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    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    I did the honing the damaged are disappeared on number 2 it took 10 minutes with tye 240 stone hobe. I have not done the flex ball yet. By the way the #1 piston when I took it out a1/2 inch piece of the top ring was broken off and fell out. Do I really need new pistons for all, can I buy used...
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    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Does anybody know what this part is. It came off when I removed the engine.
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    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Ok so everything is out Only 2 things that were a pain thebflywheel and the cover that allows acces to the bolts that face down. It was frozen into place and I had to heat it up. So for the first time doing this one I thing I did good. Only broke 2 bolts. Odf thing was when Intook the adapter...
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    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Thanks for that, good to know so being cast iron I don't need the aluminum oxide hone? I can get the Silicon Carbide right? Ok I got the flex 240 grit 3.5 size Silicon Carbide. I will get a 4 inch stone hone from Harbor freight but they only have the Aluminum Oxide.
  5. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    I would snap-off if I don't use snap-on right?
  6. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    A 3.5 ball hone aluminum oxide should be enough right? This is an aluminum cylinder right? Or did you use the regular type? And the grit, did you use one size? I never used the flex always used stone în the past. And do you do dry honing or honing oil, 10-30 oil,Water etc
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    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Ok so what do you think about my measurements of tye cylinder walls? I posted it above. The second engine is the same. I want to try to hone. You said stone hone. I shared a video above where the guy advices against it and shows why, he uses the flex hone.
  8. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    This was the newer flywheel. The one from the second engine looks like it's an original 1990. Don't even wanna think about taking it off right now.
  9. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    So I hit another snag trying to take out the flywheel. The 3 holes that they provide size M6x1.0 are a freaking joke. Who the heck engineered this for a used stuck corroded flywheel to use those size bolts in aluminum. They basically got pulled out instantly so I made the holes bigger and...
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    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    The second engine measured the same. Only did number 2 cylinder that had 110 compression. I looked at it close and there is some build up of aluminum. It feel above the walls when I use my nail. So the one spot that has one palpabile scratch it is between 2 high spots. The telescoping gauge gets...
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    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Ok these are the measurements. Errror of .001 or .0015 could be there.
  12. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    These are the specs in my book which is for a 92 but should be the same I think. Is 3.375 max or standard?
  13. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Will get back to you after, thanks for the input.
  14. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Found this older thread I hope mine is not already oversized. https://forums.iboats.com/threads/1990-force-120-cylinder-bore-help.373694/
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    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Now to the cyl wall findings. It is scarred. Can honing clear it? What type hone flex, stone or brush? From What I read the ball hone is the best. The other 2 get stuck and can cause pitting. They use muriatic acid to get any caked aluminum off. Then they use honing oil for the surfacing. Hope...
  16. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    I ordered a snap on 6mm and a Gearwrench one.
  17. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    I ordered a Snap on hopefully it will do.
  18. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    You don't think Gearwrench will cut it?
  19. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Thanks
  20. G

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Ok I am stuck at the connecting rod bolt. What the heck size is that? Is it a 12 point or special size? It's smaller than a 7 and bigger than a 1/4
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