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82 Nautique 1 
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Joined: January-06-2007 Location: Rock Island, IL Status: Offline Points: 265 |
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 Posted: May-30-2007 at 1:20pm |
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DYNO'S
Just wondering if anybody has found a Dyno machine that will work on reverse rotation ?? My rebuilder said he could not Dyno my reverse. Dennis H. |
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JoeinNY
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Joined: October-19-2005 Location: United States Status: Offline Points: 5693 |
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Posted: May-30-2007 at 1:42pm |
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Common problem unfortuantely, mine is std rot so I am in the clear. I will talk to machine shop about the possibility of reverse, doesnt seem like it would be too hard depending on what the breaking mechanism was.
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Online Points: 21130 |
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Posted: June-09-2007 at 8:51pm |
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Looks like you guys were right. I downsized the jets and gained 200 RPM on top. Running with the motorbox off has no effect, so Im assuming that trick worked before to help lean me out a little.
I called Holley tech to try and get a good starting point. They told me that based on my list number, stock front jets were 65, and the rear plate would flow equivalent to a 66, which surprised me. Supposedly the carb is calibrated without the power valve, which accounts for the similar size front and rear. I chose to try 68 front and 70 rear (coming from 72/82). I didnt have time to plug check or do any further playing, but it looks like Im going in the right direction. Thanks to everyone for their input! |
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GottaSki
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Joined: April-21-2005 Location: NE CT Status: Offline Points: 3333 |
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Posted: June-09-2007 at 9:32pm |
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I smell BS, all four throttle bores are identical unlike a 4150G that has smaller secondary bores , on that carb the jets are all the same even without the secondary PV. But your carbs bores are all the same, if he explained how magically that extra gas got in there I'm all ears. I think you got some bad advise and at risk of being too lean on the secondaries.
Seems to be a pattern here Beware some quack at Holley, jeash, he's not going to be any help if you frag the engine. I don't understand the reluctance to do it right and do one side at a time; you seamed so cautious then wham, wassupwitdat? |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Online Points: 21130 |
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Posted: June-09-2007 at 10:03pm |
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Gottaski, perhaps youre right- I'll upsize the rear jets next time I run, just to be safe.
Unfortunately, Ive got a lot of projects going at once in order to be ready for Green Lake. The plan is to be in the water and doing the fine tuning before the 4th of July. Today I was preoccupied with my trailer (new lights, wiring and tires). The next few weeks will be spent prepping for the new interior (carpet, glasswork, etc). I havent put 15 hrs on the boat since buying it, so the problem isnt laziness, I assure you- its just a lack of time! I promise that I will be plug checking and dialing that sucker in as soon as I get the chance! For now, Im just happy that Im going in the right direction- so thanks for all your input. |
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M3Fan
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Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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Posted: June-10-2007 at 12:37am |
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11/2005: Joel: You know Tim, with how smoothly this boat runs, honestly, you could run it for a year and just have fun without doing a darn thing to it, then modify it. Tim: Oh, I fully plan on holding off on the mods and just having fun for at least a year. Yeah right! 
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
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81nautique
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Joined: September-03-2005 Location: Big Rock, Il Status: Offline Points: 5772 |
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Posted: June-10-2007 at 8:22am |
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refering back to that speed disease, I'm afraid it's taken a fatal hold of another one, he will be remembered well while he blasts around the lake at 57mph in inboard heaven at 103db.  He will have clear flat water in front and the bows of 3 DNR boston whalers with 40hp outboards in his rear view mirror. He will find peace atlast. Can I have an AMEN.
I'm laughing with you Tim not at you. Have a ball. |
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You can’t change the wind but you can adjust your sails
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Online Points: 21130 |
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Posted: June-10-2007 at 10:03am |
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Hmmm... seems you caught me. It all started with the DUI when the ignition module quit and its been all downhill since then. The lack of water time has not been due to the engine upgrades though- Ill blame last year's poor showing on the unexpected floor project and August business travel! Alan, I take comfort in the fact that Im not alone in my suffering- its good to have a support group here. 57mph sure sounds good to me- but I doubt the '90 will ever get there. The next one might though
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Nautique2001
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Joined: June-14-2004 Location: Massachusetts Status: Offline Points: 2832 |
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Posted: June-15-2007 at 1:48pm |
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Tim,
What happened to the blower solution that I suggested? Is that on the back burner? I think you'd push more RPM's with that little monkey. 
Ken |
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TRBenj wrote: