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Originally Posted by Whipple Charged
(Post 2912984)
Rev limit is 5400, peak power is 5600rpm if you raise rpm limit, motor has 28deg timing from 3600-5200 and 34 at 5400.
Dustin couldnt the motor take more timming? or have to run 92 etc? Rob |
I was told about the time advance between 5250 and 5400, I beleive my motors ran about 5300-5350 before redoing the top end. When I spoke to one of the guys helping me about the time advance said no. I have a rinda scan tool , looks like Ill be running the boat this week and I will find out exaclty were everything is. I f you have any other info let me know. What affects may there be from bumping up the rev limiter and I also was told a liitle time advance might not hurt, give your thoughts.
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griff was the boat built that way or did you change it.
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Originally Posted by scopam
(Post 2913422)
griff was the boat built that way or did you change it.
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Originally Posted by scopam
(Post 2911903)
griff I have a 32 AT 2002 , I pulled the motors and did the top end I beleive after doing everything that I am now down approx 150 rpm and 1-2 mph. Top ends have inconnell severe duty and manley valves, hi comp springs. Drives and props all the same, all the alignment is the same. We also put in new mounts to realign the motors the drives would not go back on also replaced one coupler. I thought it should run better, at a loss
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Originally Posted by diesel2fast4u
(Post 2953806)
they should time at 4000 rpm
Eddie |
Originally Posted by Young Performance
(Post 2953861)
That's not true. They need to be put in base timing mode and set at 8 deg. By putting them in base timing mode, you take the ecm out of the equation as far as timing is concerned. You can put it in base timing mode with a scan tool or by jumping out the A and B terminals of the data plug. You can use the jumper plug or do it with a piece of wire or a paperclip.
Eddie |
Originally Posted by Young Performance
(Post 2953861)
That's not true. They need to be put in base timing mode and set at 8 deg. By putting them in base timing mode, you take the ecm out of the equation as far as timing is concerned. You can put it in base timing mode with a scan tool or by jumping out the A and B terminals of the data plug. You can use the jumper plug or do it with a piece of wire or a paperclip.
Eddie |
to get this correct put the motor in base timing mode, run it to 4000 rpm and set the timing on 4000rpm. I watched them set the timing on the motor and it was not done that way. If you have a set procedure please explain, also I have a rinda scan tool available to me what can I check for to make sure it is done properly.
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Originally Posted by diesel2fast4u
(Post 2954128)
that's not thrue, you put them in timing mode (we use the dtt or newer laptop) and you time them on 4000, like a carb engine, that way you are 100% you have the complete timing degrees available, had the exact problem before, was a mercruiser factory tech who told me and turned out just fine
so what was your total timming at 4000? |
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