Offshoreonly.com - Blower Motor Set up and Tune 257 Mirage

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- - Blower Motor Set up and Tune 257 Mirage (https://www.offshoreonly.com/forums/general-q/304146-blower-motor-set-up-tune-257-mirage.html)

WCAC	10-14-2013 08:24 PM

Quote:

Originally Posted by Rookie (Post 4011939)

I was actually wondering if the distributor needed to be phased similar to when you use the Merc hall effect distributor.
Have a friend that could not get engines to run with his HI-6M's. (similar to Daytona's) Exact same symptoms you are encountering. He did not have the rotors phased
to run with the ignition boxes. Just like the rotors that Daytona Sensors sells to hook up the CD-1 to a Merc distributor.
Part # 103004 Marine Rotor (required for correct phasing of CD-1 Marine applications using Mercury Marine Hall effect distributor). $24.50
http://www.daytona-sensors.com/CD1.html

Glad you're dumping their product if that is the way they treated to you.

Yea, we just ran to CP Perfornance and they swapped everything out no questions asked. They are such a great company (CP) and i know they own Hardin Marine so i am going to run thier whole system.

WCAC	10-14-2013 08:26 PM

Quote:

Originally Posted by lil red (Post 4011912)

10-12* max advance curve total 32-34 all in before 3,000 and yes just pull a lower bowl screw out to drain the bowls.

So when you say max advance of 10-12 if im reading you right my initial timing should be between 22-26? Or are you saying initial should be 10-12 and total 32-34 before 3k?

I just want to make I'm reading you right.

Unlimited jd

10-14-2013 08:32 PM

20 - 22 initial and 10-12* mechanical advance. Total being 32-34* depending on your plug heat range, fuel, and of course how the plugs look after a wot run.

WCAC	10-18-2013 10:48 PM

****Update****

Things i have done

Changed out Datona Box for hardin Max Volt
Changed Hardin Marine dustributor twice (both units i recieved from them were junk) for MSD Marine
Jetted carbs
Locked out distributor advace
Set time to 32*

Boat is running good now. 79 GPS at 4900 rpm. Time to reprop. Im running a 28p. Any suggestions?

Borgie

10-18-2013 11:42 PM

Quote:

Originally Posted by WCAC (Post 4013974)

Go to NWoffshore.com and find a member there (Thunderballs) he has one of the fastest mirage 257's around and has done extensive work and research regarding the 257 specifically. It's not a hull designed to go 90(he had to mod his hull for added power). Great guy and very knowledgable on the Mirage line. Great boats but like I mentioned its tough to get them above 80. Good luck with your project.

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