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    cleaning the heads on V4

    Re: cleaning the heads on V4 I'd say you have reason for concern. The water passages seem to hold a lot of crud. I note that the last picture depicts a potential problem. The center rubber water diverter is correctly placed, but it is accumlating (deposits) right next to it. That deposit may be...
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    1987 Evinrude V6 175hp block remove problem please help

    Re: 1987 Evinrude V6 175hp block remove problem please help The engine can't be newer than 88, with the dual power packs. The cowling badging indicates it may be from and 85, with the single "175" applique on the back of the cover. Starting in 1986 and later, there were two appliques on the...
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    Need help identifying motor

    Re: Need help identifying motor On some of the older crossflows, the model and serial is stamped on the casting plug on top of the engine as was previously mentioned. here is what you are looking for. It is probably painted over, but it's there.
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    Melted Pistons - 1981 115 HP Johnson

    Re: Melted Pistons - 1981 115 HP Johnson I looks like the rubber water diverters are correctly place, from what I can see in your pictures. That's good-and usually the first place to look in this situation. Since those probably did not contribute to an overheating problem, look elsewhere. But...
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    Rebuild myself, have rebuilt, or repower?

    Re: Rebuild myself, have rebuilt, or repower? The reason the engine failed was due to an overheat due to an internal blockage in the powerhead. The third picture down shows a complete blockage in the water circulating system between the two cylinders. I'll attach a picture of what the rubber...
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    Rebuild myself, have rebuilt, or repower?

    Re: Rebuild myself, have rebuilt, or repower? The reason the engine failed was due to an overheat due to an internal blockage in the powerhead. The third picture down shows a complete blockage in the water circulating system between the two cylinders. I'll attach a picture of what the rubber...
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    1980 Evinrude 100HP - Low compression on 2 cylinders. Need help

    Re: 1980 Evinrude 100HP - Low compression on 2 cylinders. Need help The engine was severely overheated on that side-causing the top rings to break and get chewed up in the cylinders. The rubber water diverter on pic #1 is deformed, completely cutting off water flow around the cyls. The bottom...
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    115 Crossflow Bubbleback Port Damage- Need Input

    Re: 115 Crossflow Bubbleback Port Damage- Need Input Yes, that's correct. The bottom of the port is not the issue. On the intake side the bottom of the port is not exposed, due to the piston. The top is important. I would not raise the port higher than the middle (center of the port.) You can...
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    86 evinrude 150 alarm

    Re: 86 evinrude 150 alarm A picture of a properly-placed water deflector.
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    87 Johnson 88 HP Overheating Problem

    Re: 87 Johnson 88 HP Overheating Problem Your deflectors (seem to look ok) should go back in the block strategically. See pic for normal installation.
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    85 horse evenrude boat motor

    Re: 85 horse evenrude boat motor A model number for the 85 would be most helpful. Most OMC/Bombardier outboards have a model number on the serial tag-located on the transom bracket or the swivel bracket. That area is below the powerhead, around the clamp bracket which holds the engine to the...
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    will bubble back exhaust fit on 76 115 v4

    Re: will bubble back exhaust fit on 76 115 v4 This is a picture of a typical 135 era exhaust cavity the way it came from the factory. You'd need to install the exhaust filler blocks, then deck (machine) the back of the block so it is all flat.
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    J115TLET Timing Question

    Re: J115TLET Timing Question Regarding the WOT timing adjustment: I've attached picture of a typical "rubber stop" on an older crossflow. Found on crossflow engines up through about 1985. Yours is a 93, and uses a slightly different factory WOT adjustment. The procedure you are following is a...
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    Johnson V4 88 Special - Hard Starting when warm - Fouling plugs - Low idle - Pics

    Re: Johnson V4 88 Special - Hard Starting when warm - Fouling plugs - Low idle - Pics A saltwater engine? You've got a lot of crud built up inside the head covers. Best to clean the heads out before you put the covers back on. Also, I'd clean the passages around each cyl and install new water...
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    Johnson V4 88 Special - Hard Starting when warm - Fouling plugs - Low idle - Pics

    Re: Johnson V4 88 Special - Hard Starting when warm - Fouling plugs - Low idle - Pics A saltwater engine? You've got a lot of crud built up inside the head covers. Best to clean the heads out before you put the covers back on. Also, I'd clean the passages around each cyl and install new water...
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    Somebody please help. 1978 Evinrude 115

    Re: Somebody please help. 1978 Evinrude 115 You may not have repaired the original reason for the first powerhead failure. When doing a rebuild, some things to look for: 1. The water deflectors in the powerhead should be examined for condition and alignment. They can get out of position and can...
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    can you tell if its 115 or 90hp johnson?

    Re: can you tell if its 115 or 90hp johnson? Your pictures don't show the important aspect of the block-the rear. Easy to tell if it is a 110/115-they have the bubble back exhaust. I can't see that aspect from your pictures, but that curved appendage is not evident on that block from the...
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    73 Johnson 135hp spark trouble

    Re: 73 Johnson 135hp spark trouble You've got an overheated piston. Causes can be that the block is actually overheated, or that the fuel mixture was too lean and it was not enough to cool the piston during the combustion process. Always possible you have too much timing advance. There are a...
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    1993 90hp johnson sometimes doesn't want to take throttle

    Re: 1993 90hp johnson sometimes doesn't want to take throttle You've overheated the top ring. It broke, got blown into the combustion chamber where it was repeatedly crushed between the piston crown and the head face. Overheated rings can be caused by a number of issues, including: coked rings...
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    What year johnson v-4 could i have?

    Re: What year johnson v-4 could i have? The factory parts catalog website may help you. It shows all models back to 1968. It's easy to compare parts. It's on the web at: epc.brp.com. If you have the information from the core plug on the top of the block, the model number will match up with the...
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