850 Merc

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
13,089
A I-6 wont work as ratio..need a 4 cylinder unit from a: 650/75/80/85/800/850

It will fit, and it will work, but the Prop will need to be a lower Pitch being a 2:1 ratio vs. 2.3:1 for the original case
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,664
It will be slow out of hole and water sports out of question unless propped really low. Be there,done that and don't work worth a dang.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
36,656
Derekc294----Are you now trying to repair your own lower unit ?------If so are you familiar with shimming the replacement gears ?
 

Derekc294

Petty Officer 2nd Class
Joined
Oct 1, 2013
Messages
152
I’m looking for someone locally to swap everything to the lower unit case. I don’t want to take the chance buying something used since everything seems way overpriced. A lot of the ones I’m seeing on EBay look like they wouldn’t be just install and go they look like scrap. Unless I’m not looking at the right parts or searching with the right words.
 

Derekc294

Petty Officer 2nd Class
Joined
Oct 1, 2013
Messages
152
The bare lower I bought was sandblasted and is the correct one so now it’s a matter of just swapping the internals
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,664
Have several... Use PMs please .
 

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Derekc294

Petty Officer 2nd Class
Joined
Oct 1, 2013
Messages
152
Faztbullet I think I sent you a PM. I’m pretty terrible at navigating the site.
thanks again everyone
 

Derekc294

Petty Officer 2nd Class
Joined
Oct 1, 2013
Messages
152
Should I use the same type of prop or switch it up? Prop says D170 on the side. What would I switch to for more top end?
 

Derekc294

Petty Officer 2nd Class
Joined
Oct 1, 2013
Messages
152
Well, I found a guy in Kenosha Wisconsin who can swap it all over for me. No luck finding a used lower. I have to wait until Saturday to drop it. Said it would take a few days... I’ll post back, wish me luck
 

Derekc294

Petty Officer 2nd Class
Joined
Oct 1, 2013
Messages
152
Thank you GA. I was looking on the site and couldn’t find lower units for sale. I know it’s older but wasn’t sure if they were being sold.
 

Derekc294

Petty Officer 2nd Class
Joined
Oct 1, 2013
Messages
152
Faztbullet have you had any luck with checking your stock? I’m trying to avoid this long drive this weekend if I can, if you could let me know one way or the other I’d appreciate the help.
 

GA_Boater

Honorary Moderator Emeritus
Joined
May 24, 2011
Messages
49,038
Faztbullet have you had any luck with checking your stock? I’m trying to avoid this long drive this weekend if I can, if you could let me know one way or the other I’d appreciate the help.

Use PMs.......
 

Derekc294

Petty Officer 2nd Class
Joined
Oct 1, 2013
Messages
152
Does anyone have the information on how to shim the lower to put it back together?
 
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