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  1. J

    tac question

    Looking to get a new tachometer for my 1989 3.0 merc. With points do I need one for points or does it not mater?
  2. J

    spark plug info

    I have 1989 3.0 mercruiser the spark plug part number on the motor is AC MR 43T is this ac Delco plug can I get this at an auto part store? Or another plug part number I can use.
  3. J

    help fuel leak

    Well, I pulled my boat out of storage and I smelled gas. I looked at the drain plug and put my hand into a puddle and smelled gas. To go back a bit, we had 10'' of wet snow and it bent my pole and the cover dropped then it got warm rained and got cold. I stopped to look at the boat to make sure...
  4. J

    fogging spray

    what is it, where can you get it like an auto part store?
  5. J

    carb question

    on the iboats parts is the mallary carb any better than stander carb? if you needed to replace one.
  6. J

    info lower end size

    working on some info to get a top end prop for my 1989 3.0L,20' maxum and on the side of the lower unit for the gearing it has 1:98 is this a high gear?
  7. J

    motor question

    what year did mercruiser start putting fuel injection in there motors. is there a 3.0 EFI? next question is the block of 3.0 length is it the same of 305 V-8 front to back my question is can you switch out a I-4 to a V-8? small block with out moving the front motor mount in front of the water...
  8. J

    prop testing need input

    i have 1989 maxum open bow the boat info is 20' ,130 hp 3.0L ,30 gal gas tank, i do have hydrafoil, the lower end is mercruiser aipha one drive the test i did was 18p-14.5 4-blade 4600 rpm@32 mph the other prop was a 3 blade 17p-15.5 @5000rpm 35 mph prop are alum. the 3-blade had better hole...
  9. J

    motor size

    what make 3.7 differnt from 3.0 . Can you get a better or bigger carb for a 3.0
  10. J

    2-batt or 3-batt need help

    Just picked up a boat for my famly to have fun with and do some fishing also. Bought a trolling motor 24 volt 75 lb thrust for my 1989 maxum 20' open bow. My question is can I just add one battery to the boat battery system to get the 24v? Also bought an on board battery dual bank charger. Can I...
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