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


 
 
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Old 10-31-2013, 08:14 PM   #1
JesterX18
 
Join Date: Feb 2013
Location: Clifton Park, NY
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Cas timing issues on a freshly swapped sr20.

Hi guys I recently got my sr20 finally running after many years of rebuilding it. I've already driven it and it's pulls strong, but idles rough and at time stalls. So i decided to set the spark timing or at least i tried too. My problem is I've heard of two methods that work for locking the timing... One is warm engine, unplug tps, and blip throttle over 3 grand three times to lock timing. Only problem is your idle is supposed to be below 1000 and mines 1100... No matter what I do... Anyway the second method is similar and read from codyace. Warm engine, unplug tpms, and rev engine and as Rpms fall they will settle at 15 degrees btdc and therefore setting your timing at 0'degrees gives you the proper timing. My timing light is a non advancing old school one and my signal was taken right of the ting loop on the back of the ignition harness. I tried both methods and the problem I'm having is that my timing light is showing the marks about an inch or so to the left and when I even begin to adjust them into the first few marks on the right it acts like its gonna stall and runs rough as hell.... Now I've searched and searched and found many people with similar issue but nobody has an answer... The only ideas I had about why they are so far away is my chain timing or cas placement. But I've triple checked them and they look good. See pics below to verify chain timing... Any solutions would be greatly appreciated as I've been dying to get this thing on the roadImageUploadedByTapatalk1383271756.752750.jpgImageUploadedByTapatalk1383271767.602367.jpg


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