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Mercury Outboards. You can't have a section on outboards without dedicating a subforum to Mercurys.

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  #1  
Old 11-03-2007
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Default Mercury XR2, XR4, XRi

Does anyone know much about these three motors? (150hp)
Differences between 2L, 2.4L and 2.5L, power, torque, durability, fuel efficiency, best sound, anything pretty much.
all info appreciated,
thanks.
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  #2  
Old 11-03-2007
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Default Re: Mercury XR2, XR4, XRi

The XR series actually had min 10% more power than rated or compared to base 150's. The XR4 has way more torque than XR2 which relates to acceleration. The XR2 is a hopped up 150 2L and the XR4 is a detuned 2.4L. The XR2 revs quite high to make more power and is maxed out due to displacement. The XR4 has huge modification potential.

The XR2 would be my choice for your boat as it weighs less and has the full size gearcase which is durable. A buddy has an XR2 on his Valero and it runs 72 mph.

The XR2 also has iron sleeve cylinders which means it is easily rebuildable. The XR4 or newer blocks are chromed and if you have a problem a new block is required.

Coles Notes: well maintained XR2 with no less than 140 comp using a quality gauge.
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  #3  
Old 11-05-2007
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Default Re: Mercury XR2, XR4, XRi

LiveLegend, you still not found a good 150 yet?
Bobs right about the XR2 although a detuned 2.4l (XR4) can also be fun with some minor mods... remember, my 200 is the same block. Also, careful with the smaller gearcases (as my buddy grenaded his this summer with a nice pretty window in the side and everything) which the XR4 has, replace it with a CLE or something.
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  #4  
Old 11-05-2007
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Default Re: Mercury XR2, XR4, XRi

Any of these motors would be fine for your boat. there are plenty of people pushing big mph #'s with 2.0 litre. And you can sleeve a chrome bore motor if you screw up a cyl.
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  #5  
Old 11-08-2007
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Default Re: Mercury XR2, XR4, XRi

Thanks for the info/advice
Theres a '87 XR2 at topgun that im interested in, i'll probably swap my motor for it but not until spring, if its still there...
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  #6  
Old 11-09-2007
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Default Re: Mercury XR2, XR4, XRi

Quote:
Originally Posted by livelegend View Post
Thanks for the info/advice
Theres a '87 XR2 at topgun that im interested in, i'll probably swap my motor for it but not until spring, if its still there...
Why? Prices go up in the spring. Go in when its snowing and buy it.
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  #7  
Old 11-09-2007
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Default Re: Mercury XR2, XR4, XRi

pauls already told me the price so thats what it will be in the spring, but its a hassel getting it out of the garage and it might not fit once the new motors on with a jackplate.
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  #8  
Old 03-22-2008
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Default Re: Mercury XR2, XR4, XRi

Some more info on the XR series.
I was recently informed by Paul at TopGun Marine that the xr2 weights about 40lbs more then the xr4. Reason being that the xr2's block is made from steel, and the xr4 is cast aluminum.
Is this true?? because from what thinksun says the xr2 is lighter and made from different material than what paul mentioned.

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  #9  
Old 03-22-2008
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Default Re: Mercury XR2, XR4, XRi

I looked at that XR2 that Paul has, it's a nice motor and I was interested in it before I fell into my XR4 that I picked up out of the south. The XR4's were around 175 hp stock and all it takes is some carb work and a few other little tricks and you have a 200. The 2.4's are very durable motors and there are tons of parts for them. The only down fall to an XR4 is the small gearcase. They come stock with the 4 1/4" gearcase and are prone to blowing up, especialy with surfacing props like a chopper. The mod is either a big gearcase, 4 3/4" like a 200 has or a performanece one like a CLE. I got lucky, the person I bought mine off, blew up the stock case in May 07 and had it replaced with a big 200 case. Very happy about that, I think the 2.4 is a better platform to start with because of the expandability. Hulls are cheap, motors arn't. If you get rid of the winder one day, you can keep the 2.4 for the next project and have a damm nice motor to work with. Just my opinion.
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  #10  
Old 03-22-2008
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Default Re: Mercury XR2, XR4, XRi

Quote:
Originally Posted by skidoodave View Post
I think the 2.4 is a better platform to start with because of the expandability. Hulls are cheap, motors arn't. If you get rid of the winder one day, you can keep the 2.4 for the next project and have a damm nice motor to work with. Just my opinion.

I saw the thread over on s&f about the xr4 you got. Very nice find.

You say that the xr4 is better because of the expandability, so by that you mean that you can hop-up the xr4 even more, but im guessing that the xr2 is already at its potential or does it also have potential in future mods as well? Also, is there a significant difference in finding parts for these two motors?
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