1990 Evinrude 150hp V6 with VRO

[magnumdeke]

Picked up a donor boat with this on it, gonna be along pic filled thread! Looking to learn this one inside and out and restore her to glory!
Model and serial #

Pics of exterior condition

 

[magnumdeke]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

More pics

Found the VRO alarm was unhooked from ground, hooked it back up, beeps once with the key on and shuts off.

 

[magnumdeke]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

Yesterday I inspected it before purchase, 90 lbs compression on all cylinders, no variance. Bright spark jumps 3/16" all cyls. Bore scoped all of em, looked bright and shiny down the length of the bore no scuffing evident. PO then fired it on muffs off of a shallow well pump, had water at the tell tale and prop, and above at a vent? Shifted in and out of forward and reverse.
Monday I would like to get out at my local gravel pit at daylight and give it a test run. What do I need to look for yet?? VRO in particular, I am a little worried because the alarm was disconnected. Also best place for a shop manual for this motor? Time to educate me about this model and the VRO system, all info appreciated. I will have a ton of questions before this is done??

 

[wolf81tx]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

Thats a good motor. I have one myself. If its been sitting a long time they are really hard to start. If you can get the alarms hooked back up. They are there for a reason. VRO's properly maintained last forever and make filling up allot easier. Before you start prime both the VRO bulb and the gas bulb. Lift the throtle lever a little bit and turn the key to on. Your alarm should make a short buzz. Press the key in to engage the choke. Hold it in for 10 seconds then turn to start. The choke is pretty slow. If your not comfortable with the VRO you can pluge the oil line going into the motor and disconnect it from the battery then premix your own at 50:1.

 

[magnumdeke]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

If the Vro from that year is reliable I would be alright with it, makes me nervous not knowing how to test it, I did check out this site,
http://www.maxrules.com/fixomcvro.html Got some info, Wonder why the alarm was disconnected, from what I can tell the PO did not run the boat much or at all, I had been watching it on craiglist since May, I was looking for a 150hp and they are like unobtanium in Mi specially in the 25" shaft, lots of 200 hp and 225's and 115's and 90's so I started talking to the po a couple weeks ago. Well last week he changed the lower fluid and got it fired and called me and said he had done that and would take it out on a water test and prove how strong it ran. i did not want the lower unit fluid changed but whatever, so yesterday the lower, prop area was covered in two cycle oil, It started and smoked and pumped water. All comes down to why was the alarm disconnected? Oh well sorry for the rambling, I will be posting all my questions related to this motor here and keeping it open. Thanks for the help.

 

[wolf81tx]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

Don't be sorry. That "rambling" is what get questions answered. The fact that you saw smoke is a good thing as long as its not a dark black smoke. Thats indicates a rebuild in your future. You should also be able to smell the oil in the exhaust. When it comes down to it our own senses can still be some of the best diagnostic tools. I checked out the site that you posted and it has some good information. Prices are a bit high but thats to be expected. You can usually find them cheaper just have to look. As long as you have that horn hooked up you will be ok. Just make sure you hear that initial chirp when you turn the key to on the first time and you know the system is working. VRO's are awesome additions to a boat. They make fill ups much easier. Don't spend any more time trying to figure out why someone disconnected the horn. As long as you checked the wiring for flaws and it's hooked up now your good. As for the lower unit covered in 2cycle oil thats not good. I am hoping the p.o. was just careless when he changed the lower unit oil. Clean it all up, pull the top cover off, slap the muffs on and start her up. Go over every inch of the entire motor upper and lower while its running to see if oil is coming from somewhere it shouldn't.

 

[magnumdeke]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

Well I found a fuel line for the choke primer broken at the barb on the carb, fuel and air leak for sure, glad I caught that before running it hard, looks like I may have float bowls leaking also. From reading on here sounds like the plastic bowls are a problem, oem the only option?? Plastic still??
Next is I am going to replace all fuel lines, any favorite online suppliers for alcohol resistant lines? Where do I get the small diameter lines for the primer and what size is it? Any online suppliers for carb kits that are reasonable price and quality? Got to get an impeller, and i would like to do thermostats, I assume those are located at the top of each head, facing out? Got to get a manual I know, trying to gain on it!!
Thanks

 

[mark1961]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

The motor is actually a 1990 model.....the OEM carb kits are cheap enough so i'd stick with those along with the floats.....both available for a reasonable sum over at boats dot net.

 

[magnumdeke]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

The motor is actually a 1990 model.....the OEM carb kits are cheap enough so i'd stick with those along with the floats.....both available for a reasonable sum over at boats dot net.

what designates the year, I was going by the po's info which wouldn't suprise me as being wrong! What about the plastic bowls? Just a gasket problem or do they warp?


I stand corrected it is a 90 thanks

 

[mark1961]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

Sounds like you've already worked it out anyway mate but the "ES" designates year.....a '91 would be "EI".

Not sure about the chambers but i would start with gaskets and decide from there.....the plastic chambers are pricey items so give yours a second chance. The cast version appear to be NLA new so you would have to source some used ones if you decide to go that way.

 

[magnumdeke]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

Well water tested today, short of wanting sink things went well, motor fired right up, had to advance throttle, choke switch for 8 seconds or so and VROOM, Took a while for it to Idle, maybe 5 minutes. I do not know how much fuel was in the tank, so I put in 30$ of premium (hit wrong button with hose wanted 87, oops) 1 full can of seafoam, and faith in the VRO, no oil added to fuel tank. She did not want to idle in gear and on take off I had to choke(prime) to add gas. Once in the power band she planed and maxed out at 39 mph on gps at 4500 rpm middle trim range, trimmed to the moon I got 5000 rpm at 37 mph. do not know what the optimum rpm range is but I am guessing it is running low. Prop pitch unknown. Leaks fuel like a sieve, ran it for a half hour at various rpm's and it seemed to run better. Satisfied that the Islander this is going on after restoration is going to FLY!!!!
List of to do's
Get this manual #507874 DONE
Carb rebuilds
fuel lines
recirc valves
filters
Thermostats
Tell tale hose mod?
Check and repair charging system (Gauge is flaky but if correct system needs work)
Impeller and housing
VRO intank filter
Figure out prop
Soda blast?
Paint
Quite a list!!!!:facepalm: Lotta learning to do on this one, next victim will be the matching 15hp kicker that came with, all in a another thread.
Thanks guys.

 

[wolf81tx]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

Ah the laudry list of things to do to an abused and neglected motor. Boat motors are actually simple motors. They are like pets though. They want attention and they want it all the time. You let it sit unused for a month or 2 and it will give you a hard time. If you use it frequently it will fire up everytime for you. Your on the right track. Your prop is actually pretty close to the right size on that boat. Optimum rpm range for that motor is between 4500 and 5500. I would wait till you get it on the boat its intended for before you start tuning your prop. Just remember an increase of pitch by 1 will lower your rpms by about 200. Higher the pitch faster speed but longer hole shot. I bought a classic boats of austin ski boat many years ago that some idiot had gone way to high on the pitch and lower on the diameter. She would go fast but it took forever to get out of the hole. I increased the size and lowered the pitch. After that she would hop out on plane fast and I really didn't loose that much speed. That boat wasn't really designed to go that fast anyway about 40-45mph. The boat I curently have my evinrude 150 vro on is a 1988 procraft competitor and I run a 14 1/4X23 prop on her.

 

[magnumdeke]

Re: 1991 Evinrude 150hp V6 with VRO

Re: 1991 Evinrude 150hp V6 with VRO

So here's a question, is this a cross flow or looper? How do you tell, what is the difference?

Rt side tilt switch and 3 hood latches= Cross flow gas hog/reliability!?
So what I have found searching says, V4's became loopers in 95? V6's in 91 and 200Hp and up in 86. Does that all add up? Therefore mine as a 1990 V6 would be cross flow.

Should I figure on 15 gallons per hour at WOT? Lots of questions in this thread I know, need em all answered!
Thanks guys!!!!!

 

[djpeters]

Re: 1990 Evinrude 150hp V6 with VRO

I'm positive my '85 V4 is a Looper... looks like this.

 

[magnumdeke]

Re: 1990 Evinrude 150hp V6 with VRO

I'm positive my '85 V4 is a Looper... looks like this.

Been searching for hours, maybe my google fu is weak, but what I have learned is you got a crossflow DJ, is that PTT switch on the right side? got the three hood latches too.

 

[djpeters]

Re: 1990 Evinrude 150hp V6 with VRO

One thing I read was if the v4 or v6 is cast into the back of the block it's a looper...like mine. I'll keep looking too...

Yeah just read a bunch of forum posts...1985 was first year for loopers in 120 & 140 h.p. the others models it looks a little more confusing. Does yours look like mine? Like the back of the block? I think they also called cross flows "bubble-backs". The block looks a lot different.

 

[mark1961]

Re: 1990 Evinrude 150hp V6 with VRO

When you scoped the bores did you notice what shape the top of the pistons were?

Loopers will have almost flat tops.....crossflows will be an irregular shape.

http://www.maxrules.com/fixtheory2.html

 

[magnumdeke]

Re: 1990 Evinrude 150hp V6 with VRO

One thing I read was if the v4 or v6 is cast into the back of the block it's a looper...like mine. I'll keep looking too...

Yeah just read a bunch of forum posts...1985 was first year for loopers in 120 & 140 h.p. the others models it looks a little more confusing. Does yours look like mine? Like the back of the block? I think they also called cross flows "bubble-backs". The block looks a lot different.

So freaking confused, my V6 looks considerably different

When you scoped the bores did you notice what shape the top of pistons were?

Loopers will have almost flat tops.....crossflows will be an irregular shape.

http://www.maxrules.com/fixtheory2.html

Will take another look, I know there definitely was a recess to clear the spark plug, brain is on overload right now, gotta stop searching the www and drink a beer maybe

 

[djpeters]

Re: 1990 Evinrude 150hp V6 with VRO

So freaking confused, my V6 looks considerably different

Then you have a cross flow.

 

[magnumdeke]

Re: 1990 Evinrude 150hp V6 with VRO

Pics
rear

Left

Right

Air box

Crossflow I believe