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    1980 115 johnson midsection noise??

    Re: 1980 115 johnson midsection noise?? I did not see the most usual crossflow failure: that of cracked rings and pitted piston crowns. Looks like the rotating assembly is still intact. The piston slop in the video is very normal on a crossflow. Once the pistons heat up in the cylinders, the...
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    Not getting water to heads on muffs on 1985 johnson 115

    Re: Not getting water to heads on muffs on 1985 johnson 115 The telltale is plumbed into the block where the water from the lower unit goes first. It is a good indication that the impeller is working ok. Not that the water is circulating through the block. The block water exits at the...
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    durban removes defletor tubes in 90hp 1984

    Re: durban removes defletor tubes in 90hp 1984 This picture is what a typical water diverter/deflector should look like when properly installed in a block. Bombardier sells them precut to the exact length.
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    Confused on Evinrude 140

    Re: Confused on Evinrude 140 The 85 (or 90) hp crossflow OMC's were always 4 cyl. engines. Torquey little things that love lots of gas. Your compression is solid according to your readings. Any boating official will usually disregard the cowling markings and will go right for the model/serial...
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    Mystery 1983 115 Evinrude 115HP or 130HP Johnson / Evinrude

    Re: Mystery 1983 115 Evinrude 115HP or 130HP Johnson / Evinrude Some good eyes on this forum. That power pack is from a 1972 model. As mentioned, that engine should have a casting plug on the top of the engine which will have the serial/model information for the block. See attached pic for this...
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    1979 175. Can it be detuned to a 150?

    Re: 1979 175. Can it be detuned to a 150? The crankcase assemblies are the same part number and the rotating assemblies are the same. Only difference is the size of the carbs. You can use your 150 carbs and it'll make 150 hp. Only problem will be when someone checks the engine I.D. which is...
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    Need help identifying proper jets

    Re: Need help identifying proper jets The jets can vary in this V4 engine depending on year/model. It would be extremely helpful if you could post the model number of the engine. It is found on the serial plate tag on the transom mount, or on the round casting plug on the top cylinder. (could...
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    Service and Maintenance on '77 Johnson 85hp

    Re: Service and Maintenance on '77 Johnson 85hp The rubber water deflectors appear to be installed incorrectly and may block cooling water flow through the block. Those are the 4 small hoses inserted into the block: Your center picture shows both deflectors. I'd replace all 4 to insure they are...
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    91' 88 SPL no water from tell tale high rpm

    Re: 91' 88 SPL no water from tell tale high rpm Most any marine dealerships sell inexpensive water pressure gauges. You will need one which reads 0-30 lbs. You can close off the top two (one on each side) water intake holes. There is sufficient water coming through the bottom 3 to safely run...
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    1983 140 omc fuel pouring out of orifice in carb

    Re: 1983 140 omc fuel pouring out of orifice in carb Looks like you have stock heads. The 320504/505 are the stock low compression heads used on the 90/115 in 1983. The high compression 140 heads were part numbers 320502/503. I don't think the 2bbx number goes anywhere. I'll post a similar...
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    Johnson 235 block with 175 carbs

    Re: Johnson 235 block with 175 carbs Yes, there are differences in the carbs-the later carbs have a mid range jet. On your 78 235 carbs, they have a unique high speed pullover jet, which the 88 does not have. So there are differences between them. I'd concentrate on getting the issue with the...
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    135 Johnson outboad ??????

    Re: 135 Johnson outboad ?????? The serial number and model number are stamped in two places on that engine: the id tag riveted to the transom bracket and the round casting plug on the top of the block. Both of them should be stamped identically. If they are different, something has been...
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    1978 Evinrude 150

    Re: 1978 Evinrude 150 The attached picture is not of a 79 head, but the pictured configuration is more like the original heads that the factory put on a 1978/79 V6. These are a higher compression head than a later bathtub head and will tend to match up better with original 1979 carbs and...
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    need help identifying a model of a bubble back

    Re: need help identifying a model of a bubble back You can look for a casting plug on the top of the engine. Here is a typical plug, about the size of a quarter. On many of the early crossflows, it will have the same information that is stamped on the serial ID tag on the transom brackert...
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    1977 Evinrude 140

    Re: 1975 Evinrude 140 Re: 1975 Evinrude 140 pcrussell is correct this engine is not what you think it is. The coil bracket is on the top of the block, indicating a 1977 or older ignition system. The power trim system is from a 1977 or later. The cowling has decals for the label "Evinrude...
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    Overheating 1995 88 SPL

    Re: Overheating 1995 88 SPL The rubber water diverters direct water flow around the cylinders in the block. Not only can these diverters get out of place, but they can accumulate debris by them, restricting the water flow through the block. Here is a picture where the right water diverter has...
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    ? 1977 Evinrude 115Hp.

    Re: ? 1977 Evinrude 115Hp. Many of the cowlings are interchangeable for a number of years, so it's not unusual to see the wrong cowling. Usually, someone puts a higher hp cowling on a lower hp engine when it's up for sale. You can confirm the actual hp and year of the block by the model number...
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    difference between v4 Evinrudes.

    Re: difference between v4 Evinrudes. Some of the bathtub heads started appearing in 81, but by 83 they were pretty much all low compression heads. The first head is a 135 head and is typical of a high compression head. I've attached a picture of a (damaged) low compression head. They pretty...
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    water pumping out wrong place

    Re: water pumping out wrong place The reason I am asking so many questions is that you may have some mismatched parts on that engine. The serial number you provided in the post prior 200840r is for a 1978 200 hp Evinrude. That just does not add up. If serial tag is attached to the transom...
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    V4 crank case btm half modifcation

    Re: V4 crank case btm half modifcation You may be thinking of the pictured modification to the block and pistons skirts.
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