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  1. Scott Danforth

    1998 Mercury elpto on stand slow cranking

    clean all your battery cable connections from the battery to the block and starter and back. by clean, they need to be shiny enough your mother in law would eat off them.
  2. Scott Danforth

    Query about raising outboard 6" on transom

    buy a jack plate. that way you can raise it for mooring and then lower it to use it. if you raised the motor 6", you would never get on plane, and even though the pickup ports are below the water, the water pump wouldnt be and it would never prime and you would toast your impeller the first...
  3. Scott Danforth

    Blue smoke during warmup

    since your boat is a 1990, you either have a Mk IV motor (2-piece RMS, flat tappet cam) or a Gen V motor. if its a gen V i would recommend upgrading to Gen VI (1996 and later) the 1990 Gen V blocks are the first year of priority mains oiling and there were goofy issues with the steam holes and...
  4. Scott Danforth

    Mercruiser 3.0 135hp. Crank and rods

    scat doesnt make a crank for a GM 3.0 if you dont believe me, here is there offerings https://www.scatcrankshafts.com/about-crankshafts/crankshafts-product-search/
  5. Scott Danforth

    Mercruiser 3.0 135hp. Crank and rods

    your crank needs to be reground or replaced.
  6. Scott Danforth

    No spark plug spark... 170 MC , 1985 Sea Ray

    the wire on the coil negative goes to the points. the other two terminals there are the shift interrupt and the tach. we covered this before.
  7. Scott Danforth

    Mercruiser 3.0 135hp. Crank and rods

    you need new rod if it was blue and a new crank
  8. Scott Danforth

    Reliability of 1998 25hp EH

    for 1700 I would find a better maintained motor to start with.
  9. Scott Danforth

    Reliability of 1998 25hp EH

    a well maintained motor is reliable as he# a neglected motor run hard and put away wet (without any of the maintenance racer mentions) will die. most motors dont die, they are murdered from lack of preventative maintenance
  10. Scott Danforth

    Changing Chrysler i/b to Chevy i/b process

    vortec heads only have 8 vertical bolts for the intake manifold.
  11. Scott Danforth

    Deep cycle battery box

    the battery you have is a sealed lead acid battery. it needs to be mounted up-right and should be in a battery box.
  12. Scott Danforth

    What´s the best replacement for AQ271C (or 570) 5.7 GM engine, ideally stroker?

    the edelbrock is a good manifold. same as the stock Volvo Penta vortec manifolds that I ran. go with a 1" minimum, 2" preferable carb spacer to increase plenum volume under the stock carb. will give you some tuning tips on the holley later a good timing set (melling, cloyes or comp cams), a...
  13. Scott Danforth

    Changing Valve cover gaskets 5.0 GXI-e

    do you have any traces of rust on the top of the valve covers, if so, you could have them rusted thru around the return that makes the lip. check the condition of the breather elbow grommets. and breather tubes. as stated above, doubt the rubber gaskets under your valve covers are what is...
  14. Scott Danforth

    Deep cycle battery box

    I would go with either AGM or Gel and not worry about the box. Battery boxes are for flooded lead acid batteries
  15. Scott Danforth

    Blue smoke during warmup

    12k is a lot of money for two rebuilds. I would inspect everything prior to buying parts. Line hone and decking is a must. I also recommend zero balancing A new crank is about the same cost as reconditioning the stock crank, and new rods are cheaper than reconditioning. I would seriously...
  16. Scott Danforth

    Holley Gurus needed

    awaiting air bleeds and IFR/emulsion jets from Summit new pin drill and pin vise showed up...... was supposed to ship from Orlando (2 day by mail tops). shipped from New Jersey and took 9 days to get here.
  17. Scott Danforth

    No spark plug spark... 170 MC , 1985 Sea Ray

    could be sloppy dizzy bushings pull the cap, pull the rotor. grab the shaft and wiggle. if the shaft moves more than .007" radially or .020 vertically, pull the distributor and go to napa and spend $10 on two distributor bushings. then put the thing back together, re-gap the points, verify...
  18. Scott Danforth

    Blue smoke during warmup

    except you tested the gauge.
  19. Scott Danforth

    No spark plug spark... 170 MC , 1985 Sea Ray

    9 volts is standard with the ballast wire. your issue is somewhere between the R terminal to the coil +
  20. Scott Danforth

    Oh this can't be good. MErcruiser 5.0L loud clicking.

    a brandy new 5.7 longblock GM motor from GM is only $3200. add a new set of manifolds, some gaskets and do the job yourself and your into it for $4500 local machine shop (not your marine guy) could probably rebuild your 5.0 GM motor for about $1500 heck, even if you had to buy new heads from...
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