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  1. M

    Prop compatibility - Merc, Yamaha, Honda

    I'm wondering about the interchangability of these props. If each prop has the same # splines, diameter and pitch can they be used as sustitutes for each other ? Is there a cross reference available anywhere ?
  2. M

    More L/U questions - oil & water

    Last fall when winterizing the motor found water in the L/U. This spring I replace all waterpump components as well as drive shaft seals and new fill & drain screws with washers. Manual states the oil capacity is 12.5 oz but I was only able to get about 10oz into it before it spilled out the...
  3. M

    Ball joint replacement tips or suggestions ?

    Need to replace both upper and lower ball joints on my 96 Safari van. Upper joints look simple but the lower ones are apparently pressed into the lower control arm. Anyone done these themselves who might offer some tips or suggestions ? Don't have the "proper" tools but I am good at improvising.
  4. M

    Trim tabs and cavitation

    Installed a set of home-made trim tabs and they perform better than expected. Was able to get rid of the hydrofoil, reduce planing speeds to about 15-16MPH and eliminate porpoising at high speeds. Now for the problem :( . I think I am getting some cavitation now when trimmed up and running at...
  5. M

    Thoughts on speed

    Second season with boat and motor. 14ft whaler style boat with 40hp mariner magnum. Worked on the motor, changed prop, and added trim tabs to the boat over the winter. Top speed now with two in the boat is 44 mph @ 5500rpm on medium chop water with peaks to 46mph. Last season the best I could do...
  6. M

    First time out this year - thanks everyone

    Well finally got the boat in the water. After all the work over the winter and spring I am happy to report that everything went perfect. Motor started right up (after I remembered the kill switch :rolleyes: ) and ran smooth as a sowing machine. Here's what was done. Replaced water pump and...
  7. M

    Rectifier output ????

    Got the motor running first time this year, 92 Mariner 40HP 4cyl. Added a tach earlier this spring and after firing up the motor the tach was dead. Checked for signal at the tach - none. Checked for signal at the rectifier terminal that tach wire is hooked up to - none. Checked other rectifier...
  8. M

    Powerhead removal - worth the effort ?

    1992 40hp Mariner Magnum 4cyl. Trying to decide if it is worth the time and effort to pull the powerhead so that I can replace the exhaust tube that was missing on this motor. Seems it can only be installed from the top down. The task looks straight forward according to the manuals but I was...
  9. M

    Maintenance free battery maintenance ???

    I have a DEKA Marine Master starting battery that is the maintenance free type. My motor, a 1992 40HP mariner, puts out 15-17V when running flat out. I have been told that this high charge voltage could boil off the water in the battery and that I should check it frequently. From what I can see...
  10. M

    Seafoam in southern Ontario

    While shopping in Newmarket yesterday I noticed that both UAP/NAPA and B&B Dixon automotive are now carying the Seafoam products. Seems to be more popular locally now than it was last summer. Thought it might be of interest to local boaters.
  11. M

    Transom Tie Down - other ideas ?

    I am in the process of adding trim tabs and discovered that I can no longer use the transom rings to secure the boat to the trailer. It is a 14ft boat with a beam of 63". With the trim tabs, transducer and speed sensor mounted on the stern there is no where to run a strap to the trailer without...
  12. M

    40HP exhaust Tube - is it missing ?

    I started an new topic here with more of an appropriate heading. My earlier post (waterpump woes) was not very representative of the issue. As for the exhaust tube, I'm still not sure what to do. If it had one originally I want to put one back in. If it was not designed for one, I don't want to...
  13. M

    Cutting holes for gauges in dash

    Going to install a tach this spring. The mounting hole is 3 3/8" dia. Other than investing in a $46.00 hole saw for a one time use, is there another way to get this done ? I don't have room to use a router with cirlce template. The dash is 1/4" fiberglass with 1/2" balsam wood backing and...
  14. M

    Swivel bracket bearings shot ???

    1992 Mariner 40HP. I noticed some play in the housing where the motor swivels (turns) in the transom bracket. There seems to be about 1/16" play at the bottom between the shaft and bearing/housing. Is this normal or do I need to replace the bearing and seals. There is no mention of this assembly...
  15. M

    Prop shaft end play

    I am able to feel a slight amount of end play on the prop shaft of a 1992 40HP Mariner. I think you would refer to it as runout. Is this normal and if not how do I correct it? Thanks.
  16. M

    Water Pump Woes

    1992 40HP Mariner 4 cyl. Searched the forums but havn't found any relavent info. Hoping someone can offer some assistance. <br />Problem 1)After removing the lower unit I noticed that the water pump housing is not separated/protected from the exhaust tube. Is this normal ? Parts dwgs online show...
  17. M

    Steering cable substitution

    I am in the process of moving the side console and control box and will need to replace the steering cable. The existing cable has the following printed on it - SSC7208 TELEFLEX. I think it is a rotary type system but not certain. What cables or systems are compatible with this number ? I didn't...
  18. M

    Control cable replacement - Mariner 40HP

    Will be moving the side console and control box and need to replace the control and steering cables as a result. The original control cables have the following printed on them - QUICKSILVER 08 20 84 7FT. What do I use if switching to Teleflex ? Are there other mfr's to choose from ? Is there a...
  19. M

    Composite props - any feedback ?

    Thinking of getting one for my 40HP as a spare or primary prop. Existing prop is 10 1/8 x 15 pitch 3 blade. The composite prop is 10" x 13 pitch 4 blade. Would they be compatible as far as performance and RPM ? Thanks all.
  20. M

    Prop swap - affect ???

    What would be the affect of changing out a 10 1/8" x 15" pitch prop to a 12 1/4" x 11" pitch prop ? Just curious how diameter relates to pitch and the overall effect.
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