Stern drive serial #

[flipbro]

Hi Guys not sure if this is were i should post this! I bought a drive tonite couldnt help my self for the price. Guy told me its a alpha 1 came of a 23 foot scorpion with a 5.7 merc and gear ratio is 1.50. the only # i can find is OB318134 is this a alpha ss? and if so what is the differance from the alpha 1?

 

[thumpar]

Re: Stern drive serial #

That serial comes up as a Mercury 25HP.

 

[flipbro]

Re: Stern drive serial #

I a sure you this is not a 25 horse merc unit lol. That is the serial num from the upper unit weird anyone got any ideas?

 

[thumpar]

Re: Stern drive serial #

Double check the digits. Sometime 3's and 8's can look really close. Double check the letter too.

 

[flipbro]

Re: Stern drive serial #

Sorry guys the serial number is ob818134. So is this an alpha 1 gen 2

 

[flipbro]

Re: Stern drive serial #

Ok I answered my own question it's a r mr alpha one number thanks thumper

 

[thumpar]

Re: Stern drive serial #

If this is the serial, OB818134, it is a 1.65 ratio.

 

[flipbro]

Re: Stern drive serial #

O. Ok would this drive be ok to hook to a 5.7 merc 84 era in a 20 foot wellcraft

 

[thumpar]

Re: Stern drive serial #

The ratio might be a little high unless that is a really heavy boat.

 

[flipbro]

Re: Stern drive serial #

No boat is not real heavy 20 foot wellcraft elite bow rider no sure of overall weight. Hmm we'll the price was rite and can make a couple bucks on resale if cant b used

 

[tazrig]

Re: Stern drive serial #

Well, good luck either way just don't blow it up by over revving it.

 

[flipbro]

Re: Stern drive serial #

Were are you guys looking up the serial number to get the gear ratio?

 

[thumpar]

Re: Stern drive serial #

https://webapps.brunswick.com/literature/literatureSearch.do

 

[flipbro]

Re: Stern drive serial #

Thanks again. I noticed a remanufacured sticker on the drive so I pulled the top plate and counted gear teeth 22 20 so I'm asumming they just used the case and rebuilt with different gears so good news thank again