Thanks for all the replies. I did call George at All American. He shot me a price for rebuilding my drive to a XZ. I was hoping not to have to spend that much ,but will keep that as an option.
ICDEDPPL , Was that a standard XZ drive ? Did All American build it?
T500 hps, I will keep that in mind as I am just looking at all options right now . I have heard the XR will slow me down and I hate to give up any speed. I also hate breaking drives so I may not have much choice.

The XR did not slow my boat down.

gears
 

have been offerd a pair new xz drives can anyone say how much better are they than a 2001 b1 which i have at the moment , going on 28ft 6500 -7000 lb boat twin 496ho stock or should even the xz drives have some upgrades done first , i am certain that there are millions of B1 s working fine on the back of boats but after reading all the theads on drives i am just waiting for the big bang regards paul

Someone correct me if I am wrong but I thought the XZ was a regular bravo upper (helical cut gears) with an XR lower (large prop shaft). Since the uppers are usually what fails I don't see the point in that drive.

Mercruiser Bravo Sterndrives
The latest Mercury Bravo 2002 model drives, serial number 0M10----- and above have an improved upper gear set with thicker floors and heavy duty thrust bearings. These gears are available to upgrade earlier drives. See the details at the left. This is the same gear set (aside from the input shaft) used on the X and XZ drives.
In 2006 Mercury redesigned the Bravo upper gear housing. We call it the swept-back housing. The new housing is more rigid and has improved & quieter shift characteristics.

In addition to the Bravo I, II and III the X, XZ and XR drives are all in stock.

Ask us about the new Mercury Racing integrated transom system.

See the links on the left for SternDrive pricing and other info.


Bravo Comparison Chart
Standard drive, Pre 0M
Standard drive, after 0M X XZ XR XR After 0W240000
Redesigned upper driveshaft housing , serial 0W250000 & up X X X
Steel bearing tower in upper gear housing X X X X
Steel bearing tower in reinforced drive top cap X
Near net forged upper gears, thicker gear floor X X X
Fully Net forged upper gears X
HD U-joint and gear input shaft X X X
1" vertical shaft X
1 1/4 vertical shaft X X X X
Standard prop shaft & bearing carrier X X
1 3/8 Prop shaft & billet bearing carrier X X
Net forged lower gears X X X X X

Bam Marine, gofast dot com has a chart that shows the difference in the drives. I have been trying to post it but am having difficulties. Maybe someone else can post it.




















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Order Mercury & Mercruiser parts on-line at our www.mercruiserparts.com

thanks
 

thanks i love the way you guys on offshore all ways help with everybodys boating problems. i now have a 2001 b1 upper and lower and a 2002 upper with a2001 lower think i may buy the two XZ $11000 put them on the boat and use my old drives as spares regards paul from England ps found the drive chart you mentioned

PM me if it is 1;36

Thanks

nope, 1.50...dual water p/u

It has a new owner and is located in Nebraska now. John P is a boater and knows what we need to keep us on the water. New site too: http://bravoshop.net he will help you out if he can.

What kind of boat are you running? HP.?