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E-Force low RPM loading issue - help

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Old Nov 26, 2012 | 03:45 PM
  #41  
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Originally Posted by realcanuk
Glad you found the problem. Motorhead 47 defiinitly knows his stuff. Enjoy !!

On a side note I have had my eforce off at least 5 times. I always lube the surfaces and slide it a bit if needed. You did the right thing, but I guess a bit of bad luck. !!!
You know it actually wasn't that hard to remove but I wouldn't want to do it five times. Have you had problems or was it non related?
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Old Nov 26, 2012 | 07:45 PM
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Originally Posted by Red Sleeper
Since this is Edelbrock's tune I don't know. I have a feeling it will be very fat at WOT when everything is running right being a conservative tune but for just normal cruising I believe 14.7/1 for economy and emissions.
In closed loop the car is calibrated to maintain stoichometric / 14.7 to 1. When in PE (power enrichment) mode the Edelbrock tune is targeted for 11.0 to 1 AFR above 2500rpm. That is rich but not what I would call "very fat". I wouldn't lean it out more than 0.5-0.7 from the 11.0.
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Old Nov 26, 2012 | 08:30 PM
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Originally Posted by Motorhead-47
In closed loop the car is calibrated to maintain stoichometric / 14.7 to 1. When in PE (power enrichment) mode the Edelbrock tune is targeted for 11.0 to 1 AFR above 2500rpm. That is rich but not what I would call "very fat". I wouldn't lean it out more than 0.5-0.7 from the 11.0.
It will be a while before I'm comfortable playing around with the tune. I have been lookig over HP Tuners and it is nothing like TunerCat which unfortunately spoiled me. Not that it's better it just that C4's are less complicated. Example is "SPARK" on the C4 there is just a couple of charts but for the C6 there are a dozen categories with several parameters in each category. Lots to learn. If I had to lean it out under WOT I would look for the power enrichment table. It maybe there or its equivalent but I haven't found it yet. I would love to have HP's "How to Tune" tutorial but it's way tooo expensive for my blood. You would be spending nearly $1000 for HP tuners and the tutorial.
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Old Nov 26, 2012 | 08:50 PM
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Select "Engine", then "Fuel" tab, then "Power Enrich" tab and then select the "EQ Ratio vs RPM" button. That brings up a chart. Target AFR is determined by dividing the value in each cell by stoich of 14.7....piece o' cake!
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Old Nov 26, 2012 | 09:06 PM
  #45  
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Originally Posted by Red Sleeper
Its FIXED. Appearently it was the rolled O-rings. Six out of eight of them were rolled. I would have bet the bank that they were ok but they must have been leaking. When I sat the blower the first time I had to slide it into place only about a 1/4 inch but enough to roll the O-rings. I expected to have to slide it a little so I lubed the surfaces so they could slide. I suspect they hooked the side of the port as only one side of the O-rings were twisted. One interesting thing is that it ran fairly good but just not exactly right. I could see how some people with these blowers installed could have one or two O-rings leaking and just not realize it or are tolorating it.

Now I would like to say something important. I want to thank everybody that tried to help me get to the bottom of this. There is one person that I peticularly want to thank and that is Motorhead 47. When he says something by god you had better listen. His common sense and logic got me to pull that blower back off and find the problem. Friend, if we ever meet I'm taking you out for dinner plain and simple!

So thanks again and BTW, that Vette pulls hard and this Edelbrock Supercharger is going to a blast to drive!!!
Also keep in mind that you were re-using 6-7 year old manifold gaskets! They have probably lost some of their "pliability" given their age and number of heat cycles they've been through. IF you ever take it apart again, I'd replace them with new/fresh ones.
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Old Nov 26, 2012 | 09:14 PM
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Originally Posted by Motorhead-47
Also keep in mind that you were re-using 6-7 year old manifold gaskets! They have probably lost some of their "pliability" given their age and number of heat cycles they've been through. IF you ever take it apart again, I'd replace them with new/fresh ones.
I can't help wondering why they didn't provide a new set of O-rings in the kit. Also, I wonder if there is any kind of O-ring dressing like permatex or something. I know you wouldn't want to glue the blower to the heads but I would like a little more sealing insurance.
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