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-   -   Merc 420 to 525sc in a Formula 242. (https://www.offshoreonly.com/forums/general-q/332800-merc-420-525sc-formula-242-a.html)

79formula 03-15-2016 02:29 PM

Should be fun in my 242.

79formula 03-15-2016 06:23 PM

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 (Post 4416112)
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


79formula 04-07-2016 07:15 PM

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!!!

http://i880.photobucket.com/albums/a...46907571_n.jpghttp://i880.photobucket.com/albums/a...07138298_n.jpg

TomZ 04-08-2016 11:19 AM

Really nice looking set-up you've got there!! Can't wait to hear the results.

TZ

79formula 04-15-2016 03:21 PM

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.

TomZ 04-15-2016 03:33 PM


Originally Posted by 79formula (Post 4428854)
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?!

79formula 04-15-2016 03:36 PM

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 (Post 4428859)
That's moving!! How did she feel?!


TomZ 04-15-2016 03:44 PM

Very good to hear!

How much boost are you making?

79formula 04-15-2016 03:56 PM

Made 5lbs. I think having a tight gimbal helps.

mike tkach 04-15-2016 04:11 PM

79,it looks great.you did a top notch job!


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