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Merc 420 to 525sc in a Formula 242.

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Merc 420 to 525sc in a Formula 242.

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Old 03-15-2016 | 02:29 PM
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Should be fun in my 242.
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Old 03-15-2016 | 06:23 PM
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What should my timing curve look like? We did not dyno with my dizzy. I was planning on dropping mine in, setting total timing to 34*. I was gonna draw a graph of the timing curve and compare it to the 525sc curve.
Originally Posted by MILD THUNDER
Close to what i was figuring. There may have been a little more torque on the table with a good timing curve.

Thats good numbers for what you have there
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Old 04-07-2016 | 07:15 PM
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The motor is in. I started it for a few seconds and killed it. I didn't have water hooked up, my garden hose was frozen. Since these pics i have cleaned up my wiring and hoses. All i have to do is dunk it in the water, set the timing, and go! Cant wait!!!

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Old 04-08-2016 | 11:19 AM
  #104  
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Really nice looking set-up you've got there!! Can't wait to hear the results.

TZ
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Old 04-15-2016 | 03:21 PM
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First round of results are in. Full tank of fuel, not fully trimmed out, and tab not all the way up. I brought it up to about 5000rpm, saw 70 on the GPS, and backed off. I think leaving it open and trimming out properly, and pulling my tabs all the way up will get me 75.
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Old 04-15-2016 | 03:33 PM
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Originally Posted by 79formula
First round of results are in. Full tank of fuel, not fully trimmed out, and tab not all the way up. I brought it up to about 5000rpm, saw 70 on the GPS, and backed off. I think leaving it open and trimming out properly, and pulling my tabs all the way up will get me 75.
That's moving!! How did she feel?!
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Old 04-15-2016 | 03:36 PM
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Actually it felt glued to the water. I really think if I get the hull loose Ed up with trim, it will really pick up speed.
Originally Posted by TomZ
That's moving!! How did she feel?!
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Old 04-15-2016 | 03:44 PM
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Very good to hear!

How much boost are you making?
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Old 04-15-2016 | 03:56 PM
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Made 5lbs. I think having a tight gimbal helps.
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Old 04-15-2016 | 04:11 PM
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79,it looks great.you did a top notch job!
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