Alternative Coil Option

[Cartman]

Hey all well basically i've got ahold of some LSx based coils and i'm goin to be swapping out my splitfires which have failed me again.

Now the main info i'm after is the wireing out put for the standard/splitfire coils on a S2 basically which pin on which coil is what

the next info i'm after is what kind of trigger voltage do the stock use and also does anyone know the factory dwell settings with a stock r33 S2 ecu

the coils i'm using have built in ignitors and only cost me 470 delivered for a set of 8 from the states which is much cheaper alternator to splitfires. and should last alot longer as i've never heard of anyone having problems with stock coils on an LSx series motor

[rob82]

Hey all well basically i've got ahold of some LSx based coils and i'm goin to be swapping out my splitfires which have failed me again.

Now the main info i'm after is the wireing out put for the standard/splitfire coils on a S2 basically which pin on which coil is what

the next info i'm after is what kind of trigger voltage do the stock use and also does anyone know the factory dwell settings with a stock r33 S2 ecu

the coils i'm using have built in ignitors and only cost me 470 delivered for a set of 8 from the states which is much cheaper alternator to splitfires. and should last alot longer as i've never heard of anyone having problems with stock coils on an LSx series motor

The LSx coils from memory use a 5v poitive trigger and need about 3ms dwell at 13volts. They are a dumb ignitor as well. Once again from memory the s2 r33 use a 12v negative trigger with about2.2ms dwell at 13volts. They are also a dumb ignitor. Not sure what yourgoing to do to trigger them.

[Cartman]

The LSx coils from memory use a 5v poitive trigger and need about 3ms dwell at 13volts. They are a dumb ignitor as well. Once again from memory the s2 r33 use a 12v negative trigger with about2.2ms dwell at 13volts. They are also a dumb ignitor. Not sure what yourgoing to do to trigger them.

interesting, how can i check on the car weather its a negative or possitive signal coming out of the r33 ecu?

[rob82]

interesting, how can i check on the car weather its a negative or possitive signal coming out of the r33 ecu?

backprobe the voltage on the trigger wire with ign on if you have 12v or 5v it's a negarive trigger

[Cartman]

backprobe the voltage on the trigger wire with ign on if you have 12v or 5v it's a negarive trigger

cheers, will do that in the morning, what effect will it have on the LSX coil if i reverse the polarity seeing as the coil has a pin for internal ignitor ground and power feed

[rob82]

cheers, will do that in the morning, what effect will it have on the LSX coil if i reverse the polarity seeing as the coil has a pin for internal ignitor ground and power feed

Overcharge the coil by a shit load and probably break.

[Cartman]

Overcharge the coil by a shit load and probably break.

been talking to another mate about it all.... are you sure the stock coils are 12v and ground triggering?

[rob82]

been talking to another mate about it all.... are you sure the stock coils are 12v and ground triggering?

Not 100% its been a while since I've scoped a skyline. I'm sure the specs on the LSx coils are correct tho as well as the dwell times. I would definately check the triggering type before installing the coils tho.

[J'z-R33]

diy,

http://forums.nicoclub.com/my-ls2-ls7-coil-swap-t353832.html

[Cartman]

diy,

http://forums.nicoclub.com/my-ls2-ls7-coil-swap-t353832.html

yeah thats whats given me the idea to do it, however he's got an aftermarket ecu, i want to get it working with stock first.