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Recent content by rico649

  1. R

    251 Prop Slip issues

    Ok, So yea. This is exactly how I bought the unit. I've order a stainless steel skeg guard and I did some finishing work on the lower today. Took out all the dents and kinks and sand it down. Once I've primed it up tomorrow and install the new skeg. I'll upload pics. Hopefully she'll as good as new.
  2. R

    251 Prop Slip issues

    @ezstriper. I redid the floor in the boat, took out all foam besides around the fuel tank. Have all the pics on my photobucket. The motor dynoed 735hp when it was first build. It now has 103 hrs. on it. It's appears to me their is no shortage of power because of the rpm that the motor spins all...
  3. R

    251 Prop Slip issues

    No, none of the props have vent holes. No, the boat is not even floating, water is still breaking at the middle of the hull almost. I was speaking to someone with a similar setup yesterday n they told me my problem was the condition of my lower unit. It has some gashes and the skeg was...
  4. R

    251 Prop Slip issues

    yes, that's gps, boat has no trim tabs. yea I know. engine was build by chief marine down in ft. Lauderdale and dynoed 735hp. 540ci supercharged, she isn't short of power. no I haven't used a straight edge on the bottom
  5. R

    251 Prop Slip issues

    I bought the outdrive used, but I think its a 1.5 with the 1 1/4 propshaft
  6. R

    251 Prop Slip issues

    I have a 251 convincor and am having an unusual prop slippage issue. The boat have a 750hp big block attached to a Bravo x outdrive in stock height. I ran a 28, 30 and 32 bravo 1 prop and slippage number measured around 33 % for the 28 n 30, and 35 % for the 32. I tried a 5 blade labbed prop...
  7. R

    750hp for 1988 convincor 251??

    nice... @miller Did your 251 handle the chop very well especially at that power level @ezstriper
  8. R

    750hp for 1988 convincor 251??

    New Floor installed. So, am a little bit ahead of schedule. The new floor is down and just waiting to cure properly. http://s1224.photobucket.com/user/Rico649/media/Mobile%20Uploads/image_zpsiejyjq25.jpg.html?sort=3&o=3...
  9. R

    750hp for 1988 convincor 251??

    Photos of Convincor Just picked her up from the port. http://s1224.photobucket.com/user/Rico649/media/Mobile%20Uploads/image_zpskksniebw.jpg.html?o=0 In back of the yard, starting surgery. Pulling the old floor to redo...
  10. R

    750hp for 1988 convincor 251??

    Thanks for the feedback guys. I don't know how to upload images to the thread. If you can tell me how to, I will... thanks in advance
  11. R

    750hp for 1988 convincor 251??

    So I got my new checkmate convincor in last week( well old but new to me). I'm currently re-doing the floor so she can be solid once I'm ready to touch the water. My initial plan was to run twin mercury 3.0 efi 250hp engines. I was planning on taking one off of my starflite and purchasing a...
  12. R

    Modifying a mercury 250 efi for 300hp

    Ok. I ran my boat today with my buddy 26p chopppa. Simon computers n everything else stock. Did 73mph by myself n 71 mph with 2 people. Half tank of gas. My next mod will be heads. Do you know if the 250 pro xb heads have a different cc from the stock 250 efi heads??
  13. R

    Modifying a mercury 250 efi for 300hp

    Just got out the water trying my buddy's 26 choppa. Got 73 mph gps by myself and 71mph with a passenger. That's with Simon computers, everything else stock. My reeds should be here on Monday so once they arrive, I'll go for another run
  14. R

    Modifying a mercury 250 efi for 300hp

    ok, I found a trophy 24 on craigslist but can't get in contact with the owner. Guess ill try again tomorrow. My computers arrived from simon today along with my solid mounts. Installed them this afternoon. So tomorrow I'll go for a test run see if I can notice a difference in performance...
  15. R

    Modifying a mercury 250 efi for 300hp

    Ok, I think I'll stick with mines. Can't wait to get my computers back to see if I can spin my 24 choppa over 6k, that should give me some good gains in mph. The acceleration on the 24 is crazy kool, just sucks at top end. hopefully that all changes
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