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  1. Texasmark

    1996 Mercury 115 steering cable stuck

    The Top of the crankshaft, above the flywheel nut, is threaded. An eye loop installed there will give you the best way to lift the engine. I have used a roll around engine hoist...like you would use to pull an engine out of a car which has worked well for this task.
  2. Texasmark

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    I use that Aviation sealer also on occasion where I feel it is needed. Locktite blue is for fasteners that one expects to remove from time to time. Red is for permanent applications and if removal is required, it is said that heat is a necessary aid. Locktite seals on compression so you have...
  3. Texasmark

    Clunking and prop slipping

    If it wasn't for some clunking noises I wouldn't expect any gear problems. Sitting in the water you MIGHT be able to unscrew the drain screw and with a paper towel sample some gear oil. If you see metal or if it has a milky look to the oil, then look for problems. If not, pull the prop and...
  4. Texasmark

    1982/83 70HP 3 cyl fuel pump WATER line I.D. size?

    Great Idea!
  5. Texasmark

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    Rule of thumb on here is 1" change pitch equates to 150-200 RPM change. Running the same engines and same props with the same trim setting smells of engine trouble. Possibly having had the trouble, if you run it for awhile maybe the internals of the bad engine will clean up and the RPMs will...
  6. Texasmark

    1982/83 70HP 3 cyl fuel pump WATER line I.D. size?

    My 115 has internal diameters of 5/16" but 3/8" supply line. I think the 3/8" supply line just cuts down on merchants having to stock numerous sized lines for different HP engines.
  7. Texasmark

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    Great prices and nice find on the props. Now how about some performance specks like what are your 2 full throttle RPM numbers?
  8. Texasmark

    need to determine what prop I need

    Get he prop ID either with a part number or diameter and pitch with somebody's LOGO molded or stamped in the side of the barrel for that and/or one end of the prop hub , either the rear or front of the prop near the prop shaft area. If that doesn't work take it to a prop shop and maybe there is...
  9. Texasmark

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    I totally agree but he doesn't have another prop to match the other engine and I doubt he has access to a dyno. He has to start someplace and after all the stones he has rolled over already, I doubt there is much he missed if anything as far as what, if anything, is wrong with the engine now...
  10. Texasmark

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    I have numerous Turning Point Hustler, 13+ diameter, 4" hubs, purchased here, that were 3 and 4 blade aluminum props. Never had a problem. Engines were 90 and 115 Mercs. I didn't specify nor pay any attention to any remarks about the hub diameter. I just relied on the fact that the 13" dia...
  11. Texasmark

    Am I under proped?

    For this to work, you have to have the same prop with 2" less pitch. Change prop types, suppliers and all bets are off.
  12. Texasmark

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    So one would ask why did the plate separating the cylinder's exhaust gasses from the cooling water warp in the first place? My answer would be that it didn't receive the cooling water of the engines original design. My understanding of cooling loops is that they are 2 separate circuits whereby...
  13. Texasmark

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    Since you said that water was definitely getting into the exhaust chamber then I would think as each piston went up and down it could introduce water into that cylinder. The water comes in under force from the water pump so I can rationalize this. On the one piston being wet and the others...
  14. Texasmark

    Oil injection delete

    Well sir that "used to be" the way they worked.....today, after the EPA stuck their nose in the subject its no longer the case. I have been boating since it was about 17, back in the '50's. Have boated all my life. I am not a non educate newbie in the subject.
  15. Texasmark

    Constant ringing noise from throttle when motor is running.

    On my 4 cylinder Mercs, the sensor is embedded in the rear cover plate (water jacket) on the rear of the block.....the plate that the spark plugs protrude through, held in place with one small screw. Wire is tan.
  16. Texasmark

    Oil injection delete

    No I don't. I cut open one of them and besides the outer shell being resistive, I found a rubber cylinder inside....doing nothing, just taking up space and offering resistance to what I said.
  17. Texasmark

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    A "washed clean" plug (and you are showing 4) can signal water in the combustion chamber....a likely cause.....source, the cooling water that is circulated over the exhaust cover may be getting into your combustion chambers via a defect of some sort with the cover plate between the two...
  18. Texasmark

    Oil injection delete

    I boat infrequently. As a result my first start is problematic, on 2 engines, one of which is driving the boat in my Avatar, kissing 50 with a 90 HP engine on a 17+' aluminum bass boat........so obviously there isn't anything wrong with the engine. With today's squeeze bulbs, unlike the old...
  19. Texasmark

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    First thing is to get loaded up and go out and firewall the throttles and trim to best performance. What is the RPM of both engines under these conditions? Best performance is near the top end of the recommended operational RPM range.....would be somewhere around 5500 to 6000 RPM. If you are...
  20. Texasmark

    Constant ringing noise from throttle when motor is running.

    On larger engines the noise is a warning that either your internal oil system isn't working or your engine is over heating. On some engines the low oil is a pulsating signal whereby the over temp is a solid horn......if they have the pulsation module. If you are on muffs and only have this...
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