Finding a new lower unit questions.

[v12mac]

My motor SSN j225txcdag7163689 1986 225hp Just ate up the lower unit. Could anyone out there help me learn how to ID a suitable replacement? Shaft length etc? I have been told that the lower unit from a V6 cross flow will not work on a looper, how can I id the differences and figure out what will work for me?<br /><br />Mac

 

[Dhadley]

Re: Finding a new lower unit questions.

Any V6 lower unit from 1979 on will work. Your motor seems to be a 25" model so thats what you need. Just use your shift rod and adjust it for your 1986 motor.<br /><br />You can also use a V4 from 1979 on and any V8 but the gear ratios are -- obviously -- different.

 

[v12mac]

Re: Finding a new lower unit questions.

Thanks for the reply, How can I tell if it came off a v4 6 or 8 in the bone yard? What should the ratio be for this? Turns of the engine shaft vs prop shaft? Am I understanding correctly, I can use the Shaft from any of those but I need to use my existing shift rod?<br /><br />I have been told that the cross flow v6 has a different ratio from the looper v6 is this true?<br /><br />Is there an easy way to check the unit? I don't have any way to pressure check one. I think figure I'll drain a bit of fluid out and feel it for grit any other ideas?<br /><br /><br />Mac

 

[Dhadley]

Re: Finding a new lower unit questions.

Your best bet is to call Jack or Gordon over at Superior Marine and just tell them what you need. A 25" V6 gearcase for a 1986 V6 looper. 800-338-9281, 239-267-6722. They're in Ft Myers.

 

[v12mac]

Re: Finding a new lower unit questions.

Thanks I will call him in the AM. I am a bit out of my comfort zone with swapping parts that look the same but do different things! I was getting some e-bay fever this morning and had to talk myself down. <br /><br />If I tell him you send me will he give me a better or worse price <br /><br />Mac

 

[JB]

Re: Finding a new lower unit questions.

Your BEST bet is here: http://www.boatmotors.com/motorparts/ <br /><br />Good luck.

 

[v12mac]

Re: Finding a new lower unit questions.

WOW, Sticker shock! I figure this motor running is only worth $500. I have some serious thinking to do here.....<br /><br /><br />Mac

 

[Dhadley]

Re: Finding a new lower unit questions.

What about redoing yours? How bad is it? Generally if the case, shafts and carrier are OK its worth rebuilding yours.

 

[v12mac]

Re: Finding a new lower unit questions.

I haven't broken it down, but I assume the worst case. There was literally no oil in the case when I drained it. Only black water and metal shavings.<br /><br />In your post <br /><br />

Originally posted by Dhadley:<br /> Any V6 lower unit from 1979 on will work. Your motor seems to be a 25" model so thats what you need. Just use your shift rod and adjust it for your 1986 motor.<br />

I think this will be the route I go. I found a cross flow unit locally that could be a good candidate for the shift rod swap. <br /><br />Mac

 

[v12mac]

Re: Finding a new lower unit questions.

All right I bought a Lower Unit 25” shaft from a cross flow motor. My plan is to swap the shift rod, water pump + new impeller, change LU fluid run 30 min and change the fluid again to look for any contaminants. Am I missing anything?<br /><br />Mac