Bravo one gear ratio??

BIG RED 89 STINGRAY · Mar 12, 2013

Hello All,
I Don't see the gear ratio stamped anywhere?
Bravo One Drive on an 88' Stingray. 0B756888 is the serial # on the Drive itself ?? Any body have any data on this Drive?
Google is not showing up anything...

Don S · Mar 12, 2013

Re: Bravo one gear ratio??

Are you sure it's a Bravo I ? The 0B756888 serial number you posted is for an Alpha I with a 1.50 gear ratio.

Bondo · Mar 12, 2013

Re: Bravo one gear ratio??

BIG RED 89 STINGRAY said:
Hello All,
I Don't see the gear ratio stamped anywhere?
Bravo One Drive on an 88' Stingray. 0B756888 is the serial # on the Drive itself ?? Any body have any data on this Drive?
Google is not showing up anything...

Ayuh,.... Welcome Aboard,... What Motor's ahead of it,..??

Got a picture of the drive,..??

Hoosmatroos · Mar 13, 2013

Re: Bravo one gear ratio??

Alpha one drive

Bravo I drive

Difference is clear

TilliamWe · Mar 13, 2013

Re: Bravo one gear ratio??

Hoosmatroos said:
Alpha one drive
View attachment 185077

Bravo I drive
View attachment 185078

Difference is clear

Only after 2005, which is what your Bravo picture is. Before 2005, they dn't have that angled rear cover on the upper unit.

For example, here's a 1997 Bravo 3.

On more than one occasion, I have had to walk a bit closer to tell a Bravo One from and Alpha One Gen 2. For example, at the top of this page, there is a "toolbar" with links to iboats' store. Can you tell instantly, that the picture for "Mercruiser Boat Motor" is a Bravo?

BIG RED 89 STINGRAY · Mar 13, 2013

Re: Bravo one gear ratio??

Thanks for the quick responses guys. Sorry it took so long to reply, I work 2nd shift.
Here are a few pics. (hope they load correctly?! lol)

SANY1173_zps572fa120.jpg Photo by DARRENB1977 | Photobucket

1_zpsce18a932.jpg Photo by DARRENB1977 | Photobucket

SANY1180_zps36bf1c84.jpg Photo by DARRENB1977 | Photobucket

SANY1176_zps39447693.jpg Photo by DARRENB1977 | Photobucket

Hard to see, but nosecone was added and filler is cracking off.

SANY1177_zps049fd1ed.jpg Photo by DARRENB1977 | Photobucket

BIG RED 89 STINGRAY · Mar 13, 2013

Re: Bravo one gear ratio??

Thanx Bond-o. Originally titled with a 496. Currently it has a blown (as in blown up!) 454. I have a 350 Mag freshly built on a stand I was contiplating puting in...

BIG RED 89 STINGRAY · Mar 13, 2013

Re: Bravo one gear ratio??

Just a side note. There is the raw water pump mounted to the motor, with hose going through the gimble housing as well...

Don S · Mar 13, 2013

Re: Bravo one gear ratio??

Did you recheck the serial number of the drive? YOu still don't know what the ratio is.

BIG RED 89 STINGRAY · Mar 13, 2013

Re: Bravo one gear ratio??

Hey Don.
I did double check the #. It is correct. Hard to see here because I had to compress pic to fit(still working out how to post pics...lol) Still not sure of the ratio? I'm debating on removing the sticker and paint to see if is near the serial #.. Looking to repaint anyways.

Don S · Mar 13, 2013

Re: Bravo one gear ratio??

I looked at your picture, and can't read it at all.

Go here and type in your serial number https://webapps.brunswick.com/literature/literatureSearch.do

BIG RED 89 STINGRAY · Mar 13, 2013

Re: Bravo one gear ratio??

Don, Thanks for the link. Yeah you really can't see it after I resized it..There is a small correction. With a little scotchBrite action it is 0B756883 The Mercury Parts catalog is still calling it an Alpha?? The # on the gimble housing is 0B766755... By looking at the bell housing and inner transom plate.. it looks like a Bravo to me???

Don S · Mar 13, 2013

Re: Bravo one gear ratio??

0B766755 is also a Alpha. and so is the 0B756883 drive number.

Have no idea how Merc screwed up all the numbers, but they sure did. I can look at the drive and the transom shield and tell that it's a Bravo, even without the decals.
88 was also the very first year for the Bravo drives. That might have something to do with the numbers.

Look on the ujoint shaft and see if you have a letter stamped on it anyplace.

Don S · Mar 13, 2013

Re: Bravo one gear ratio??

.

TilliamWe · Mar 14, 2013

Re: Bravo one gear ratio??

BIG RED 89 STINGRAY said:
Thanx Bond-o. Originally titled with a 496. Currently it has a blown (as in blown up!) 454. I have a 350 Mag freshly built on a stand I was contiplating puting in...

It didn't come from Mercruiser in 1988 with a 496. the 496 wasn't introduced until 2001.

And while the numbers are a mystery, that's a Bravo drive. With a nosecone added.

Bravo one gear ratio??

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