Mercury's XR series...What makes it an XR?

DamianJP

DamianJP

Chief Petty Officer
Joined
Mar 25, 2008
Messages
605
Hello all

Iv'e been trying to find out what the XR series is really all about and maybe what XR stands for if it does anything. What did they do differently to make it into an XR? Anyone have an history on them like how they came about.

Also whats the blackmax series too?

Thanks,
DamianJP :cool:
 
Faztbullet

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,616
Re: Mercury's XR series...What makes it an XR?

The XR is just a model designation. Just like Chevy trucks, the Sierra and Cheyenne are the same truck but the Cheyenne had more/better options/features. Blackmax is a standard engine. The XR features usually are: gear ratio,different lower unit(smaller),tuner length,advance boxes,divider plates,sometimes stator size(16amp).Difference between the two?? about 10-15 hp.
 
j_martin

j_martin

Admiral
Joined
Sep 22, 2006
Messages
7,474
Re: Mercury's XR series...What makes it an XR?

The SR series was marketed as 150 hp bass boat motors, well known to be right at the upper limit of the range that can be called 150. (162, I think) MOst of them had a higher gear ratio, smaller diameter lower unit that made them even a bit friskier.

I have an XR4. Love it.
 
C

cannonford57

Petty Officer 1st Class
Joined
Mar 5, 2008
Messages
353
Re: Mercury's XR series...What makes it an XR?

as always well said fazt and j.
 
U

ufm82

Master Chief Petty Officer
Joined
Jul 29, 2003
Messages
827
Re: Mercury's XR series...What makes it an XR?

I have read and have been told that the XR engines were saltwater engines. Stainless components where it mattered more. Is that correct?

I do know that I have 150XRi and love the engine. It pushes my sled of a center console at over 50mph and is responsive at all speeds. Love the sound when I trim up and get the rooster tail going- a nice growl that just says "Run Me"! LOL

Any input on that? I do know that my boat came from Annapolis originally and it had the XRi on it from the dealer. (It's a '93) For a 17 year old engine, it is great.

UFM82
 
Dukedog

Dukedog

Captain
Joined
Oct 6, 2009
Messages
3,245
Re: Mercury's XR series...What makes it an XR?

XRI really no relationship ta tha XR. All XR's are carb motors. XRI/EFI same same.

XR6's are kinda related ta tha 150 EFI 2.5 motor..................
 
j_martin

j_martin

Admiral
Joined
Sep 22, 2006
Messages
7,474
Re: Mercury's XR series...What makes it an XR?

XR2 is a 2.0 liter carbed motor
XR4 is a 2.4 liter carbed motor
XR6 is a 2.5 liter carbed motor
XRi is a 2.5 liter EFI motor.

None of them are saltwater motors, per se.
 
You must log in or register to reply here.
Top