Search results

  1. E

    1987 evinrude 90 hp

    When you pull the head off the low compression side of the block, check to see if the top ring is cracked. If it is, you will see what appears to be small dents in the crown of the piston and the face of the head. A sure sign the ring let go. You'll be needing an overhaul and new ringsets and at...
  2. E

    1989 90 Hp Johnson Block Question Pic Attached

    130 lbs is strong compression for an engine with the low-compression "bathtub" heads.
  3. E

    1991 Evinrude 88 spl overheating deflector replacement

    The left hand deflector in the picture is considered "normal". The right one is an example of one misplaced.
  4. E

    Help purchased a used Johnson 235 outboard and VRO missing !

    The early 235 blocks were small bore, 149 cubic inch blocks. Those early heads were great, but won't fit on big bore blocks. In 1980, OMC made all the 235's as a 160 cubic inch block. When they first came out, they had best high compression heads-the 325638 and 639 heads. Found in the 1980 and...
  5. E

    Water in number 3 cylinder, v4 140 1980

    Not likely that water can get ingested into the powerhead from reed valves. Here is a typical pictured of a bubble back. (Actually a 135, but with the 140 rib cutout at the bottom.) If you put a straightedge anywhere across the face of the exhaust chest, it will all be perfectly flat. That's...
  6. E

    1993 Johnson TJ115TLETS burned Piston

    Agree. It's a little hard to see, but looks like the pictured water diverter may have severely restricted water flow around the cyls on that side of the block. Any excess heat can cause a lean condition in the cyl-causing the the top ring will disintegrate. Even if you have the correct fuel...
  7. E

    Lower unit intake clogged

    I run my engines somewhat high on the transom to minimize lower unit drag. It's acceptable to fill the top hole on each side of a V4/V6 lower unit and not suffer from lack of water. I fill the top hole on each side. You can fill to the top two, but then need to remove the rib between the bottom...
  8. E

    1973 Johnson 135 hp outboard overheating

    Just because you replace the impeller does not mean it won't overheat. If the thermostat (vernatherm on that engine) is stuck shut, it won't let the cooling water circulate thru the block and it will overheat. Here is the way to check for normal stat operation: Start the engine cold while...
  9. E

    Help please. ATTEMPTING to get more speed out of Skeeter SS140

    Make sure your setup is optimized first. Be sure the engine is mounted correctly. If it's too low, you'll get poor performance and fuel economy and lower speed. Once you are sure it's mounted high enough, then get the right prop to match the rpm's that TD stated. In order to make sure you can...
  10. E

    1981 Johnson 200 HP: Any opinions?

    I ran an identical 79 200 for years. If he blew up the powerhead, what exact powerhead did he put back on it? Makes a big difference. Not many of these 200's around. (a real 200 or just a 150/175 block?) That 200 is an unusual duck. It's the same cubes as the 150/175, but the block is ported the...
  11. E

    Johnson 150cc Two stroke... Problems in the water.

    This is a Johnson/Evinrude V4 crossflow engine. Probably at least an 86 or newer. That model would have been a 110 or 115 hp with the bubble back exhaust. It's 99.6 cubic inches. A very popular model back when these were produced. Last year for this model was around 1997. A torquey engine that...
  12. E

    What crankcase will work

    You can identify your block and perhaps the other block by comparing the factory info from the casting plug on the top of the engine. See the attached picture. This plug shows the exact engine model and original serial number-that would match the serial tag on the transom bracket. Hopefully...
  13. E

    1993 Johnson 115hp VJ115tlets warning alarm

    A salt water engine may show signs of debris accumulation in the water passages around the cylinders. That's not all that abnormal. What you are looking for is that the 4 rubber water diverters are properly in place and that there is no blockage accumulating around them. See pic: it shows a new...
  14. E

    where is my engine model # located...UPDATE

    Look for an aluminum casting plug on the top of the block. Painted over, but may have some useful info, see pic. About the size of a quarter.
  15. E

    Way to HOT

    The cooling system is all one. You are correct: When idling, the lower unit impeller does all the heavy lifting, sucking and pressurizing water up to the powerhead. When your boat is on plane the force of the oncoming water overcomes the pump action forces tons of extra water (and pressure) up...
  16. E

    1985 90hp head gasket pics, diagnose help needed.

    The head gasket looks fine. The seal ring is intact for both cyls. The pistons look normal, somewhat wet, oily-after idling for a while. Cyl walls look excellent. Do not see any real problem, except-the middle rubber water deflector may have the start of a restriction. It may be restricting...
  17. E

    1985 90hp regulator/rect. effects?

    There is a casting plug on the top of the block. I has the same serial/model information that the transom bracket tag has/had. Check it out. Here is a picture of what one looks like. Yours will be painted over, so look carefully. This tag is for a 1975 , electric start, long shaft 135 hp engine.
  18. E

    chewing up piston rings

    I'm concerned about the water flow around the cylinders in your picture. Seems to me that the upper rubber water diverter is a little too close to the sidewall, somewhat restricting water flow. Not closed, but restricted. Also, there looks to be some debris on the right side of the lower cooling...
  19. E

    Johnson VRO 4, 90 HP. overheat problem one side of engine

    The amount of deposits inside the cooling system can contribute significantly to any overheat. See the attached picture of how the cooling passages need to look. The rubber diverter just to the left is positioned correctly. The one to the right is out of position. Note how easily the cooling...
  20. E

    Water Diverters

    Usually a mis-located diverter will result in a hot head, not a cold one. You may have a thermostat stuck open instead. See pic for the diverter. The pictured one to the left is ok, the righmost one is an example of one out of place.
Top