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  1. Anyone messed with the late model 25hp yamaha 2 cylinders?

    I've got one just to play with and am wondering what these little motors respond well to. Porting? Shaving head for higher compression? Bigger carbs? Exhaust tuner modified? What I'm thinking right...
  2. Replies
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    Depends on which tiller you get. the new or old...

    Depends on which tiller you get. the new or old style. Never messed with the new style with trim in the handle. With the old style, you will need a remote kit, reverse the gear on the throttle shaft...
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    What props were sent and what was the performance...

    What props were sent and what was the performance of each and on what boat and motor?
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    Ron, Please send the 12.5 x 22 and 12.5 x 23...

    Ron,

    Please send the 12.5 x 22 and 12.5 x 23 omc clones hubbed for a merc 40 and a 13 spline 18 and 20p choppers.
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    They say it is 1000' buoy to buoy. I don't know...

    They say it is 1000' buoy to buoy. I don't know if they use a range finder or not, but it is close to that.
  6. Thread: Too much oil

    by BRzuki
    Replies
    18
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    4,532

    You need my little merc chopper in the...

    You need my little merc chopper in the classifieds Nason! Put a hub in it and 7500 shouldn't be any problem once the motor loosens up a little.
  7. thanks for the offer Mike. Prop arrived the other...

    thanks for the offer Mike. Prop arrived the other day.
  8. Thanks for your help. Looks like the seller has...

    Thanks for your help. Looks like the seller has had a change of heart.
  9. Thanks 1100r. Yeah you would think someone would...

    Thanks 1100r. Yeah you would think someone would be willing to help me out, but no such luck as of yet. What is HR??
  10. Maybe I need to be a little more specific. I'm...

    Maybe I need to be a little more specific. I'm needing help buying a prop from a guy that will only deal locally. I can PayPal, send check or money order and will include a nice little bonus for your...
  11. Anybody in the Hartford, CT or Windsor Locks area?

    Anybody on this board from that area? I'm needing a little help.
  12. Replies
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    4,126

    Ron this is the prop you just sent me along with...

    Ron this is the prop you just sent me along with my 15p semi cleaver you repaired
  13. Replies
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    4,126

    I think that "ski roll" would help a lot. This...

    I think that "ski roll" would help a lot. This prop doesn't seem to have any cup or roll on the last 1/3 of the blade going towards the tip.

    What all kinds of pictures do you need?
  14. Replies
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    4,126

    Cleaver prop help

    So what's the trick to getting a boat out of the hole and up on plane with a cleaver prop. I've got a hydrotech 40 merc on a 556 Edge aluminum boat....very similar to a WeldBilt. Running a 12x20 thru...
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    5,572

    http://www.ptprop.com/index.php?page=shop.product_...

    http://www.ptprop.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=33&category_id=24&manufacturer_id=0&option=com_virtuemart&Itemid=46

    This prop in a 21 pitch would be a...
  16. Replies
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    5,572

    Gear ratio on the 60 etec is 2.67:1

    Gear ratio on the 60 etec is 2.67:1
  17. Replies
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    5,572

    Boat isn't for sale anymore...I gotta come whoop...

    Boat isn't for sale anymore...I gotta come whoop all y'all cache and white river boys. The hook is the same as trim tabs except its a more fluid approach compared to trim tabs which are more abrupt...
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    Yep...I haven't slowed a boat down yet doing that...

    Yep...I haven't slowed a boat down yet doing that either.

    Also said to try a low rake prop instead of that 20+ degree raker, weld trim tabs on the back and adjust them accordingly, put a higher...
  19. Replies
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    5,572

    I wouldn't waste your time. I've told him...

    I wouldn't waste your time. I've told him countless times over the last 4 or so months how to fix his boat to sit back on its tail and run out and he has yet to try anything I have told him.
  20. This is the smack boat section is it not??? 3...

    This is the smack boat section is it not??? 3 cyl tiller on a 13-15 foot aluminum boat.
  21. What's the best prop design for circle racing? Holeshot/drag racing?

    Title says it all....what's the best prop design y'all have found for circle racing? Also, what do you guys feel is the best prop for a holeshot style drag race?

    Over hub Chopper?
    Over hub...
  22. Replies
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    5,637

    E3.32 is the plug number for the E3 plugs.

    E3.32 is the plug number for the E3 plugs.
  23. Replies
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    5,637

    Always had the best results with E3 plugs in the...

    Always had the best results with E3 plugs in the little yamahas.
  24. Replies
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    6,789

    The first of these boats were produced a year ago...

    The first of these boats were produced a year ago this past September I think. It's a new boat, but the guy that is building them is the guy that started Excel boats which look similar, but are...
  25. Replies
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    6,789

    11" diameter with some cup added. Turning around...

    11" diameter with some cup added. Turning around 6290 rpms.

    Mike in any other boat I would say you are right, but this hull is not any other hull. It really lifts out of the water. Aside from...
  26. Replies
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    6,789

    Edge Boats by Waco is the fastest boat made....

    Edge Boats by Waco is the fastest boat made. Faster and much more durable than weldbilt. The hull design is more along the lines of a performance hull as opposed to just a slight v bottom boat of a...
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    1,415

    I bought one of these props off of ebay as well...

    I bought one of these props off of ebay as well after turning a 11X18 4-blade 6400 at 54.4 mph. My motor as a little more done to it than what you listed, but I'm thinking it should turn about...
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    1,744

    88, what do you mean a cold engine will wear...

    88, what do you mean a cold engine will wear itself out?

    Where can I find a hotter thermostat for a 40 merc?
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    just buy a new one...they are cheap enough @ $50.

    just buy a new one...they are cheap enough @ $50.
  30. Replies
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    Thanks for clearing that up. I'll be looking at...

    Thanks for clearing that up. I'll be looking at other, more durable reed options then, because the durability just wasn't there for me with the sport reeds.
  31. Replies
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    I was under the impression that the sport reeds...

    I was under the impression that the sport reeds were the thinnest he made and they increased in thickness to the racing and to the drag reeds.

    I ate up a set of sport reeds really quick (less...
  32. Replies
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    fs5, any luck with the cut tuner?

    fs5,

    any luck with the cut tuner?
  33. Replies
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    3,994

    call him and ask which one's he recommends at...

    call him and ask which one's he recommends at that rpm range. He will know best since he is the one that makes them.
  34. Thread: 1.83 gears

    by BRzuki
    Replies
    2
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    1,830

    How much difference will that make Jackson? Which...

    How much difference will that make Jackson? Which 1.63 gears fit into the 40/50 case?
  35. Replies
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    Thanks fs5, How much weight did that take off?...

    Thanks fs5,

    How much weight did that take off? Do you feel the gain is worth the cost?
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    I need a merc 40 flywheel lightened

    Can anyone point me in the right direction? I've got a spare that I would like to have lightened.

    Thanks
  37. Replies
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    jets are different, numbers are different, but...

    jets are different, numbers are different, but mercury seems to have made a new carb for these motors everyother week based on their numbers. I really just need to know if the venturi is the same. I...
  38. Replies
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    Surely somebody knows what the difference is in...

    Surely somebody knows what the difference is in these two carburetors??? The reason I ask is I'm needing a set of 60 carbs, but have only been able to find 50's for sale and don't have a way to...
  39. Replies
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    Difference in merc 50 hp and 60 hp carbs

    Hey guys!

    What's the difference between the 3 cyl mercury 50 hp carbs and the 60 hp carbs? Is the venturi bigger on the 60's or is it just a matter of jetting and timing?

    Thanks.
  40. Replies
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    How to stop porpoising???

    I'm having a terrible time with my boat porpoising. The boat is a 1548 aluminum with 8* V and I am currently running 6" of set-back. I run either a 25hp yamaha 3 cylinder or a 40hp Mercury 3...
  41. Replies
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    Those jets are for the M50D carbs. They will fit...

    Those jets are for the M50D carbs. They will fit in the M40's.
  42. Replies
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    1,952

    Reed Stops or No Reed Stops??

    Should I run reed stops on my 40 merc with 60 carbs and worked reed plate or should I just use the reed retainers like on a 60?

    Currently turning a 15p 6200 rpms. The guy that did the reed plate...
  43. Replies
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    7,244

    The diaphragm on the front side of the pump that...

    The diaphragm on the front side of the pump that is actuated by the top cylinder via vacuum hose was breaking down (delaminating) thus flooding the top cylinder at WOT. Fixed that issue and it ran...
  44. Replies
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    7,244

    Got a chance to run the motor this evening after...

    Got a chance to run the motor this evening after putting a new fuel pump kit in. It ran like a scalded dog. 400 rpms and 3 mph gained. I ran the .060 jets and did a WOT electrical shut down plug...
  45. Replies
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    7,244

    I did the WOT/kill switch plug check on the water...

    I did the WOT/kill switch plug check on the water and not on the trailer. The plugs were as described. Only the top plug was black. The middle and bottom plugs were tanned.

    I'm not sure if it was...
  46. Replies
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    7,244

    I'm running a water/fuel filter separator so I...

    I'm running a water/fuel filter separator so I have no worries of getting trash in the carbs.

    I ran the motor yesterday and tried pumping the bulb with no change in performance, the fuel filter...
  47. Replies
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    7,244

    Where can I get the other size jets at...

    Where can I get the other size jets at specifically the 56's?
  48. Replies
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    7,244

    The next size down that I have are 58's so I'll...

    The next size down that I have are 58's so I'll give them a try. I also removed the in-line fuel filter between the carb and the pump. Just gotta wait until monday to get back to my boat and try all...
  49. Replies
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    I'm not positive that it is not starving for...

    I'm not positive that it is not starving for fuel...I really never thought about that until now. I'm keeping fresh fuel (no older than a week from the pump) in at all times and always add a...
  50. Replies
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    Rev limiter has been disconnected Bill, My...

    Rev limiter has been disconnected

    Bill,

    My motor and the other motor that the carbs ran great on are the exact same motors. Both 59 cubic inch 3 cylinder 40 mercurys. Both are long shaft,...
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