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  1. Replies
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    151,305

    Nice work Tim!!

    Nice work Tim!!
  2. Replies
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    15,987

    I get 180psi out of mine, but don't use it daily..

    I get 180psi out of mine, but don't use it daily..
  3. Replies
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    15,987

    Lightened flywheel, welded crank, HydroTec high...

    Lightened flywheel, welded crank, HydroTec high compression head, coated pistons, Fiber reeds with massaged cages, custom tuner pipe....http://youtu.be/uqRzw5Tihu8
  4. Replies
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    15,987

    I have 145's in my 70 carbs mounted on a 40hp and...

    I have 145's in my 70 carbs mounted on a 40hp and they are on the edge of lean. Finger ported motor.
  5. Replies
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    14,473

    Contact Sid Bass @ (390) 373-3839

    Contact Sid Bass @
    (390) 373-3839
  6. Replies
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    14,473

    Here are some pics from it running this past...

    Here are some pics from it running this past weekend.
  7. Replies
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    14,473

    The mid section and gear case are made by Bass...

    The mid section and gear case are made by Bass Machining in Seattle Wa. It's a direct drive 15/14 gear ratio. The engine turns up close to 9000rpm and currently runs in the mid 80's.
  8. Replies
    15
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    14,473

    40hp Yamaha

    Here's a 40hp model that I put on a 9" mid.
    58350
  9. Replies
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    2,378

    Thanks

    Thanks
  10. Replies
    2
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    2,378

    Yamaha fuel pump

    I'm running a set of 70hp carbs on a 50hp powerhead. Is the 50hp fuel pump the same as the 70hp fuel pump and will it have any trouble keeping up fuel delivery to the 70hp carbs?
  11. Replies
    34
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    31,137

    Look at post #22, it shows where Tim Kurtz did...

    Look at post #22, it shows where Tim Kurtz did the spot welds on my Yamaha crank. The cranks are a press fit and could reposition under extreme loads. Spot weld makes sure that does not happen. Don't...
  12. Replies
    34
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    31,137

    That is correct. Had mine done like this.

    That is correct. Had mine done like this.
  13. Replies
    34
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    31,137

    I got mine at boats.net

    I got mine at boats.net
  14. Replies
    622
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    1,163,780

    Sticky: Now that's a good idea!!

    Now that's a good idea!!
  15. Replies
    22
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    10,389

    Any progress lately? Hopefully things will be...

    Any progress lately? Hopefully things will be thawing soon in Mich.
  16. Replies
    209
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    251,652

    Could you post pictures of the Merc. turbo 44....

    Could you post pictures of the Merc. turbo 44. I've heard folks talk about this motor but have never seen this beauty. Thanks for the V6 postings, you clearly have stout stones!
  17. Replies
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    Excellent Alan!! Thank you for sharing.

    Excellent Alan!! Thank you for sharing.
  18. Replies
    209
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    251,652

    Hey Tim, would love to see more pictures of...

    Hey Tim, would love to see more pictures of Dixon's rig...better yet, where can I see it run!
  19. Replies
    209
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    251,652

    Thanks for the comparison info. Certainly puts...

    Thanks for the comparison info. Certainly puts things a bit more in perspective. Do you plan to have it "barking" at Mark'
    s show?
  20. Replies
    47
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    27,793

    Yes, there pumbed into the bottom water intake to...

    Yes, there pumbed into the bottom water intake to the block. Have all cooling venting on the tuner and out the top of the block.
  21. Replies
    10
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    10,849

    Boyesen fiber reeds

    I have 4 seasons of hard racing on a set of dual stage reeds in my modified 75hp omc and they still look great. I also have a set of Chris Carson reeds in my 44xs that have 1 season on them and they...
  22. Replies
    11
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    6,133

    Crush!

    On my 44ci Merc, I had Jim Ruck crush the block. Not real sure how the process works but he was able to bring my block to the minimal cc's spec allowed in stock racing. Give Jim a call.
  23. Replies
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    27,793

    I'll just stick with the round carbs, for now....

    I'll just stick with the round carbs, for now. Until I can open up the "choke" between the carbs and the crankcase, I don't think the inlet flow is going to help that much.
  24. Replies
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    27,793

    Carbs and internal mods

    Karl,
    Can you explain to me the specific advantage to the "square bowl" carbs over the "round bowl" ones. I was told that, of the 70hp carbs, the round bowl ones were the only ones that would fit...
  25. Replies
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    27,793

    Karl, So far I've only got it going to 83mph...

    Karl,
    So far I've only got it going to 83mph testing. The reps at that run was 7800rpm. The cylinder compression is 175psi and I only run VP Race fuel with 16/1 oil.
  26. Replies
    47
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    27,793

    Hydro

    The boat that I run the Yamaha on, is a hydro that I built myself. The hull was built for the 44ci Mercury @ 12ft, but it handles the lightweight Yamaha well.
  27. Replies
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    27,793

    Yes, the flywheel is pressed on. Reduced a lot of...

    Yes, the flywheel is pressed on. Reduced a lot of rotating mass gettin it off there.
  28. Plug wire

    I had the same thing happen to me at a race this past season on my 4cyl Merc. Didn't find the problem until someone grabbed the wire and pulled on it. Since then, I've run a nylon tie wrap around...
  29. Replies
    47
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    27,793

    70hp carbs

    I recently got a set of 70hp carbs, just haven't got them together yet. Those, and a spacer plate for the exhaust, are next.
  30. Replies
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    27,793

    Testing

    Yamaha 40hp.

    http://youtu.be/uqRzw5Tihu8
  31. Replies
    32
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    22,679

    40 Yamaha

    Ran mine at 8300rpm yesterday and got me a 2nd place finish with it running against 3cyl Johnrudes. Just starting to tune the thing, so hoping for more.
  32. Replies
    47
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    27,793

    Carbs & timing

    The carbs are from a Yamaha 50hp. The timing is fixed, while in operation. Since I primarily run @ W.O.T., I set the timing up for maximum setting. I adjust it, when I need to, with a timing light.
  33. Replies
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    27,793

    40hp Yamaha

    The modded 40hp Yamaha has been on the back burner for a few months. I had the head/water jacket machined to fit the cylinder head temp. gauge. Have the carbs jetted @ #130 and the timing set @ 28...
  34. Replies
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    34,635

    rejet

    I'm pretty sure he meant to check to see if your too lean. You may want to consider putting bigger jets in if you increased the bore size and made the intake track more efficient with aftermarket...
  35. Replies
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    Thanks!

    Thanks guys, hope to get some testing in at the end of May. If all goes well, plan is to start racing it in June. I will keep you posted with results and videos.
    Joe
  36. Replies
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    27,793

    Modded Yamaha

    40hp Modded Yamaha had it's first "fire in the hole" this morning. Going to time it, break it in then see if it can run with the big dogs.
  37. Replies
    15
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    14,721

    16:1

    I use 16:1 on all my engines, stock and modified. I use a synthetic/petroleum blend. Never have had any lubrication issues and spool the mod engine over 8,000rpm

    No secrets in my trailer.
  38. Replies
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    Thanks!

    Got it off with no problem: 43.42% saving in reducing the rotating mass. Should "spool up" a little quicker.
  39. Replies
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    3,515

    Yamaha 3cyl flywheel

    Building a 50hp yamaha 3cyl. and plan on manual start, can I cut the ring gear off to reduce weight?
  40. Replies
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    125,654

    #244 Hull?

    What hull and vintage is the #244 in the pictures. I would love to find and restore one some day. Those are the OPC boats I remember watching when I first started getting into performance boats.
    ...
  41. Hibernation

    Hey Tim, good to see you come out of summer hibernation, Look forward to reading your posts this loonngg winter season.
  42. Replies
    866
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    824,219

    750 motor

    Hey Tim, if running this system on a 750 merc., what psi do you recommend for a set of KC carbs. Can I assume you keep the fuel tank vented? Thanks for all the insight.
    Joe
  43. Replies
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    Thanks Smitty!

    For typing out that good explanation of the squish area.
  44. Replies
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    17,724

    1" carbs

    You definitely want the 1" bores, waisting your time with the others.
  45. Replies
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    [Just my opinion after racing this engine since...

    [Just my opinion after racing this engine since 1989.]

    And quite competetively, I might add!! Hope your doing well Sam.
    Joe Schweickert
  46. Replies
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    219,447

    Saw it run too!

    Personally saw it get pulled out of the trunk of Tim Kurz car. Tim does a great job of "thinking outside the box". Didn't take long to start getting it competetive in FEH that weekend. Very cool...
  47. Replies
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    Polished gearcase

    Thanks Jeff,
    I straightened and polished myself. Lots of sanding and some sore fingers, but worth the effort.
    Joe
  48. Replies
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    Bass unit under 3cyl.

    Here ya go Jeff. Bought from Bass several years ago and put under a 3cyl. OMC. No problems and no regrets. Nice set-up.
    Joe
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