Chemicalblue Posted June 5, 2007 Share Posted June 5, 2007 It fired today for the first time in 6 mo. Good times! So saying that i need to put this question out there. Is a 20amp fuse enough to run 6 LS1 coil packs? The engine will fire for about 20 sec. and then it blows. I don think its a short because it takes a bit to blow. Anyone have any thoughts? Quote Link to comment Share on other sites More sharing options...
Chemicalblue Posted June 9, 2007 Author Share Posted June 9, 2007 Well now the coil issue is resolved 20a fuse for 6 ls1 coils pulling 5a a piece = does not work. hehe So now the issue is proper set up in the ECU Im using a 300zx(z31) trigger wheel in a l28et dizzy. Ive gone through many diffrent settings but nothing seems to work to actually get the thing fired up. Just some rather large Fireballs At the moment the settings are Cylinder 1 angle btdc 0 Cylinder 2 angle btdc 480 Cylinder 3 angle btdc 240 Cylinder 4 angle btdc 600 Cylinder 5 angle btdc 120 Cylinder 6 angle btdc 360 Firing order 153624 Trigger sensor type: hall effect Home Sensor type: hall effect Trigger signal edge: rising Home signal edge: rising Trigger signal pull up: on Type of trigger system: Nissan type 1 Spark mode: Direct Fire lock timing btdc: 20 deg Trigger angle btdc: 70 deg Tooth offset: 1 Nissan Home window: 9 Ignition spark edge: rising Dwell mode: constant charge Constant charge time: 4ms Spark break time: 600 us So Ive checked the dizzy shaft several times and its right. But still It wont fire correctly, the spark is very erratic. Im getting a RPM and good Home/Trigger signals. Anyone got any ideas? Quote Link to comment Share on other sites More sharing options...
big-phil Posted June 9, 2007 Share Posted June 9, 2007 I hope you get it figured out. My old motor is out- and the new one is almost in! after you figure it out, you'll be like "that was so simple":burnout: Quote Link to comment Share on other sites More sharing options...
Chemicalblue Posted June 10, 2007 Author Share Posted June 10, 2007 Man I hope so, at this point Im starting to think the car might be setting there for a long time. Not to mention the frustration. Quote Link to comment Share on other sites More sharing options...
Ivan280zt Posted June 11, 2007 Share Posted June 11, 2007 Dont know if this will help but my trigger angle btdc is set to 36 I belive anything lower or higher than that number I would have issues with timing. Ivo Quote Link to comment Share on other sites More sharing options...
Chemicalblue Posted June 11, 2007 Author Share Posted June 11, 2007 Tnx man, I will give that a try. Does anyone else see anything wrong with the set up? Quote Link to comment Share on other sites More sharing options...
Administrators RTz Posted June 13, 2007 Administrators Share Posted June 13, 2007 Well now the coil issue is resolved20a fuse for 6 ls1 coils pulling 5a a piece = does not work. hehe. At 4ms dwell, sequentially triggered coils will only charge individually to 5000rpm. Beyond that, two channels will charge simultaneously. To complicate matters, it won't 'double' as the initial charge current is far greater than at the end of the charge. Moving on... at 5ms, 4000rpm is max. before charging two channels. LS1 coils are going to want around 5ms charge time at torque peak. ... and obviosuly wasted spark would double the amperage.. Yup, but only double below 5000 at 4ms, double below 4000 at 5ms. Dont know if this will help but my trigger angle btdc is set to 36 I belive anything lower or higher than that number I would have issues with timing. I'm not 'Haltech savvy' so I could easily be mistaken, but this doesn't sound right to me. If that parameter is referencing the mechanical lead before number one TDC, then 36 degrees isn't enough. ECU can't 'go back in time'... there must be as much mechanical lead as the max. timing you run. I run more than 36. Tommy, if you are having doubt's about your mechanical lead, this implies that you haven't verified that timing is 'as requested'. This will get you into a heap of trouble. You MUST verify ignition timing... after that verify it again ... then verify that cyl. 6 is firing at the same deg. as number one. P.S. Where is your dealer? Is he not helping you sort this? Quote Link to comment Share on other sites More sharing options...
Chemicalblue Posted June 21, 2007 Author Share Posted June 21, 2007 Thanks so much Ron! I got it running with the varification of the 1 and 6 cylinder timing trick. I found out alot of info on how to set the trigger wheel up and the home window size was very critical. Now Im off to start looking at how to add fuel tables and what that whole thing is about. Its so funny I ended up with one of the nicest ecu set ups on the market (e11 and lc1) and I have no clue what im doing. Should be fun! Tnx again Ron Tommy Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.