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  1. Contact Motion Industries

    Contact Motion Industries
  2. Thread: Etec 150 mods

    by thornl01
    Replies
    1
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    9,627

    Contact Gordon @ Monty Racing in FLA. He is...

    Contact Gordon @ Monty Racing in FLA.

    He is the man on the "Green" Engines
  3. Replies
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    You will be better off to go ahead & pull the...

    You will be better off to go ahead & pull the powerhead & replace the tuner.

    When you get this apart you will be amazed at how restrictive the internal tuna/muffler is.

    get some 70/75 3cyl...
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    19
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    7,759

    you have got to get a jack plate ( see Carolina...

    you have got to get a jack plate ( see Carolina jack plate.com) BEST PRICES & simple plates. No new holes to drill, plate mounts to existing holes.

    start looking in prop section here and on ebay...
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    3,360

    Dave Bush & Gordon (Monty) Montegue are two of...

    Dave Bush & Gordon (Monty) Montegue are two of the nicest and straightest shooters you will EVER deal with.
    Both will make super/dependable power & treat you w/ respect.

    LT
    South Carolina...
  6. Replies
    91
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    61,798

    Seen this happen a few times since I started work...

    Seen this happen a few times since I started work on outboards, (1973). the failures usually don't care if they are OEM or Aftermarket. I have Used Both & have no opinion as to which is better now....
  7. Replies
    29
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    22,032

    gears

    I know that this is an old post, But Where are the pictures of the 2.0 /1 nitro gears?:confused:
  8. Replies
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    3,906

    Impeller

    Don't think that you will see much of an improvement switching impellers.

    Are you having cooling problems now?

    Don't need to run much cooler that they already do.
  9. Replies
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    2,626

    trim for short 75

    Use clamp swivel & trim from a yamaha pro 50, these work great. very easy to do.
  10. Replies
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    5,746

    wiring

    Solid purple, Switched 12v

    Purple w/ white tracer, choke / primer
  11. Replies
    140
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    251,541

    Performance ?

    Expected Performance Gains ?

    Would this help also ?

    Dimensions ?
  12. Replies
    15
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    11,191

    cone w/ pick-up

    The pricing from Bob's is not exactlly correct,

    For $ 179 plus shipping, you can buy the kit from Bob's & install it your self.

    No rocket science here, Just attention to detail & think about...
  13. Replies
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    6,187

    75 Engines

    Yes the 86 on engines have the bottom end, But you will still need to look back a few years for the short midsection.

    The BEST of the BEST was a "Pop powered 75".

    Mr Dan Pigot Sr had the stuff....
  14. Replies
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    9,606

    cooling

    Thanks Bill,

    This engine definately took out the center cylinder & head.

    Got a later model head for the rebuild.

    Should I still drill the pistons (1/16" hole) to oil the bridge ?

    Lawrence...
  15. Replies
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    56" omc cooling

    Got a stock rebuild to do on a 1986, 70 hp, 56" rude.

    need any additional info on cooling upgrades for the middle cylinder.

    Have already "backed out" the bridge on all the exhaust ports and...
  16. Replies
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    3,146

    The "outer" magnets on an OMC flywheel have no...

    The "outer" magnets on an OMC flywheel have no influence on how many times or when the engine fires. These magnets create the 'magneto" voltage that is stored in the power pack & then sent (when &...
  17. Thread: Port map.

    by thornl01
    Replies
    25
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    12,562

    Just learning how to decipher Fred's CODE...

    Just learning how to decipher Fred's CODE language is hard enough.
    Plenty of round about statements, but no info.
    Just need a factory fr19 map, not someone's hard earned secrets.

    LT
  18. Thread: Port map.

    by thornl01
    Replies
    25
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    12,562

    Port map.

    Does anyone out there have a factory port map for a FR19s that you could share ?

    Need a good baseline on where to start on a 49" .

    Thanks

    lawrence Thornton

    Florence SC
  19. Replies
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    5,046

    Allison

    That looks like Bunny Goldstein's "May Fly"
  20. Replies
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    2,759

    Stinger gp / strangler tuner

    Does anyone have a tuner /pipe from a kr-15 engine that you could take a picture to post?

    Gathering parts for a v4 project & would like to start close to the kr-15 set-up.

    Any support would be...
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    10,434

    skipping

    Sounds like either water in your fuel or some trash in the carbs.

    Either way it's fuel related if the choke helps.
  22. Thread: 16 Allison

    by thornl01
    Replies
    6
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    5,005

    Got your insurance policy paid up ? boat has a...

    Got your insurance policy paid up ?

    boat has a lot of nose lift for a V6
  23. Replies
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    3,103

    check over in the 2010 More Smack thread, Att:...

    check over in the 2010 More Smack thread, Att: YAMAHAFASTCRAFT.
  24. Replies
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    3,849

    J/e crossflow v4 mods

    Would like to start a discussion on Mods for the V4 crossflow engines.

    Looking for a few more tricks to perform to an engine I am building.

    example:

    scollops in piston skirt & matching block...
  25. Thread: V4 OMC hot up

    by thornl01
    Replies
    2
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    3,323

    v4 omc

    The cross flow (super strangler / stinger gp, V4 racing pistons had a Scallop cut in the bottom of the piston on the intake side, w/ the block machined to match.

    Get in touch with Danny Pigott...
  26. Replies
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    828,299

    Fingerports

    YES

    Thanks

    LT
  27. Replies
    866
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    828,299

    Fingerport Pictures

    Yo Fast Fred !

    The post you had a while back on adding fingerports to a 49 er, wa supposed to have pictures but did not.

    What is the chance of getting these reposted.

    Please.

    LT
  28. Thread: std bore size

    by thornl01
    Replies
    2
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    2,666

    bore size

    3.1875 would be correct.

    LT
  29. Replies
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    RPM's

    Biggest issue w/ these motors has been to NOT 'LUG',

    ie... DO NOT OVER PROP !

    Let the motor breath.
  30. Replies
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    4,778

    Ratio

    stock ratio is 2.42, or 12/29.


    serial # says 1987

    I N T R O D U C E S

    1 2 3 4 5 6 7 8 9 0
  31. Replies
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    3,492

    Xr-14 ?

    With the current price of engines (v6''s) & fuel, Wouldn't it be feesable for Allison to return to the smaller boat market ?

    If you look on this site, S&F, and others, you always see folks looking...
  32. Thread: two barrels

    by thornl01
    Replies
    56
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    17,795

    new toy

    To my best knowledge, none of this series engines had fingerports. The 40/48/50/60 blocks were basically the same except for the later ones w/ the exhaust relief hole ( which you don't wont)
    There...
  33. Replies
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    19,445

    "the Ditch"

    Danny P

    Yes we have a pwrhead from your dad. He did it somewhere around 1978-1979..
    I worked for Ray Ellis in florence for quite a few years & we had some really good times traveling to...
  34. Thread: 45 ci MODS

    by thornl01
    Replies
    12
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    8,068

    Boat is currently upside down getting bottom...

    Boat is currently upside down getting bottom fixed. Also have deck separated from hull trying to loose some weight by replacing old waterlogged flotation . Boat had a 1/2" hook in and was as wavey...
  35. Thread: 45" rods

    by thornl01
    Replies
    2
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    2,287

    45" rods

    Thanks.

    Heavier & larger is not always best.
  36. Replies
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    NOA / SORA Races

    Amen to the good racing that was put on by NOA in the 70's & 80's.

    Being from South Carolina, and living 10 miles from "the Ditch", many good races & racers cut their teeth racing with the likes...
  37. Thread: 45" rods

    by thornl01
    Replies
    2
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    2,287

    45" rods

    Got a question here for any one who will answer this for me.
    See attached photo of two connecting rods. Both are for 45" OMC 2 cyl loopers. rod on left is from '77 55 hp rude, rod on right is from...
  38. Thread: 45" pistons

    by thornl01
    Replies
    2
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    2,350

    45" pistons

    Can anyone tell me the difference or advantages of these two pistons?

    One is a stock replacement (sierra) & other is from a 60 hp block.

    Thanks
  39. Replies
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    4,220

    spark plugs

    NGK replacement is B7HS10,

    Autolite # 2634.

    I quit w/champions many years ago also.
  40. Thread: Puzzled

    by thornl01
    Replies
    2
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    2,268

    Puzzled

    This was a mid 80's , '100' block, w/ 56" 3-cyl pistons in it,

    What goes ?
  41. Thread: Puzzled

    by thornl01
    Replies
    2
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    2,268

    Puzzled

    Just finished dissassembling a 45" powerhead assy I picked up from a local dealers bone yard. ( $10).

    noticed that powerhead had been into before so I expected the worst.

    Found 1 burnt piston,...
  42. Thread: 45 ci MODS

    by thornl01
    Replies
    12
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    8,068

    Misunderstood?

    Never said that I wanted the 45" to perform like a 49" triple. (got one of them that will honk!)
    Just want to improve the performance of the piece in hand.
    I know that porting only will not do the...
  43. Thread: 45 ci MODS

    by thornl01
    Replies
    12
    Views
    8,068

    more is always better

    Any improvement will be welcome. 5-10 would be great. Built quite a few 49" motors w/ decent success, & would like to apply the same basic mods to this 45" motor. Once a motorhead, always motorhead....
  44. Thread: 45 ci MODS

    by thornl01
    Replies
    12
    Views
    8,068

    Mod info

    Thanks for the reply.

    LT
  45. Thread: 45 ci MODS

    by thornl01
    Replies
    12
    Views
    8,068

    Scared ?

    Guess I'll make a reply to my own post reguarding the lack of reply from anyone out there.

    Seems that there is a lot of secrecy pertaining to any mods on the 45" motors.

    Guess that all these...
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    POOR MAN'S" SST 60 case!

    Att: Ron Hill.

    I need one of your nose cones for a nitro case.

    Building a river boat for my nephew to run here in South Carolina.

    Motor will be 45" w/ nitro case. nothing really fancy But...
  47. Thread: 45 ci MODS

    by thornl01
    Replies
    12
    Views
    8,068

    45 ci MODS

    Currently building a 45" (60hp) engine for a river boat for my nephew. Have been out of the loop for a few years so I am going to need & really appreciate some help. Have a '100' block, crank, etc,...
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