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-   -   XR case question (https://www.offshoreonly.com/forums/drives-lower-units/349847-xr-case-question.html)

BBYSTWY 09-17-2017 02:21 PM

XR case question
 
I have the opportunity to purchase a brand new from mercury XR case and top cap for 1000 bucks....question is can I run XZ gears in the XR case?? reason being I've heard a lot of people disappointed after the switch to XR gears and I don't want to spend all that money on gears to find out I don't like them....I've heard good things about the XZ gears so if they will fit I will probably go that route..Also I've heard the XR case is better than a standard bravo hence the basis for this thought to begin with...which begs the question...is it worth the 1000 bucks to "upgrade" to this case??

Thanks

Stewart

JaayTeee 09-17-2017 08:05 PM

The X,XZ and XR all use the same case, it will be an upgrade if you have a std bravo.... the gears will fit, X and XZ upper gears are the same thing.

BBYSTWY 09-18-2017 05:52 AM

Awesome thanks!! That'll be the plan then...XR case with XZ gears....should be a good upgrade over my stock 97 bravo hahaha

thirdchildhood 09-18-2017 06:51 AM

I don't know why anyone would be disappointed switching to XR gears. They are stronger.

BBYSTWY 09-18-2017 06:56 AM

I have a buddy that did the swap on his active thunder and he complains of gear noise and a loss of speed...idk if he's 100% accurate on that however its not the first I've heard of a loss of speed after the switch...never had experience with them so I don't really know

Stewart

billpor930 09-18-2017 07:24 AM

I replaced the standard Bravo drives on my boat with XR's and saw no difference in speed, if anything it is a bit faster.

BBYSTWY 09-18-2017 07:37 AM

Like I said I'm just going off of what I was told..have no real world experience with XR stuff so who knows lol

Keith Atlanta 09-18-2017 11:00 AM

XR's definitely make a whistling gear noise.

BUP 09-18-2017 11:34 AM

^^^^ even a certain rpms it more pronounced - its the cut of the gears for that high pitch whistle persay noise

years ago the Alpha gen 2 at 3500 rpm would have this same loud persay whistle / whine noise. When we first heard it in the industry - we thought something was wrong with the latest Alpha Gen 2 at that timeframe. It was normal and was told by Merc tech services that the new gears the way they were cut caused the whistle harmonic noise.

BBYSTWY 09-18-2017 01:23 PM

I probably wouldn't hear it over the blower whine anyway however can anyone confirm a loss of speed just from going to XR gears?? I have also been told that the XZ gears have 2 gears contacting at the same time and the XRs only have one and in this gentlemans opinion the XZs are better?? idk what to do really lol!!

Stewart


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