formulaboatsforum.com
October 31, 2014, 10:01:34 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News:
 
   Home   Help Search Calendar Gallery Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: Bravo 3 vs. Bravo 3X Drives  (Read 2543 times)
FormulaFanMN
Hero Member
*****
Offline Offline

Posts: 1650


View Profile
« on: April 01, 2009, 02:53:26 PM »

I was wondering what the differences are between the two drives ?  Looks like Formula installs the 3X on the 496 HO engines ...

Thanks !

Logged
Castines
Forum Owner / Administer
Administrator
Hero Member
*****
Offline Offline

Posts: 2551

2006 34 PC Loaded


View Profile
« Reply #1 on: April 01, 2009, 02:55:11 PM »

Shaft size is the same cause i use XR props Shocked
« Last Edit: April 01, 2009, 06:16:19 PM by Castines » Logged

2006 34' PC T8.1L BrIII's Raymarine Network/Radar
Boating in the Atlantic City area
Seas-The-Day
Full Member
***
Offline Offline

Posts: 145


400 SS 2005 Sport Cruiser of the Year


View Profile
« Reply #2 on: April 01, 2009, 03:31:21 PM »

Try this:

http://www.perfprotech.com/store/articles/bravo3-specs.aspx

http://www.perfprotech.com/store/articles/bravo3x-specs.aspx

Logged

A bad day on the boat is better than a good day on the golf course!
FormulaFanMN
Hero Member
*****
Offline Offline

Posts: 1650


View Profile
« Reply #3 on: April 01, 2009, 03:45:43 PM »

Thanks for the spec info.

To me the uppers look different, but other than that, are the two drives "the same"  ?
Logged
toofast
Hero Member
*****
Offline Offline

Posts: 3046


Instigator


View Profile
« Reply #4 on: April 01, 2009, 07:05:48 PM »

X are overall supposedly heavier duty for increased horse power apps...
Logged

2008 31PC - Twin 496 Mag w/BIII Drives
Seas-The-Day
Full Member
***
Offline Offline

Posts: 145


400 SS 2005 Sport Cruiser of the Year


View Profile
« Reply #5 on: April 01, 2009, 07:30:55 PM »

That is my understanding, as well.
Yet, when I read the spec sheet -- while it states the X is for higher HP -- there is only 3 lbs difference between them.

I did not study it long enough to identify where the X gets its extra strength.
Logged

A bad day on the boat is better than a good day on the golf course!
toofast
Hero Member
*****
Offline Offline

Posts: 3046


Instigator


View Profile
« Reply #6 on: April 01, 2009, 07:47:03 PM »

Mmmmm...could it be marketing at its best?
Logged

2008 31PC - Twin 496 Mag w/BIII Drives
Castines
Forum Owner / Administer
Administrator
Hero Member
*****
Offline Offline

Posts: 2551

2006 34 PC Loaded


View Profile
« Reply #7 on: April 01, 2009, 10:27:23 PM »

it could be in the casing.  3 pounds of aluminum alloy is heavy.  case could be thicker to withstand the extra HP.
Logged

2006 34' PC T8.1L BrIII's Raymarine Network/Radar
Boating in the Atlantic City area
FormulaFanMN
Hero Member
*****
Offline Offline

Posts: 1650


View Profile
« Reply #8 on: April 01, 2009, 11:04:20 PM »

What I can see/read is that the 3X has in the upper unit gear set over the Bravo 3 "steel chimney bearing supports, reinforced ribbed top cap".

All the other specs are the same, oops. Max HP goes from 400 to 450 on the 3X.

Logged
Seas-The-Day
Full Member
***
Offline Offline

Posts: 145


400 SS 2005 Sport Cruiser of the Year


View Profile
« Reply #9 on: April 02, 2009, 07:16:47 AM »

In comparing the specs a little closer, I do see a reference to a HD U Joint, as well.
I suppose that would make some sense for being a secret ingredient.
Logged

A bad day on the boat is better than a good day on the golf course!
FormulaFanMN
Hero Member
*****
Offline Offline

Posts: 1650


View Profile
« Reply #10 on: April 02, 2009, 10:43:43 AM »

I did see that also.

What's amazing is how Volvo can use the same drive for both the 375 and 420 HP version of their 8.1 engines, where Merc uses the 3x on the 425 HP version.

Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines
SMFAds for Free Forums
Valid XHTML 1.0! Valid CSS!