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  1. Replies
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    Not quite same design as KC15A... different idle...

    Not quite same design as KC15A... different idle tube. KC16 tube is longer than KC15 tube. And, the KC16 tube is unique to that model.

    Most had sloppy assembly and misalignment, as you are...
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    Jim, beautiful D Hydro... drop me a note to...

    Jim, beautiful D Hydro... drop me a note to tridentracing@new.rr.com for some info on the care and feeding of a 55H.

    Nice to see this one in running condition.

    I have built and raced a lot of...
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    28,352

    And that would be Mark Lister? I was there,...

    And that would be Mark Lister? I was there, remember it well.

    Agree on high cockpit sides...

    And who begged for you to build a hydro with higher sides?

    I could not have driven my D/E boat...
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    Sam is right about the 45SS would have liked a...

    Sam is right about the 45SS would have liked a wider bottom boat. Mine was 36", and with my weight, plus a, what?, 130# motor with a lot of weight up high, if I went in too hard, the boat would start...
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    You would have loved a B&H... And I got Sam...

    You would have loved a B&H...

    And I got Sam to build all my boats with an extra deep cockpit, as I felt insecure in my previous A&H boats. Too easy to fall out, and I did once and didn't enjoy...
  6. Replies
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    To Sam's point about the EMH was faster, it was,...

    To Sam's point about the EMH was faster, it was, as it was a couple MPH faster on top speed with my longest course set up (used for the UIM record at Yelm) and the EMH could be run into the turn...
  7. Replies
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    And the key to the C Mod was Sam, as driver, and...

    And the key to the C Mod was Sam, as driver, and his awesome boat, C-Monster. He and John Puestow had some excellent C props that brought my C Mod 30H to life. I was too big for C, to run it myself....
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    Dyno HP on a 44XS is published on the Dyno test...

    Dyno HP on a 44XS is published on the Dyno test report done by my brother, Mike, on the Tohatsu and Merc 44XS comparison. Its online...

    I never dyno tested my 45SS... I sold it when they changed...
  9. Replies
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    43,367

    That was me running the 45SSH. I won the Stock...

    That was me running the 45SSH. I won the Stock Nationals, all of OMC's big prize money races (Nationals, Ocoee, Dayton) and won the Mod Nationals in FEH on the 1 2/3 mi. at Decatur (and set an APBA...
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    Umm, not quite. 44XS was introduced for the 1987...

    Umm, not quite. 44XS was introduced for the 1987 season. We ran the Mk55's with the new graphics for the 1986 Merc Challenge, as 44XS was not out yet. 45SS was introduced for 1986. 45SSH Nationals at...
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    Thank you for the kind words. Long since...

    Thank you for the kind words.

    Long since retired as a driver, more recently retired from building motors. It was fun while it lasted, but age and infirmity is sneaking up on me!

    I still try to...
  12. Replies
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    61,932

    Here is a document I wrote up for the 4 cyl....

    Here is a document I wrote up for the 4 cyl. Mercs, but this info applies to your question as well. Hope it helps. Copied in below:

    Crankcase Sealer… if some is good, more is better, then way too...
  13. Replies
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    15,204

    Harry had an answer. Maybe right, maybe not, but...

    Harry had an answer. Maybe right, maybe not, but the beauty of Mod is there can be more than one right answer. On this point, I disagree with him.

    But also realize that's a theoretical rule of...
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    15,204

    And I've been resisting the urge to start a...

    And I've been resisting the urge to start a urinating contest. As for a gap, you won't see one... but you will create areas of differing surface pressure on the bore.

    See below:

    Ring Gaps:...
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    15,204

    Fastjeff57, please drop me a note to...

    Fastjeff57, please drop me a note to tridentracing@new.rr.com

    I have some experience with Merc triples and Merc rings.

    I have a short document I'd like to send you...

    Jerry
  16. Thread: jim ruck

    by Trident
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    8,301

    Jim Ruck's phone number is 920-233-3833... No Web...

    Jim Ruck's phone number is 920-233-3833... No Web Site, no e-mail and he doesn't have time to watch these sites. He's busier than a one armed paper hanger in a windstorm.

    Call him.
  17. Thread: 40H carbs?

    by Trident
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    16,459

    Oops.

    Apparently I need to put my glasses on typing this stuff. Sorry about the typos.

    Getting old IS great, It beats the alternative. And, you can get away with stuff...

    Jerry
  18. Thread: 40H carbs?

    by Trident
    Replies
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    16,459

    40H AJ Carbs

    Should have no holes and should have full butterflies. Contact Aeroliner for butterflies and be carful to align with the beveled edges contacting the venturi wall correctly. LocTite 271 on the...
  19. Replies
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    33,019

    Merc 3

    So, you never saw one of their Mod 50 / F3 loopers?

    I think there were only a handful ever built, none sold as customer motors, and I'm guessing it had no real application as a service motor for...
  20. Replies
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    1 / 2 Six

    See post #11

    They look just like a full V-6 with a flat aluminum plate in place of Stb. cylinder head. No plugs, coils or plug wires on those 3, of course.
  21. Replies
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    1 / 2 Six

    No idea on driveshafts for inlines.

    Anyone?

    Everything I ran, SST 90, SST 120, SST 140 was on the SSM6. The 90 used a stub M/F spline adapter. The 1 / 2 six was a 2.4, same spline as the race...
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    1 / 2 Six

    Surprisingly, to me at least, is you do nothing to balance except remove three rod / piston assys. They run nicely on the remaining three. No nasty vibration.

    As for sealing, that's what the PVC...
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    1 / 2 Six

    Most do use the 12" racing tower, any one of several versions, as the powerhead, V-6 cowls and SSM 6 gearcase bolt right up.

    I have seen a few with the earlier die cast gearcase, not sure of the...
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    1 / 2 Six

    Don't have pix.

    Anyone?

    Externally, they don't look much different... just a 2.4 or whatever, with an aluminum plate in place of the Stb. cyl. head to save weight and hold the water in, and...
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    Oiling

    Good point about the oiler hose. #6 has a seal ring on each side on the crank, but apparently enough oil leaks by to oil the bottom bearing and to be pumped via a check valve to the top bearing....
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    Elephants

    Its a well known fact that elephants can hide in strawberry patches, but only when wearing red shoes.
  27. Replies
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    33,019

    Half Six

    Lurk? Pretty hard for me to lurk...

    Reverse rotation, as in running on an SSM 6 unit on a tunnel, the preferred bank is the Port side, 2, 4, 6. Whether that changes to the other side with standard...
  28. Australian Outboard Racers

    In the late 1950's, into the '60's... two that I knew were Jack Marshall and his wife, Diane.
    They'd come to the US and he'd race with us in Wisconsin, then return to Sydney in the fall.

    Jack was...
  29. Replies
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    Kill Switch

    I'm not looking at a motor (don't have one of these), but the info provided came from 1973 Merc 200 service info...

    Short answer, yes. Salmon to ground is ignition kill.

    To be sure, check the...
  30. Replies
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    1973 Merc 200 CDI

    2 wire (normally open) circuit for ignition kill.

    Connect (close) Salmon colored lead from switchbox through kill switch to ground (engine block) to kill.

    Many later Mercs have a terminal on...
  31. Replies
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    20H Carb

    I'd agree with Sam that some had great success with the Carter N, even after the introduction of the KA7A. The key was to have a good Carter (and many were not) and to use the fuel conversion kit...
  32. Replies
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    Mercury Classic 50

    But to consistently run lots higher RPM, like a 44XS, the motors are NOT bone stock. They have plastic reeds and are generally set up looser than stock (all mine are, including the one I run on a...
  33. Replies
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    20H Conversion Kit

    Yup, white (ish) fuel lines...

    Many 20H's, after being converted and making more power, would break the crankshaft soon after. The crank would break right above the top counterweight, below the...
  34. Replies
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    15H Conversion?

    I'm guessing E. C. would have put the Murdock St. Muffler on the Mk 15 and we'd have the 'Annoying A's' to go with the 'Buzzing B's'... Yes, I know, Willard would have called them 'Awesome A's'.
    ...
  35. Replies
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    20H Conversion

    Jon Walters has a photo of the 1959 Neosho, WI BU race... that was the first time the 20H's with the conversion kits were raced. Jon won that race on a wide Sid copy, a Broas Craft. If memory serves,...
  36. Replies
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    Should also have mentioned, there is no big hurry...

    Should also have mentioned, there is no big hurry to bolt it together and torque it immediately. Take your time, do it right, carefully, get your bearing caps lined up, etc, and bolt 'er up. No...
  37. Replies
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    LocTite 518: OK, here's my method... first, I ...

    LocTite 518: OK, here's my method... first, I clean the surfaces with a good solvent like acetone, or if there was old sealer, use Zip Strip, then acetone. Next, in a class where its permitted, I'd...
  38. Replies
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    Case Sealant

    LocTite 518.

    Do not put it on too thickly. Just a light pinkish coating on a clean surface, any ooze on torquing the cover halves indicates it was too thick. What we're trying to achieve here is...
  39. Thread: Sst 90

    by Trident
    Replies
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    9,714

    Sst-90

    Yup, I still have a few odd parts, plus two complete powerheads, reverse rotation flywheels, starters and all. Also have one powerhead to driveshaft housing adapter plate.

    Sam remembers these...
  40. Replies
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    Merc Block Boring & Honing

    Jim Ruck, Oshkosh, WI, does all of mine. 920-233-3833.

    Jerry
  41. Replies
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    44XS Crank

    Hi, Alan. Yup, all 44XS cranks have larger yet journals, approx. .883" (its stated as a range to the tenth on the print, not a nominal dimension with a tolerance), have a longer top 'shank' above the...
  42. Replies
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    6,376

    Mk 40 Crank

    Mk40 is different from the KG9 in that the KG9 had a train of gears for the mag drive and a cam for a mechanical fuel pump. Mk40 was the first belt drive magneto and was equipped with a check valve...
  43. Replies
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    30-40 and 44 Merc Crankshafts

    OK, here's the basics that I'm aware of...

    Difference between 30 and 40/44 cranks is just driveshaft spline.

    From there, there are two basic sizes to the rod journals. Early are .880" OD, later...
  44. Replies
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    Darn, I thought I answered Inline Six's question...

    Darn, I thought I answered Inline Six's question about KA11 & 12.

    Calm down, Ron... no need to get sarcastic.

    What do old people smell like? Depends...

    Same answer on suitable D Mod carbs....
  45. Replies
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    KA carbs

    KA-11 was used on 1961 Merc 800, KA-12 was used on 1961-62 Merc 700.

    Yes, KA-7's had elongated mounting holes to fit the Carter stud pattern.

    They were also the only production KA supplied OEM...
  46. Replies
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    Sticky: Switzer Wings

    They ran two up in some early Marathons, like the 1961 Winnebagoland. That was the last year for that race and they ran Stock Utlilities on the usual course, and ran OPC (Outboard Pleasure Craft,...
  47. Thread: C mod Merc?

    by Trident
    Replies
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    2,368

    C Mod Merc Carbs

    Mark 30's came with AJ-49 or AJ-51... the larger carb some used is the
    KB-2A.

    They're like a scaled down KA series and are tunable in ways the AJ's aren't, as you can readily remove the main...
  48. Replies
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    3,540

    OMC Gearcase

    HD / Commercial version of the motor, for work boats, etc. Idea was to better protect prop.
  49. Early Merc 44 Top Bearing Caps, Slots, No Slots

    Don't read too much into the two design versions... the 'slotted' caps are just an earlier version, used on the Mk 30's and Mk 55's. They interchange with the later (I'm guessing 1958 or so... I know...
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