I need your old fucntioning stock coils

[NoDOHC]

Wow! I get lost for a few months and Brian has a coil test under way. Great Job Brian!

By the way, in your original post you seemed surprised that you were getting power gains at leaner AFRs, this is completely expected. If you do combustion research, you will see that 0.85-0.90 lambda is optimum for spark-ignited applications. This is independant of boost (although higher chamber temperatures will skew the curve slightly to the rich side). With the cooling you have on that beast, I would expect 12.8-13.2:1 to be your optimal AFR.

Keep up the good work! It will be very useful to the rotary world to have a dyno-proven comparison between the leading ignition solutions.

Like you said, the whole 'my new ignition feels really fast' thing doesn't really prove a thing. Case in point: I was firmly convinced that wiring the 6PI ports open on my '86 was a major improvement in power. Timing it with the G-Tech indicated a significant decrease in low end that resulted is a slower 0-60 time. I was wrong about the major improvement, no mater how sure I was about it.

[TitaniumTT]

Originally Posted by 2gslse

OK I will order a set when are you planning to do testing? I can get the coils back at DGRR. I will need you to PM me your Address so I can ship them to ya.

Sorry I missed this.

Planning on doing the testing in the early pary of April.
I'll definately bring them to DGRRX
I'll PM ya in a bit with the shipping addy. Also going to need whatever connectors are needed to feed them power, gnd, and signal. Do you know what plug wire ends they use? Please say LSX

Originally Posted by NoDOHC

Wow! I get lost for a few months and Brian has a coil test under way. Great Job Brian!

By the way, in your original post you seemed surprised that you were getting power gains at leaner AFRs, this is completely expected. If you do combustion research, you will see that 0.85-0.90 lambda is optimum for spark-ignited applications. This is independant of boost (although higher chamber temperatures will skew the curve slightly to the rich side). With the cooling you have on that beast, I would expect 12.8-13.2:1 to be your optimal AFR.

Yeah I know, but in the pig rich arena, like low .7L's or 10-10.5, when we went up a touch from there, we made big gains in power. More so than other turbo rotary's would have jumped up. Dave and I went to a few other dyno sheets from other cars and my jumps were much more than thiers when making similar changes to L

I think 13.2 (.9L) is really pushing it on pump with no AI on a turbo. @ 13.6 (.92L) without adjusting the timing we warped a few Apex seals. .85L is about as high as I'm willing to go.

Originally Posted by NoDOHC

Keep up the good work! It will be very useful to the rotary world to have a dyno-proven comparison between the leading ignition solutions.

Thanks man, I agree, we need something like this across the board. I've seen some RX8 to other coil comparisions, but I think this will be interesting to say the least.

Originally Posted by NoDOHC

Like you said, the whole 'my new ignition feels really fast' thing doesn't really prove a thing. Case in point: I was firmly convinced that wiring the 6PI ports open on my '86 was a major improvement in power. Timing it with the G-Tech indicated a significant decrease in low end that resulted is a slower 0-60 time. I was wrong about the major improvement, no mater how sure I was about it.

Been there too. I want a G-tech, what do you think of that little thing? Accurate, repeatable?

About the only thing that I would listen to objectively would be idle quality/stability and ease of starting. I'm really looking forward to testing the Bosch coils, the D510C's and the stock FC with the MSD box. I'm not sure where I want to put my money on that one.