. I’ll start a new post for that one.
Bob D
July 21, 2023 at 5:59 pm #278331
fleetwin
Participant
US Member - 2 Years
Cool, glad it was relatively simple. You mention very hot water from the discharge, is the block getting hot?
July 21, 2023 at 7:03 pm #278332
bob-d
Participant
US Member
Don, a little back history. Motor started out as a 1964 28 . I replaced the block with a 67 33HP . Don’t asked what was wrong with the 28 block..

..more money than brains!!

It’s a newly machined block with .020 pistons, NOS crank, all new bearings, seals etc. it’s still in the break in period.

The case was hot tanked after the machine work at Jay’s Block Shop in Doyle Tennessee. He did great work, highly recommended.

After a ride the other night noticed the water coming out (good flow, new impeller) of the discharge was steaming. Block very hot, cylinder head, not bad and lower unit scorching. The last time I had this problem (10HP 58 Johnson) with the lower unit cooking you told me to pull the head and check all of the circulation passages, in which I found that one of them under the head was totally clogged with the residual carbon of the old straight 30W oil.

I’m a bit worried since the block was recently gone through that it will probably be clean when I get it off. I’m thinking maybe a piece of impeller broke off and is in a passage?

I’m planning to pull the lower unit tomorrow and see if I can get air or a hose and see if the water circulation circuit flows. Possibly I screwed up something in the assembly process? It rotates, easy, good compression.

The saga of this motor continues.

Thanks, Bob D
July 21, 2023 at 7:12 pm #278335
The Boat House
Participant
bob-d wrote:

Tubs, I pull my boat up on a ramp in front of my camp. The water level on Lake Champlain in now so high, I no longer have any beach area left and had to pull the boat out and leave on a trailer. Horrible weather summer. Never saw anything like it.
Bob D

https://youtu.be/wawUh05KJUE

https://youtu.be/wawUh05KJUE
July 22, 2023 at 8:31 am #278350
fleetwin
Participant
US Member - 2 Years
OK, so engine temp seems normal, correct? It could be nothing more than the hot summer temps we are enduring now, especially if water flow seems normal. The exhaust housing gets real hot though, correct? Does kind of sound like the issue we uncovered with your 10hp, there is that little bleed hole on the bottom cylinder’s cooling passage that is supposed to cool the exhaust housing. But, you mentioned the block was dipped/tanked, so you would think that would have gotten cleaned, but you never know. I wish I had one of those blocks to help locate that hole for you, do you still have the original block for investigation? Normally, I would say this is no big deal, except I don’t want your beautiful paint job getting ruined on the exhaust housing. I guess I might try running the engine at night, or early morning before it gets too hot out to see how it behaves then before getting to concerned.
July 22, 2023 at 8:47 am #278352
bob-d
Participant
US Member
Don, unfortunately I was running the motor during a cool late evening when I noticed the steam/ water discharge out the exhaust. I really don’t know how to gauge if the block and head are at the correct temp other than by hand feel? I didn’t bring my infrared digital temperature gauge on vacation.
I have the original 28HP block and will poke around to see what the bleed hole looks like. Will post some pictures of the underside of the block for you to take a look at.
Thanks,
Bob D
July 22, 2023 at 11:06 am #278359
fleetwin
Participant
US Member - 2 Years
Well, I’m not sure I would worry about what appears to be steam… Perhaps it is alot of condensation from warm/wet summer climates. These engines don’t have a thermostat so should run relatively cool, perhaps warm, but never hot. The exhaust manifold should also be relatively cool/warm. The hand/feel method is usually sufficent in these cases. How about the top of the exhaust housing, just under the powerhead, how does that feel?
July 22, 2023 at 12:13 pm #278360
bob-d
Participant
US Member
Don, the exhaust manifold seemed ok, but the exhaust housing under powerhead was blistering hot. Exactly the same as my 10HP 58 Johnson.
Here is a shot of the underside of the 28HP . The only bleed hole I could find is shown with the pointer.
I guess the next step is to pull the 33HP head and check the bleed hole?
Thanks,
Bob D
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