Strictly Attitude
solid fixture here in the forum
OK so all the regulars who have kept up with my build or helped me out (Big Thanks). I am searching my options for coils to use in a coil per cylinder setup. I have acquired an expensive EFI ECU that has coil drivers built in that is run off a 60-2 trigger wheel and a cam sensor similar to how the LS engine gets it's info. Now I am looking for donor coils that won't break the bank. Ok so for starters I have contacted a few companies and started asking a few questions. I am not expecting the best answers here as they sell coils that are way beyond my needs as of right now. I need coils to get the project going and I don’t really want to spend $360 on coils designed to spark under 36psi boost conditions. Would it be nice yes but is it necessary for my build right now nope. A good set of donor coils for $100 or less is more where I want to be right now. Then down the road I can replace them one at a time if I want or when I add boost or nitrous.
My ECU is designed with 8 IGBT/8TTL or mixed according to the manual which means I’m confused what will work. This is where Grumpy drops 10 links and a load of info on me :shock: . I think I will help to simplify this also and put what info I have down to share also.
Let’s start with definitions
IGBT - The insulated-gate bipolar transistor (IGBT) is a three-terminal power semiconductor device primarily used as an electronic switch which, as it was developed, came to combine high efficiency and fast switching.
http://en.wikipedia.org/wiki/Insulated- ... transistor
Article based on automotive ignition using IGBT
http://www.st.com/web/en/resource/techn ... 003911.pdf
TTL - Transistor–transistor logic (TTL) is a class of digital circuits built from bipolar junction transistors (BJT) and resistors. It is called transistor–transistor logic because both the logic gating function and the amplifying function are performed by transistors (contrast with RTL and DTL).
http://en.wikipedia.org/wiki/Transistor ... stor_logic
I have looked on line to find more info but it there seems to be more forum info that really does not answer my questions or give me the information I want or am looking for. So hopefully this thread will narrow it down I have some assumptions I have made on these coils such as TTL coils are driver built in coils such as LS coils which I hear are a good coil even though from my talks with lance I do not need a coil with a built in driver as my ECU has drivers built in. Ok but if it is going to be cheap good coil why would I not run them? There is also CDI which is Captive Discharge Ignition such as MSD thrown into the mix also to make things a little more confusing. I would like to make a list and post it of IGBT coils donor and aftermarket to use best to worst well as best I can with the info available. Then a list of TTL coils donor and aftermarket again best to worst. And of course CDI coils. Now to make things complicated on this subject we have waste spark strategies thrown into the mix where you fire more than on plug at once allows use of less coils (cheaper alternative). That could be another list or add on for these lists.
My ECU is designed with 8 IGBT/8TTL or mixed according to the manual which means I’m confused what will work. This is where Grumpy drops 10 links and a load of info on me :shock: . I think I will help to simplify this also and put what info I have down to share also.
Let’s start with definitions
IGBT - The insulated-gate bipolar transistor (IGBT) is a three-terminal power semiconductor device primarily used as an electronic switch which, as it was developed, came to combine high efficiency and fast switching.
http://en.wikipedia.org/wiki/Insulated- ... transistor
Article based on automotive ignition using IGBT
http://www.st.com/web/en/resource/techn ... 003911.pdf
TTL - Transistor–transistor logic (TTL) is a class of digital circuits built from bipolar junction transistors (BJT) and resistors. It is called transistor–transistor logic because both the logic gating function and the amplifying function are performed by transistors (contrast with RTL and DTL).
http://en.wikipedia.org/wiki/Transistor ... stor_logic
I have looked on line to find more info but it there seems to be more forum info that really does not answer my questions or give me the information I want or am looking for. So hopefully this thread will narrow it down I have some assumptions I have made on these coils such as TTL coils are driver built in coils such as LS coils which I hear are a good coil even though from my talks with lance I do not need a coil with a built in driver as my ECU has drivers built in. Ok but if it is going to be cheap good coil why would I not run them? There is also CDI which is Captive Discharge Ignition such as MSD thrown into the mix also to make things a little more confusing. I would like to make a list and post it of IGBT coils donor and aftermarket to use best to worst well as best I can with the info available. Then a list of TTL coils donor and aftermarket again best to worst. And of course CDI coils. Now to make things complicated on this subject we have waste spark strategies thrown into the mix where you fire more than on plug at once allows use of less coils (cheaper alternative). That could be another list or add on for these lists.