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1996 Ocean Pro 150 One cylinder compression 28#

N

nymack66

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"Very good, I just brought a s

"Very good, I just brought a short block from Vaughn he is nice guy for sure. Post pictures of your project its very helpful in the decision process from miles away. Use photobucket and add the links to this blog.
For example I see the power head inside I let you know if you need a acid boil etc.
The most important thing to remember is replacing a power head is fixing the result of a failure not a failure in itself, you MUST find the under lying problem and fix it if not plan for failure again. Mine was a loose connecting rod bolt on #4 result in spun bearing and seize engine.
Question what was your problem ?
Good luck and keep us posted."
 
"I suspect the reason for my p

"I suspect the reason for my problem is that the engine set up for about 5 years after a rebuild. The previous owner feel ill and never ran it. I suspect the rings got rusty. Only one cylinder (#1) showed any signs of wear. The crank, rod's & bearings show no signs of overheating. I just rebuilt all the carbs and I should be getting the block back from the machine shop on Friday. I just hope I can get it back together right. I will take some photo's in the next day or two and post my progress. Thanks for the words of encouragement."
 
"Although you mentioned that f

"Although you mentioned that fuel flowed thru the carb jets properly........

Sitting that length of time, the carburetors are surely fouled somewhat.

Be sure to dismantle, clean thoroughly, and rebuild all carburetors with complete carburetor kits to avoid a powerhead failure repeat.

Fouled carburetors result in a lean running (improper lubicated) engine..... piston damage etc."
 
"Here's a picture of one o

"Here's a picture of one of the pistons showing the rings stuck basically all but one had at least one ring stuck. Additionally I found an excessive amount of RTV on the heads. In fact most of the small water ports were plugged with RTV.
287918.jpg
"
 
"I got the block back from the

"I got the block back from the machine shop and got the pistons installed and the crankshaft in tonight. Man getting those main barrings to line up with the pin was the worst thing about it. So far so good I haven't broke anything and everthing is going together like the manual says. Tomorrow flywheel and carbs.
287921.jpg
"
 
"I've got everything put b

"I've got everything put back together and I'm wondering if I should go for a start. I do have a simple question! Do I need to do any type of timing or anything? Is it as simple as just putting everything back in their original position. I found tdc and place my pointer, but there's got to be more right?"
 
"u should be ,ok...however,...

"u should be ,ok...however,....a 5000 rpm timing check,is a MUST.....fr now on,u need to do a 'de-carb'...either by solution,in fuel tank,"preferably"..or a quick,shock treatment,'less desirable'but functional...."
 
Don't forget to double oil

Don't forget to double oil...25:1 is the recommended break in oil ratio.

Search "break in". There are many posts on the procedure.
 
Thanks for the responses but I

Thanks for the responses but I don't do a 5k timing initially do I? All the research I've done on break in period say not to go over 3k.

I will definately do double oil as suggested.
 
"When you do your link and syn

"When you do your link and sync (which should be mandatory after a rebuild) you will set the WOT 5000 rpm timing statically.
There is a famous post by Joe Reeves that is widely accepted to be the best way to statically set your WOT timing. Someone will chime in and post a link to it, maybe even Joe himself!!! Be sure to disable "Quickstart" or the timing settings will be off.

As you break it in, you will run at WOT for short bursts.
I would have a timing light with you on those runs, and check it then, while on the water.

Also, be very familiar with the adjustment and workings of that particular setting, so that you can make any required changes right there, re-checking as needed. Get it set once, and it's done.

By the way, it looks like you are doing a fine job on this, from looking at the pics, and reading your posts. Sure is a pretty cylinder...."
 
"Timing of this engine is not

"Timing of this engine is not done at 5000RPM, but 'static'(engine not running) with the assistance of the 'engine analyzer'."
 
Ahhhh "static" feeling

Ahhhh "static" feeling a little silly at the moment. Hopefully someone will post to a thread. Off I go looking for it. Unfortunately I can't get my hands on a analyzer.

Thanks so much for the tips. This weekend is the day! Fish On or rebuild up in smoke!!
 
"Here's a couple more phot

"Here's a couple more photos of somewhat the finished product although still in two halves.
288601.jpg
"
 
"On Your engine it is an optic

"On Your engine it is an optical sensor triggering the power-pack. Normally the PP is activated when the 'beam' is cut off, but at quick-start it is activated when the beam 'opens'.
To set the max timing, the 'engine analyzer' activates the optical sensor, the timing wheel is set at the specified timing advance after the arrow have been synced to TDC. Then the 'HIGH' tab on the optical sensor is moved until light turns out in the analyzer, which is when the beam is 'closed'. In principle similar to 'Joe's' description of the 'old' system, but You need the analyzer to find out when the light beam is 'closed'.
It may in emergency be done with a timing light and running engine, but be careful that the blinks from the timing light does not cause false signals into the optical sensor."
 
"[url=""]http://www.maxrules.c

"http://www.maxrules.com/fixomcoisignition.html

with a CDI power pack you don't need the analyser.

"A breakthrough at CDI Electronics has allowed the use of microprocessor digital control circuits to handle the timing, QuikStart, S.L.O.W., rev limiter and data logging inside the power pack. This allows the timing to be set using a timing light, remote starter, spark gap tester, piston stop tool and a jumper wire.

With these new digital power packs, you disconnect the port temperature switch/sensor leads and use a jumper wire to short the tan temperature sensor wire to engine ground. Once you have verified the timing pointer using a piston stop tool (or a dial indicator), connect all spark plug wires to a spark gap tester, and connect a remote starter to the engine and a timing light to the No.1 spark plug wire.

When you crank the engine over with the remote starter and check the timing, you will notice the timing is set to approximately 4°- 6° ATDC (after top dead center). By advancing the throttle all the way and rechecking the timing for WOT (wide open throttle), you should see approximately 19° - 20° BTDC (before top dead center). Without this timing feature built into the power pack, you would not be able to easily set the timing for idle or WOT without the Johnson/Evinrude optical diagnostic tool.

Another nice features allowed by the digital circuitry include the ability to compensate for a bad temperature switch, a smoother rev limit, customized rev limiters and special timing curves.""
 
"yep,...i guess i did not noti

"yep,...i guess i did not notice exact eng,....ign analyzer is,the correct method......u set both idle and hs timing,w/this tool....sorry for the confusion..."
 
"For 'idle' You do not

"For 'idle' You do not need the tool, only the boat launched . engine running at idle in gear. Then adjust the 'Low' tab to get desired idle."
 
"true...but,since i have the t

"true...but,since i have the tool hooked up,..i always set to specified idle timing per the service manual,and go fr there."
 
"Hey Congrats on tackling a pr

"Hey Congrats on tackling a project of this magnitude all by yourself. Hats of to you, I'm nowhere near ready to take on a project like that, but someday.

Great Job and GoodLuck.

PS. Take a kicker motor with you for safety on the maiden voyage."
 
Congrats on a job well done.

Congrats on a job well done.
Does anyone have the part no. of the OMC optical dignostic tool??
 
"that lil gadget,..cost me 350

"that lil gadget,..cost me 350.00 5 yrs ago..if u really want it,..i'll look it up for u,.just send me an email so i rem...i'm hm now."
 
"OK! Got the motor back togeth

"OK! Got the motor back together with help from my buddy Tom and got it remounted on my Robalo. Doubled the oil drove it around to make sure it mixed good in my tank and went for a start and she came to life on the second try. Yeah! I ran it for only 2 minutes then shut it down for about 5 minutes, started it again for 3 minutes and everything seemed to be ok? She idled fairly well with want seemed to be a suttle run up of RPM's to about 1400 from time to time then settle back to 1000-1100. I'm worried about my next step I don't know exactly how to break this in and set the WOT. Can I do this simply with a timing light. I've read so many things I thoroughly confused.

SO CLOSE!!!"
 
"Send me a PM with your email

"Send me a PM with your email address I will email you some instructions Power Head Exchange sent me.
I did everything like you did, timing I took it to the Dealer cost 120 dollars, they place it on a Dyno and set the timing. You can with a timing light on the Lake but be careful."
 
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