wheres the update hows it going?

Sorry I have been busy, the motor runs good in the mid range 3000-5000, but is having issues over 5000 or so, and the hole shot. On the dyno it was fine, the only thing I did not use off the dyno was my ign box, its a MSD 6al. I wonder if its weak or just not up to the task. The 6al has the weakest output of all the boxs @ 105mj, I ordered a MSD 7 plus digital and HVC II coil. The 7 plus has 190mj almost twice the spark output of my 6al. Guess I will know tomorow when the MSD stuff comes in, I hope to find the time to install and test it. Didnt mean to leave everyone out of the loop, I just didnt have anything good to report.

anything new ?

More testing today, we made a 1/2 spacer so I could test a wider range of props. we had to do some custom work on the coupler between the SCX and SC, IMCO does not make any spacers beside the stock one for that combination. so we had to make one. and modify the 1/2" spacer plate to work with the -3 lower. Its always something..
I have a long story to write on how good the soft touch rev control works on the MSD digital 7 plus... But am too tired now. You can guess....
Good news is the boat house is almost done, I have a 14' row boat in it, no motor. I just get in and paddle, pretty simple. Push the remote and it goes up and down, maybe I will put a big screen in the gable end and a sound system. A few recliners in the rowboat and I will be all set. O and a tap system with lines that come down from the roof so I dont have to get out of my seat. Maybe watch Pegged (a great vid on poker runs) and pretend I have a 175mph Skater or something. occasionally grab the oars and pretend I just passed that Skater... O man I need some sleep.. Its been a long day.
Good night

I have been running the same 02 since 2002. I check it time from time to make sure it is still working but so far so good. I have set up where O2 can only lean out 5% but can richen up 25%.

When I did my setup the M5 was not out yet. Looks like I was lucky it was not out since I did not have near the problems you had with belts and mount for M5. Of course I only run 10lbs. The main mistake I made is I went with the procharger 2-4 setup. I spent a year fighting the carbs. Once I went the Fast efi life was was easier. I spent a year running logs and fine tuning.

I also when from the Procharger intercooler to the Rtech intercooler. In running a log before and after my air temp when down 15 degrees & used 15% more fuel to keep my A/F ratio correct. Do not know how much HP that added.

Only problem I have is I can not get the IAC to act fast enough at idle between in gear and out to my liking. I hear the new 1075 mercury's go between in gear and out so smooth.

Just read a thread on another site about this issue. Can't seem to find it now, but Eddie Young of Youngs Performance addresses this issue by using two IACs. He said he could never get one IAC to operate fast enough on his big HP engines to make in/out gear transitions.

Might give him a call, or search around for that solution.

Edit: found it - bttom of page 2 & top of page 3. Not a lot of detail, but it's an idea.
http://forums.boatfreaks.org/showthr...+covers&page=2

I run a pair of IAC's in parallel on my roots blower. twin throttle body efi set up. Stalling is extremely, extremely rare.

What you need to do is take out a lot of timing @ idle in neutral, and adj the throttle plate to get the desired idle with a little IAC. then add some fuel and spark when going into gear, Use timing to make the jump into gear with as little IAC as you can you will need some but will find using the timing you will not have to depend as much on IAC. Then you will not get the rpm flash going back into neutral. And not have to use a lot of IAC.Timing is instant there is no IAC lag both going into and coming out of gear.
It took some work to figure it out but Jason dialed it in it idles perfect 850 in and out of gear and no rpm flash going back into neutral. It was less than desirable before.

What is your target AF ratio @ WOT? And cruise? We are using 12.8 or so @ cruise anything leaner and it will occasionally lean miss i was hoping to clean it up some @ cruise, and 12.3 or so @ WOT.
I just got my AF meter from Accel, they were on back order for months, I finally couldnt wait and got one from Amazon and it just got here and only $370. I couldnt believe it. I need to open the box, but its got the part number on the box i hope its all there

Sorry to Highjack your thread on my IAC but thanks for the advice. I will study this tonight and try this tommorrow. Motor never stalled, just the very high idle for time after going into neutral.

When I first programed this I got a file from another OSO member that I used as my starting point. It has 11.5 at big end, 13.7-13.3 cruse 3300rpm (around 55+) idle 14.2

I think the 11.5 is a little too rich. Motor has lasted 8 years so I am afraid to mess with it. I know I am on the rich side since after a blast there will be a little soot on the transom. O2 is on the even side of motor and my odd side was leaner when I had checked both sides at one time when I was setting motor up.