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ZX7 motor won't go from midrange to high end

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  #11  
Old 05-20-2013, 01:27 AM
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I emailed those guys and got a reply. This was concerning a vulcan. They do not use that part anymore basically and any other info was unobtainable. Long story short, I am not sure.

What is static timing show on this rotor? (does it show the proper 35 degrees that you mentioned and in which you verified with your timing wheel?). What are the running symptoms? just midrange power out with what weight of a rig? Trying to learn here, so please bear with my inexperienced questions.
 
  #12  
Old 05-20-2013, 02:44 AM
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Yep verified 35 set timing. Midrange to redline power. Its like its being starved of fuel. Sputtering in the straights and feels likes it hits a wall almost like its hitting rev limit but its not even close redline. The car is 930lbs with driver. Tried all kinds of main jets today and nothing seemed to help the problem.
 
  #13  
Old 05-21-2013, 01:02 AM
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Originally Posted by chipskey
Yep verified 35 set timing. Midrange to redline power. Its like its being starved of fuel. Sputtering in the straights and feels likes it hits a wall almost like its hitting rev limit but its not even close redline. The car is 930lbs with driver. Tried all kinds of main jets today and nothing seemed to help the problem.
It is electrical then. Alternator, ecu, battery or just the connections. When the superbike class ran after my class, they did not use alternators and relied on battery. If the battery was taking a dump, they could not power out of the 4000 plus rpm range either. Sounded just like a rev limiter as they tried powering out of T9
 
  #14  
Old 06-13-2013, 05:49 AM
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Well I have not performed with the mini's or whatever they are known as. Stars I think around here. My first believed was also of the asking for program and battery power with the cut out.
 
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