prop choice for evinrude XP-150

[harleydude777]

Hi all....first time to the forum, I own a 1988 Evinrude V-6 XP-150 E150STLCCA
running it on a 1989 Champion 184DC bassboat...below are a few questions if anyone has the answers..

1) what is the max RPM for this motor(prop pitch choice)?
2) what size prop should be ran on this setup?
3) what pitch do you all recomend for overall performance?
4) 3 blade vs. 4 blade prop?
5) and any part numbers you might have for the props you think would work good on this outboard/boat setup?

thanks for your input...

 

[72SideWinderSS]

Re: prop choice for evinrude XP-150

Hi all....first time to the forum, I own a 1988 Evinrude V-6 XP-150 E150STLCCA
running it on a 1989 Champion 184DC bassboat...below are a few questions if anyone has the answers..

1) what is the max RPM for this motor(prop pitch choice)?
2) what size prop should be ran on this setup?
3) what pitch do you all recomend for overall performance?
4) 3 blade vs. 4 blade prop?
5) and any part numbers you might have for the props you think would work good on this outboard/boat setup?

thanks for your input...

Hi Harleydude777 and welcome to the forum,

Answers:

1) Your power packs are limited to 5800 rpms, thats all your going to get.
2) That really depends on how you are setup at this time, motor will take up to 15" dia.
3) Again, really depends on the setup
4) This depends on the intended use of the boat.
5) Once the other questions are answered, many people will have recommendations.

Information required for proper prop selection:

Dia. and Pitch of prop you are running now.
RPMS @ Wide Open Throttle.
Max Speed @ WOT. (gps is best).
Intended use for boat.

Hope this helps.

 

[jammer]

Re: prop choice for evinrude XP-150

For my older Ranger and Engine I use either the Turbo14.25x24 or the Hustler 14.24x35.

 

[harleydude777]

Re: prop choice for evinrude XP-150

Hi Sidewinder,
I will try and fill you in on what I know... the boat is currently down @ the repair shop ..Mississippi river is running a little on the low side up here and some rocks jumped out at me.... broken skag...bent prop....bent prop shaft... not good!!! anyways... I am currently running a 14.5X24 shooter 4 blade SS prop.. on (I think) a 6 inch manual jack plate...not sure where the prop is riding compared to the bottom of the boat.... @ WOT (again not sure how accurate the tach is) I would run about 4700 RPM... but man would I fly.. my buddy ran beside me and said I was at about 64-67 mph....(speedo does not work) hole shot is sort of slow but that does not bother me.... 90 % of the time this is my fishing boat... 10% pulling a tube with the kids...I guess I just want to run whats best for the motor/boat combo... top end speed is great to get me from spot to spot....maybe try and save a little gas somehow if you can... she really goes through it....thats about all I can think of right now....thanks in advance for your help....

 

[72SideWinderSS]

Re: prop choice for evinrude XP-150

Oh man, I hate it when that happens.
When you get the boat back give me a hollar, If I can't help, there are some of the best prop/setup dudes around here at iboats. Hopefully Kenny and Dale will get involved on this thread.

I recently acquired a 85 150hp and hung on my little 16' sidewinder what a ride. 4 people 3/4 tank of gas 60 gps and ~5600 rpm.

Oh, and Dale Thanx a bunch for the gaskets, I'm sill working on the 140hp hop up.

First things needed is to verify the tach and get a hold of a gps unit.
I am concerned about the WOT of only 4700 RPM, if you continue to run like that you ARE going to coke and broke your motor ( trust me on this BTDT ).

 

[walleyehed]

Re: prop choice for evinrude XP-150

That engine doesn't even begin to put out any power until you get to 5500. I am also not sure about the rev limiting power packs as I turn my 200XP over 7000RPM with the same electrical with the help of Boyesen reeds (stock reeds will not allow much over 6400)
If this is a true XP series, the limiter (IF it has one) should be 6700. The "S" in the model indicates to me that it has no limiter.
I list 3 packs for this and only 1 has the limiter (@6700).
Let's get to the business end....the best place for an OMC shooter is on your desk as a paper-weight.
According to my calculations, your tach is about 1000RPM off if your buddy is using GPS to show your speed. I have used a conservative figure of 12% slip with the shooter, which is probably not high enough but close.
If this is correct, it also shows there is no 5700 rev-limiting packs.
The actual numbers you listed calculate out to a negative 8-1/2% slip...obviously impossible. I'd recommend highly that you replace the tach with a new BRP tach as this instrument is the only one you need if engine life is important, and, we can't prop farther without an accurate reading.

 

[muchco]

Re: prop choice for evinrude XP-150

My intent is not to stir the pot, but if your 150 XP has two power packs as my 1987 150 XP has (which I am sure it does), you indeed have a rev limiters set at 5800 RPM. The OME power pack 0583114 has it stamped on it, that the rev limit is 5800. There are two power packs available for that engine from Sierra 113-3114 that has a rev limiter set at 5800. I have these packs on my XP and they cut in at 5850 like clock work. Sierra power pack 113-3112 has no rev limiter. If your interested I have a diagram that shows how to drill out and remove the limiter.
I run a 17 1/2 Larson with 1987 150XP 4" manual jack plate with the prop shaft set 4" below the lowest part of the V. I have a B&P 22 Raker that has had cup added, 1" of pitch taken out and PVS plugs installed. She turns 5700 RPM at 58.0 mph GPS 17 PSI water pressure. Boat weighs approx 2200 lbs loaded. I am going to put 2" spacers on my jack plate to get to 6" I may then be able to hit the limiter and 60 mph.
I do have an 18 and 21 pitch 4 blade Ski Prop. I use for water sports as they have a wicked hole shot.. With these props I can set the rev limiters off at will.
I hope that this helps, just my two cents.

 

[walleyehed]

Re: prop choice for evinrude XP-150

Mucho, you are correct..the book says 5800 limit on all '85-'90 150's. Where I got crossed was me taking a stock 200 (XP150 block is a stock 200block due to port timing) and I put XP heads on mine. This engine(mine) uses "NO-LIMIT" packs, so I guess I'm not sure why the 150 has the limiters other than to keep it within the 10% BIA/NMMA rule of HP.
The reg/rect and trigger are the same as the 200 I have...I'm not sure you couldn't move up to the 113-2138 packs with no limit (CDI).
That would be for a 10amp system...not sur eif it would work on the 35amp..
Sorry for the error, and good catch mucho

 

[muchco]

Re: prop choice for evinrude XP-150

No problem, I was just sharing my experince. I learned about the 114 and 112 power pack issue after I had already purchased and installed two new 114's.
I picked up the power pack drill sheet off another forum, but I have yet to try it. I think I will experiment on one of my old OEM packs first.
With my current set up if I can get too the rev limiter and 60 mph GPS by adding to 2"'s of set back I would have no need to exceed 5800. It should work as when I let my son drive and I sit in the back of the boat I can just about get there. Just need a little more levrage. Regards

 

[harleydude777]

Re: prop choice for evinrude XP-150

WOW, you guys know your stuff!!! can learn alot on this forum.. to bad my kid is the mechanic.. hell I don't even know what a power pack is. LOL
the boat is still @ the shop so will get back with you guys as soon as I pick her up... so far out of all of this I got... use the current prop I have as a paper weight...the Mech is checking out my tach to see how far off it is... he also said he will run some tests to see what prop would work best for the boat....so hopefuly when he is done with it I will have some more answers for you guys...
I just can't imagine how fast this thing will go if I was'nt hitting full max on that motor....I mean she FLYS....(or did before the rocks jumped out)

again the things you want me to check are
1) size of manual jack plate
2) height of motor on jack plate from bottom of boat (what do i measure from?)
3) speed @ max WOT and what is the RPM reading @ that time
what else do you guys want me to look @ ... will do the best I can
and again THANKS for all the help

 

[72SideWinderSS]

Re: prop choice for evinrude XP-150

See, I told you there are guru's here.

 

[harleydude777]

Re: prop choice for evinrude XP-150

Hello Guru's,
My baby is back in the garage and ready for the water... the prop is actually a Shooter 13.25 x 25 SS 4-blade ..(looks like brand new now) with this prop @ WOT I am running 4700RPM that is with the mech's tach so it is right on @ 4700

and she flys.. he can't belive how great it handles and the hole shot plus the speed... he said that for the money you will spend on another SS prop hes not sure if he would do it... no pull on the steering wheel... flys straight as an arrow.. he just says thats alot of money to get a little bit more out of her.. and his guess is a 14.5 x 22 if I would decide to get another prop... your input?
plus I am running a 6 in. manual jack plate....but there again he says he would'nt bring her out of the water anymore cause she runs so good...
What do you guys think? what would she do if I got a 3 blade 14.5 x 22 to put on her? or would you recomend another size? and what make have you guys had the best luck with? thanks for all the info.. this is fun actually fun trying to tune her to near perfect..Thanks again

 

[72SideWinderSS]

Re: prop choice for evinrude XP-150

$300.00-$400.00 for a prop compared to $2400.00 + for a re-build ?
It's a NO BRAINER for me.
If you continue to operate that motor at a WOT of only 4700 RPM you will be Re-building the motor in no time.
BTDT

 

[harleydude777]

Re: prop choice for evinrude XP-150

O.K. , how about an aluminum prop? I just don't have the money now for a SS..
what diam and pitch would you go with? and what brand would you suggest?
again thanks for all the help.....

 

[72SideWinderSS]

Re: prop choice for evinrude XP-150

I would first work with the setup.
If you do not have a water pressure gauge, that would be my first investment.
After installing the W/P gauge I would jack the motor up 1/4"-1/2" at a time until either the W/P began to fall or the speed stopped increasing or ventilation and or handling became a problem. Record RPM and MPH (gps is best) for each run.
Post data back here for evaluation.

If it were me, I would check with a local prop-shop about trading in that Shooter on a Stiletto, you may find you would not spend much more than if you bought an Aluminum prop.

You asked for suggestions here are mine. Your mileage may vary.

First Choice:
http://www.iboats.com/mall/propfind...id=106&**********=852328069&*******=265874711
Second Choice:
http://www.iboats.com/mall/propfind...id=106&**********=852328069&*******=265874711
Third Choice:
http://www.iboats.com/mall/propfind...id=106&**********=852328069&*******=265874711

 

[jammer]

Re: prop choice for evinrude XP-150

O.K. , how about an aluminum prop? I just don't have the money now for a SS..
what diam and pitch would you go with? and what brand would you suggest?
again thanks for all the help.....

I would personally suggest the aluminum prop here at iboats...called the "Hustler" from turning point.

 

[harleydude777]

Re: prop choice for evinrude XP-150

Hey Guys,
sorry it took so long to respond back...heres the deal....picked the boat back up on friday night wich you guys know...ran fine for the mech...took her out on Sat. morning.....yep you guessed it...ran like ****....I will try and explain what it was doing... at idel she would vroooom ...vrooom...vrooom about every other second...and if I took my hands off the steering wheel it would jerk it around at least a 1/4 turn on every vrooom....almost like she was running on just 3 cylinders on one side.... tried to give her gas to get to plane....picked up a little speed...but stopped @ around 2500 rpms and was just bogged down....checked the primer bulb on the water and it seemed soft...tried pumping it up and it still seemed soft...so I think it has something to do with the fuel... just spent the day around the area with the trolling motor fishing....@ about 10:00 am was going to head in went to start her up to see if it would do the same thing...nope off she took...now we probley sat for 2 hours before restart.... went to another fishing spot...trolled for another cuople hours...on restart... Vroooom....Vrooom..
vrooom... god I was pissed ..... went back loaded her up and took her right back to the mech so it would be sitting there for him on Mon. morn....he called me...could'nt belive the boat was there.... told him the problem said he would look @ it....called today said the boat is done....POWERPACK was bad
so $225.00 later...SHE BETTER RUN....does this sound right? is that the right price for that work? and now I'm worried about the prop stuff wondering if she was really running @4700 WOT with a bad powerpack is that an acurate reading on the boat? or now with the new powerpack will she run higher?
I know this is long sorry...just want to make sure you get everything...should I still try and swith out that 4 balde 13.25 X 25 for the 14.25 X 21 or should I run her again to see if there is a difference with the new powerpack? please help on this...also tommorrow I am going to decarb her I'm sure she has a lot of **** in her....and one last question...could i have put the powerpack in myself.. how hard is it? thanks again guys for your time... i just want to take care of the boat...

 

[muchco]

Re: prop choice for evinrude XP-150

Power pack is about $100.00 and two bolts and 6 plug conections and she's installed. The easiest way to have determined if it was a power pack would have been to look at the plugs when it's acting up. If it's repaired all that is water under the bridge and time to move on.
As for the rpm if you are truly running at 4700 WOT your engine is overloaded and thats not good. Just my opinion but I don't think that there is any way you can properly pull that 25 pitch prop. I would assume that your boat is as heavy as mine and with a jack plate and a healthy engine my 150XP has all it wants with a 22 pitch as I mentioned in my previousy post. Good luck.

 

[harleydude777]

Re: prop choice for evinrude XP-150

Thanks Muchco,
so I am assuming that when the mech ran the tach test and got 4700 RPM @ WOT the bad powerpack was working(at that moment) .. so when it goes bad it must cut in and out right? so 4700 is 4700 , and with the new powerpack in it, it should not change? I was just worried that if I trade in the current 4 balde for the 3 blade 21 pitch, that I would get on the water and all of a sudden be pulling 6500 RPM's or something with the new pitch. and here all along it was a bad powerpack and not the 25 pitch prop only giving me 4700....see where I'm coming from....

 

[muchco]

Re: prop choice for evinrude XP-150

Yes, you are correct in saying 4700 is 4700 and that is not good. When my power pack would cut out I could not even get 3500 out of my engine. That being said a prop change is definetly in order. Unless you have a water pressure gauge you should not raise the motor on the plate either.
You should find a local prop shop that has loaner program or a friend that has a lower pitch to try out another prop. You have a jack plate so the potential to turn a 21 - 23 pitch prop is there but without the water pressure gauge I would stay away from expermenting with prop shaft height. Every set up and combanation is different so there is no one perfect prop for all applications. It takes time and effort to get the perfect and or best set up for any application along with $$$$$. All this being said your are at least 4 pitches away from the correct rpm. If you have to buy another prop to change I would try a 21 pitch aluminum prop and that should be right in your wheel house. They are not very expensive and make a great spare. It's not going to be the best or fastest prop but it should get you to that 5500 - 5600 rpm range. It will take time, money and testing to get the ideal set up for your application. I hope this helps. These are just my thougths, take them for what there worth good luck. Regards, Muchco.