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  1. stresspoint

    Cannot reinstall lower unit on 1990 150 blackmax

    don't force anything , it should just slide into place if everything is correctly in place , ? is the motor trimmed full up ,this will make life easier
  2. stresspoint

    Swapped Thunderbolt IV for Delco EST

    if you haven't swapped any leads around then yes , you have not aligned TDC , compression stroke on #1 cylinder . if you have room you may be able to crank the dizzy around enough to get it to run.it sounds as if you may have ignition retarded , but try both ways about 1/2 an inch either...
  3. stresspoint

    Time to chuck the 470

    i was contemplating converting my Maxum SR1800 with a 4.3 to a 5.7 V8 , after looking into the amount of work to move things and make stuff fit, and advice from people i decided against the conversion , that being said , i hindsight , with all the trouble i went to to get a 4.3 to how i...
  4. stresspoint

    Clicking noise when rev,d up

    ? does the click go away when you are riding along or is it just on the muffs
  5. stresspoint

    Hummingbird no fish alarm

    i like the find my way home feature , it great on the river , i never get lost. also i have not hit the sand banks in the estuary once since i fitted one to the new to me boat , that depth finder is the best feature, mo more sand rooster tails . it also has a fish finder , but i don't think...
  6. stresspoint

    Hummingbird no fish alarm

    its ok mate , claim warrantee :) , not a good fish finder if it cant see fish . just FWIW , i drove around seeing schools of fish all over when i got my first fish finder , couldn't catch a single bite , "" turned out i had it set on demo mode"" . we are not going to survive are we !
  7. stresspoint

    F70 Yamaha, how many hours are possible before major rebuild?

    use it or loose it is my moto with yammy F 4 strokes ,iv pulled a few apart with corrosion in the head and engine block where the head gasket is the weak point , also a couple with corrosion on the lower exhaust port . all these motors were low hour for age . 1400 hours on a 2014 motor , go...
  8. stresspoint

    Front wheel drive launching & retrieving

    if you are in doubt , grab a block of 5x5 wood drill a hole and tie a rope long enough to reach from the rear wheel to the driver seat . chock it behind the wheel to stop the car rolling backward , once you get moving just pull the rope . and retrieve your chock. one ramp i use is steep and a...
  9. stresspoint

    Tips for removing intake manifold V6 4.3

    TDC compression stroke on #1 cylinder , as above . remove plugs , un plug distributor power wire > put finger over where #1 plug is ( furthest cylinder forward) > get helper to click motor over till compression comes up > look at front balancer and aligns the TDC mark > remove distributor cap...
  10. stresspoint

    Stall during acceleration

    sounds to me like the timing is not advancing , use a timing light to check if the mechanical advance is working , it may just need some lube.
  11. stresspoint

    yamaha fourstroke crank bearings

    ACL Race 4B2166H-STD , check these for size against your old ones.
  12. stresspoint

    Has anyone built a boat with Marine Plywood

    search "Thai river boats " some of those things are made from used ply board packing crates .
  13. stresspoint

    89 Volvo Penta AQ271C ignition or carb, maybe something else

    iv been following this thread , time to chime in :) . recheck that all the wires are on the correct firing order , sounds like 2 are swapped . take them all off and start from scratch , don't try to just follow the leads , its too easy to get muddled up .
  14. stresspoint

    4.3 Harmonic Balancer

    come on mate give me a break here :) , i read through soooooo many posts and references when i was building my motor i would not even know where i read that info. i would love to share my findings and get confirmation from those that know these motors more than i do , fell free to PM me if you...
  15. stresspoint

    4.3 Harmonic Balancer

    exert from the bible which i studied when i was learning about the 4.3 (thank you Scott Danforth ) ) >> However, you should also be aware that all of these engines are externally balanced with various combinations of flywheels/flexplates and dampers for balance, and that they are "trimmed" at...
  16. stresspoint

    4.3 Harmonic Balancer

    i just recently went through this fiasco and found some interesting info. depending on motor year S/N the harmonic balancer / dampener could be unique to that year 4.3 motor .(crankshaft cast # , build location , boat or truck motor) also the rotating assembly could be a balanced set from...
  17. stresspoint

    Merc 4.3

    i asked my mate to flow test my later model 4.3 vortec heads (2014/15 Mercruiser) to check if improvements could be made to get quicker RPMs off the line , he came back at me saying " leave them as they are " ,> for a 2 valve per cylinder head they are pretty darn good. he basically skimmed them...
  18. stresspoint

    Merc 4.3

    i recently bought a Maxum with a 4.3 and encountered a few problems that were pretty much normal for any inboard marine engine , mostly they were due to lack of maintenance by PO and lack of knowledge on the 4.3 by myself . i learned lots about these little motors i ended up getting over 6k...
  19. stresspoint

    Thunderbolt 5.0 keeps dying

    hot wire the fuel pump and check it , sounds like its dead ,
  20. stresspoint

    Water in Engine Oil 5.0 Liter MPI 2002

    the problem you have is without tearing the top end of the motor down you are not going to find the smoking gun . you need to get that milky oil dispersed before going any further . i found going to a local garage and grabbing a few jugs of used oil was the best option for flushing water logged...
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