Alpha One SS ??????

[2000xl Mariah]

I put a new water pump in my 1990 Mariah with a 5.7L Alpha One. I purchased the required parts and went to install them and found out the bottom pump housing would not fit. I when back to the marina with the old part and found out that I have an Alpha One SS, can anyone tell me what the diffrence between an Alpha One SS and Alpha One is?

Thanks

 

[Bt Doctur]

Re: Alpha One SS ??????

Alpha, R,MR, Alpha SS all use the same one, you may have been given a kit for a Series1,only the base is different.
manual link below
http://www.boatfix.com/merc/Servmanl/6/6covr3.pdf

 

[2000xl Mariah]

Re: Alpha One SS ??????

I ended up with the correct part. I was just wondering what an Alpha One SS was? Is it a special unit, what makes it diffrent from a standard Alpha One? I have searched, but can not find any information on them other than they were made from 1986 - 1989.

 

[180shabah]

Re: Alpha One SS ??????

Gear ratio was 1.32:1, they were used behind big blocks and didn't hold up very well unless pampered. Bravos were introduced to handle the higher power engines in '89.

 

[2000xl Mariah]

Re: Alpha One SS ??????

Mine is stamped with a 1:1.5 gear ratio and is attahced to a small block 5.7L (orginal to the boat). Are there any specific chariteristics that I can look at the would tell me that I have an SS or a Standard Alpha One?

If I have a SS, I am worried if anythign ever happens due to the limited number of years they were produced. Were they prone to any failures?

Sorry for all the questions

 

[Bondo]

Re: Alpha One SS ??????

Ayuh,... The SS lower case is much more tapered with a long nose,+ lower water pickups...