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Old 24-10-2012, 11:54 AM   #1
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Merc XR2 ?

Hi All
I've attached three pictures of an engine on a rib that I intend to buy
The engine is claimed to be a 200hp Mercury XR2 from around 2000
and that's it !
Any info that you may be able to provide would be most welcome.
The guy says that he can't find any numbers on it,he runs it on 70 to 1 mix and it revs to 4800 ,but you can see that the prop is ropy (its apparently a 21'' prop) the engine is on a 6.2 m hard nose osprey rib.
Many thanks in advance for any info/tips/advice.
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Old 24-10-2012, 12:47 PM   #2
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XR2 performance

Hi,
the rpm you give doesn't allows to go this 70mph speedwith a 21 pitch prop, something wrong somewhere????
Cannot increase the size of your pictures.
Even if the engine is fitted with a 1.87 ratio gear case....
http://www.go-fast.com/Prop_Slip_Calculator.htm
be carful
Bruno
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Old 24-10-2012, 01:22 PM   #3
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70 to 1 oil that barely 1.5% ! & 4800 rpm is not enough. I'd try it on the RIB before you buy it.
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Old 24-10-2012, 01:39 PM   #4
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run!
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Old 24-10-2012, 01:42 PM   #5
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If he's using 70:1 oil, and it's only revving to 4800 with a 21" prop I'd say that there's a 99.9% chance it's buggered!
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Old 24-10-2012, 01:55 PM   #6
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If it is a 200 2.0 Xr2 (hard to tell from pics) then it has a max RPM of 6800 from memory.

It should be mixed at 32:1 using merc hi--performance blend oil (according to the engine handbook).

It is a lightweight race motor and not an ideal motor for non-race rib. Should certainly pull more than 4800 rpm with a 21" prop!.
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Old 24-10-2012, 02:07 PM   #7
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Bigger photos would be a big help in identifying the motor!
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Old 24-10-2012, 03:34 PM   #8
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Quote:
Originally Posted by ribrunner View Post
Hi All
I've attached three pictures of an engine on a rib that I intend to buy
The engine is claimed to be a 200hp Mercury XR2 from around 2000
and that's it !
Any info that you may be able to provide would be most welcome.
The guy says that he can't find any numbers on it,he runs it on 70 to 1 mix and it revs to 4800 ,but you can see that the prop is ropy (its apparently a 21'' prop) the engine is on a 6.2 m hard nose osprey rib.
Many thanks in advance for any info/tips/advice.
You are assuming the rpm counter is the correct one or the settings are correct.
Go and do a compression check, if there correct then run it or better still take the boat out. (Once you've added oil to the fuel if he is running it at 70:1). It could be running large jets which might be its saving grace although its still very lean at 70:1.
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Old 24-10-2012, 04:52 PM   #9
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Xr2

AFTER SAYING ALL THAT IF ITS ONLY £1.99 THEN ITS A BARGIN RIGHT ?
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Old 24-10-2012, 08:21 PM   #10
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Yeah it none of it adds up does it ?
He was very vague about the rpm at WOT ,said the boat was doing 48 knots and he hadn't really made a note of the rpm,but the 70 to 1 mix puts me off a bit.(lot)
The pics are cut and pasted from the ebay listing (now finished) and are much bigger on ebay but shrank when I pasted them to here ?
The item number was 150925624534
I don't know much at all about these motors but it apparently has an alien cowl and an offshore leg ?
I'd appreciate it if any of you knowledgeable chaps could have a look at the ebay pic and advise what it might be.
It allegedly comes with an invoice for a new powerhead some time in the recent past.
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Old 24-10-2012, 08:35 PM   #11
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Looks like a bit of a bitzer to me,old ridge offshore mid(pre 91) with a standard box with a later powerhead (96 on) and copy cowl.
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Old 24-10-2012, 08:41 PM   #12
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Ok
I've built rally car engines a bit like that years ago then,gathered up all the odd bits in the workshop and slung a motor together to put in a rolling shell to flog off, would go like stink but not for long !
Probably happens a lot with old race outboards too ?
So would this merc be 2 litre, 2.4 or 2.5 ?
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Old 24-10-2012, 08:57 PM   #13
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xr2

Its deffo a 2 litre 200hp xr2 power
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Old 24-10-2012, 09:05 PM   #14
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Please ,someone ?
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Old 24-10-2012, 09:07 PM   #15
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Thanks
If I buy the boat and change that engine,if its running ok is it worth anything ?
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Old 25-10-2012, 11:37 AM   #16
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worth

ill give you £500
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Old 25-10-2012, 12:54 PM   #17
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Thanks all for your advice
On the basis that this motor looks to be a spares package and the boat not being cheap enough to justify purchase on that basis I'll be leaving it where it is.
Best Regards All
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