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  1. Faztbullet

    Cylinder Compression Incongruences.-

    You always check any machining work . I checked my own when I used to bore blocks and any others I had sent to have done. How do you know its at spec as you didnt check it the first time and state no where where you checked it when you got it back. Do you understand the purpose of skirt to...
  2. Faztbullet

    Black Max 150 overheating and water pressure

    Temp gauges are inaccurate due to the sender mounting and location can cause different readings.. Put a piece of tape over it and rely on pressure reading as true indication of impeller/cooling operation. It will also run hotter if overpropped as engine is lugging
  3. Faztbullet

    08' Merc 90hp --Ditching The Oil pump/going mixed fuel..

    Got pics? A piston in pieces could be fuel,temp or ignition problem. The looper models dont like to be be overproped and lugged or ran more than 5-700 rpm over max rating. The piston skirts has a tendency to break
  4. Faztbullet

    85' 150hp driveshaft question

    Crossflow parts are everywhere and cheap
  5. Faztbullet

    Tubing, vents???

    Those are the recirc lines and fit on the recirc valve on intake under carbs
  6. Faztbullet

    New 15x17 pitch prop on Merc 165 L6

    The additional diameter helps as prop blade hold more water, this helps in mid range to hold boat "up" at slower speeds
  7. Faztbullet

    Prop Question

    If they are dragging in water when trying to plane a different prop will not help... as posted nedd additional info or pics
  8. Faztbullet

    Is My Mercury Prop Spun?

    Make sure you torque the nut on prop to 55 inch lbs to seat it correctly in hub
  9. Faztbullet

    Is My Mercury Prop Spun?

    Ratio is 2:1....Tex
  10. Faztbullet

    Cylinder Compression Incongruences.-

    The problem is you didn't check the machine work before reassembly... the blame falls on you not machinist. Did you give him cylinder specs? Still honing wouldnt drop compression 10psi unless ring gap is now excessive.
  11. Faztbullet

    Cracked mercury powerhead

    JB weld would melt...just drill a small hole at end of crack to stop it from speading. Motor is over 50+years and unless you have special or nostalgia reasons just run it.
  12. Faztbullet

    1985 Mercury 85hp (4 cyl) runs great for 20 minutes then boggs down

    Floats start absorbing fuel and changes float level, this causes cylinder/s to run rich from flooding.
  13. Faztbullet

    Cylinder Compression Incongruences.-

    If piston clearance was to tight shirt would scuff on pistons....shaving head would increase compression. Cylinder wall clearance has no effect on piston only the ring end gaps. if they honed it enough to drop compression 10psi that engine wont be living long.
  14. Faztbullet

    Cracked mercury powerhead

    Just run it till it fails..eventually it will start ingesting water that is pulled around liner. Seen many a I6 do this.
  15. Faztbullet

    Please help! 2007 optimax 150 problems

    Pull the plugs as you can hear a cylinder clear itself and RPM increase. Could be a injector flooding or lean. I would send em off to have cleaned and flow tested(Brucato)
  16. Faztbullet

    Suzuki DF25A prop

    It doesnt but the manufacturing process is the same on all OEM brands, and they can have the same problems.
  17. Faztbullet

    Cylinder Compression Incongruences.-

    The only way honing would effect cylinder compression is if ring gap clearance is excessive, as compression would blow by. If this is the case the cylinders are past the MFG wear specs. To tight clearance would not increase compression as it is created on top off piston and the squish radius...
  18. Faztbullet

    Craigslist /marketplace or junkyard for donor motor?

    Better to find a old rotten hull or accident one and pull motor..CL or Facebook marketplace.
  19. Faztbullet

    2000 yamaha 115, 2stroke won't run without choking

    Carbs need attention as suggested
  20. Faztbullet

    Fogging Engine (f90 efi)

    I always drain the fuel coolers..seen 4 or 5 freeze and split
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