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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


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Old 07-06-2006, 03:32 PM   #1
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I think NAPA might sell factory plugs. Other than that I don't know. You could always post in the want to buy section of the forum and see if someone that is doing an engine swap would get you the plug. I would also check and see if the SOHC plug is the same. You never know.
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Old 07-06-2006, 03:40 PM   #2
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I can almost bet right now that the reason you are running low power is because of your fuel pump. Your car is running rich and you have nothing to bring the fuel down. The coolant sensor wont cause the loss in power that you are currently experiencing. The mods that you have, there is no need to upgrade the fuel pump...AT ALL. This is the perfect case of "adding more mods = more power" nonsense. Anyhow, slap the stop fuel pump on and try to dyno again. With the KA24DE and your mods, you should see about 140whp. Its funny because the people who have been on the mustang dynos, then come here usually get lower numbers than the mustang dynos. I have never seen one read lower then our dynojet.

Look at your AFR chart. Its even rich for turbo application...it is totally robbing you of power on the NA motor. You should be around 14.0, 14.3 AFR. Youll see big gains over what you have now.
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Old 07-06-2006, 03:48 PM   #3
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Old 07-06-2006, 03:48 PM   #4
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14.0 to 1 your shitting me right? thats very lean n/a motors are lean at 13.5 at WOT during torque and hp peaks yes 111 rwhp is very low. most stock k24de put out 130 rwhp... how is your ignition timing, and ignition sytem?
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Old 07-06-2006, 03:55 PM   #5
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Quote:
Originally Posted by seanc
14.0 to 1 your shitting me right? thats very lean n/a motors are lean at 13.5 at WOT during torque and hp peaks yes 111 rwhp is very low. most stock k24de put out 130 rwhp... how is your ignition timing, and ignition sytem?
Alot of stock maps are already runnign 13.5 afr with out mods. I have seen 14-14.3 bone stock on the stock map. His car is too rich right now. Hes got MSD and a fuel pump too large for his set up. Generally on an NA car you want to get 12.0:1 richest and 13.2:1 the most lean at WOT. Turbo ap wants around 12.5:1 to richest 11.0:1
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