converting pre alpha to alpha

qaztwo

Petty Officer 1st Class
Joined
Jun 26, 2004
Messages
384
Hi people,new guy here with a question. I just accuired a 76 searay srv 200 with a 351 233 merc, got a good deal because there was no stern drive and engine was lock up. Fixed the engine problem,also converted the old 2bbl carb and intake to a 4 bbl if that makes a difference, now need to fix the outdrive problem. Was going to use pre alpha, but a friend suggest I simply use a alpha instead. I talked to someone else about this and they said I might run into some problems with the cooling system, that the alpha stern drive and the gimbal housing are different sizes for the water passage. <br /><br />Any info would be help, thanks.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,468
Re: converting pre alpha to alpha

they said I might run into some problems with the cooling system, that the alpha stern drive and the gimbal housing are different sizes for the water passage.
I've Mixed & Matched a Bunch of Mod.1s,+ Alpha 1s.....<br />Never had That Problem..........<br /><br />Make Sure you use the Right Length Drive Shaft......<br />Not sure which 1 You want.....<br />There's 1 a little over 8",+ 1 a little over 9"........<br />Using an 8" in a 9"appl. will work for a Short Time..... Then the Coupler Strips......<br />Of Course,<br />Using a 9" in an 8"appl. Won't Bolt Up.......<br /><br />Good Luck...<br />And Check out the Alphas here at iboats....
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: converting pre alpha to alpha

Good web page, but no mention of the "MR", the transition from "R" to "Alpha One".
 

qaztwo

Petty Officer 1st Class
Joined
Jun 26, 2004
Messages
384
Re: converting pre alpha to alpha

Thanks for the info guys. And Bondo is there a way to measure out from the end of the coupler to a point, or will I need to look in a manual to find the correct input shaft lenght.<br /><br />Thanks again.
 
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