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05-27-2014, 05:21 PM
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#1
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Lt. JG
Join Date: May 2014
Posts: 16
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120 L-Drive Impeller housing question
1990 Force L-drive 120 motor. Is over heating at high rpms. Going to start with impeller and saw that the plastic housing is cracked. Question is....the rebuild kits I find have a white plastic pc included that fits in the hole in the housing beside the drive shaft. When I pulled my lower unit it did not have that pc there. WHAT IS IT AND DO I NEED IT IT!?!? The rebuild kit is for a 85hp-125hp85hp-125hp motor.
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05-27-2014, 05:27 PM
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#2
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,606
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pictures or diagram?
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1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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05-27-2014, 07:21 PM
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#3
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Lt. JG
Join Date: May 2014
Posts: 16
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Hey there Mike. I don't think I can post pix yet but I will try and put one in my "albums" folder.
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05-27-2014, 07:29 PM
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#4
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Lt. JG
Join Date: May 2014
Posts: 16
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The white cylinder pc 
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05-27-2014, 07:31 PM
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#5
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Lt. JG
Join Date: May 2014
Posts: 16
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This is my current cracked housing 
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05-28-2014, 01:13 AM
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#6
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,606
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The crack is tight so doubt much water pressure would be lost.
The white sleeve connects the pump output to the water tube in the upper half. Look to see if the old one stayed on the upper tube.
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1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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05-28-2014, 03:43 AM
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#7
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Lt. JG
Join Date: May 2014
Posts: 16
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Ok. Well I hope between the housing and the impeller it will fix my problem. Is there any sealant or anything I should use when reinstalling the gaskets and the plate?
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05-28-2014, 12:35 PM
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#8
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,606
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I use mercruiser perfect seal on the gaskets.
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1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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06-16-2014, 10:38 PM
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#9
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Lt. JG
Join Date: May 2014
Posts: 16
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Ok Mike. I have everything put back together and my propeller is running while I'm in neutral.....
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06-17-2014, 02:38 AM
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#10
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,606
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I know with Alpha drives the lower must be installed while in forward gear and Bravos are done in neutral.
How did you install yours?
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1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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06-17-2014, 02:47 AM
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#11
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Lt. JG
Join Date: May 2014
Posts: 16
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Well....I took it apart while in neutral but during more research found that a lot of them have to be in drive like you said. So I put it in drive for the install. Do I need to take it apart in drive and put it back together in neutral?
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06-17-2014, 03:39 AM
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#12
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,606
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Not 100 percent sure but from what I know outboards are assembled in neutral so to answer your question yes.
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1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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06-17-2014, 10:20 AM
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#13
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Lt. JG
Join Date: May 2014
Posts: 16
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I will try....and we shall see....
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06-20-2014, 12:42 PM
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#14
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Lt. JG
Join Date: May 2014
Posts: 16
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Ok....put the boat in drive, disassembled LU, put in neutral and reassembled. Worked!!! Took it on the river last night and ran it for about 30 mins up and down at full throttle.....no overheating! Only issue I found is there seems to be a "sweet" spot witht the throttle. I push it all he way down and it runs about 4500 rpms. I move it up and down and its like it catches and picks up to 5000. Issue with the throttle cable maybe?
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06-20-2014, 01:23 PM
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#15
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,606
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First glad to hear you got the shifting and heating fixed.
I don't know enough about this engine but I would suspect either cable/linkage issue or possibly dirty carbs. Does this engine have oil injection or do you mix the oil in the gas?
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1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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06-20-2014, 03:28 PM
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#16
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Lt. JG
Join Date: May 2014
Posts: 16
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Its 2 stroke...mix 50:1.
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06-21-2014, 02:25 AM
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#17
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,606
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Yep I know it is a two stroke just was not cure if it had oil injection or old style mix in the gas.
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1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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06-21-2014, 03:03 AM
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#18
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Lt. JG
Join Date: May 2014
Posts: 16
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Oh, sorry. Well thanks for all of your help.
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