iboats - The #1 Store For Everything Boating
 
  #1  
Old March 3rd, 2008, 03:06 PM
mjchog mjchog is offline
Cadet
 
Join Date: Mar 2008
Posts: 1
Default 1970'ish Mercury 800 lower unit crack

Yesterday I had great plans to get the boat in the water.
I noticed the leaves under my motor were oily looking. I inspected the lower unit and found a crack that ran from the back of the housing near the prop forward about 3-4 inches. There is a slow oil leak from it. I am new to boat motors. I have read that if water is not in the oil, which it should not be because it has not been in the water since it cracked, that i could have the crack welded. Is this correct?
Reply With Quote
  #2  
Old March 3rd, 2008, 03:37 PM
Laddies Laddies is offline
Supreme Mariner
 
Join Date: Sep 2004
Location: northern michigan
Posts: 10,635
Default Re: 1970'ish Mercury 800 lower unit crack

Most weld jobs on the lower unit burret distort themwhere they will never seal, so goiod luck. If the engine had been winterize properly you would not be in this fix.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
lower unit crack ben_fishn Mercury & Mariner Outboards 4 July 14th, 2007 01:15 AM
crack in lower unit help PIC defcondaze Johnson & Evinrude Outboards 16 September 14th, 2005 08:04 PM
Lower unit crack - any tip to fix it? wtrojan Yamaha & Suzuki Outboards 5 May 26th, 2004 07:23 AM
Lower unit crack - any tip to fix it? wtrojan Non-Repair Outboard Discussions 0 May 20th, 2004 04:32 PM
Lower unit crack DRANGEL46 Non-Repair Outboard Discussions 0 June 20th, 2001 08:37 AM

iboats Forum Directory
Over 100,000 forum posts organized by topic
Outboard Motor Topics
Mercury Outboards
Johnson Outboards
Evinrude Outboards
Force Outboards
Yamaha Outboards
Mariner Outboards
Suzuki Outboards
Honda Outboards
Chrysler Outboards
Tohatsu Outboards
Nissan Outboards
Outboard Motors: non-repair
Vintage Outboards

I/O and Inboard Topics
MerCruiser
OMC I/O, Inboard
Volvo Penta

Propeller Help
Boat Propellers

Boat Repair and Products
Boat Building and Repair
Fiberglass Boat Repair
Marine Electronics
Boat Trailers and Towing
Boat Names
Boat Covers
Boat Parts

Boating Activities Talk
Boating Topics and Questions
Boating Activities and Destinations
Boating Blunders
Boat Shows
Wakeboarding
Water Skiing

Fishing Discussions
Freshwater Fishing
Saltwater Fishing

Boat Type Topics
Aluminum Boats
Bass Boats
Bowrider Boats
Center Console Boats
Cruiser Boats
Cuddy Cabin Boats
Deckboats
Fishing Boats
Fish and Ski Boats
Houseboats
Jet Boats
Jon Boats
Pontoon Boats
Powerboats
PWC Forum
Ski Boats
New Boats
Used Boats

Boat Manufacturers
Boats 250+ Manufacturers
Bayliner Boats
Sea Ray Boats
Zodiac Boats



Outboards

Power Heads

Lower Units

Propellers

Inflatable Boats

Boat Manuals

Engine Parts

All times are GMT -4. The time now is 04:22 PM.