DODGEMECH or someone who knows, Can you give us the technical details on the RT ignition. Inquiring minds need to know

 

What do you want to know....it's like having built MSD ignition. Instead of having 1 flame front, you have 2. Doesn't help power much, more for smooth running and emissions, it makes the engine run very efficient.

 

I may have the system wrong since the manual is not especially clear on the functionality but this seems to be completely different from an MSD multiple discharge ignition that fires one plug multiple times below 3000 RPMs. What started this was that I noticed that the coils are cross wired. For instance each cylinder has a wire from a coil on the cross bank. I researched the manual and found that the firing order is coil 1 8 4 3 6 5 7 2 it also shows plug 6 5 7 2 1 8 4 3
So it is cross wired 1/6, 2/3, 4/7, 5/8

It appears that when #1 fires at say 32 degrees BTDC then #6 also fires at 32 degrees BTDC of the exhaust stroke. Apparently to improve emmisions. Is this correct?

 

That is what I also believe is happening. The second plug is fireing on the second stroke to burn off any unused fuel to help with emitions. Does nothing for performance. Did see some articals where people were trying to get both plugs to fire at the same time. I don't know if this would give any more power.

 

My thoughts are that it would be simple to rewire the coils to fire both plugs on the same cylinder at the same time. All it would take is about a 4 " wire. Unplug the cross fire cylinder and hook that coil connection to the second plug.

 

people have been doing that on the hemi rams, from the dyno tests it was basicaly no hp or torque increase, though suposedly the engine idles a little better after doing it, don't know if it will make it fail emissions tests though, the 5.7 hemi crate motor actualy comes like that I belive, also I think the 6.1 hemi may be like that as well, there are no spark plug wires running over the top of the intake manifold like the 5.7, unless they used longer cables and ran them around the back side of the engine.

 

You have it right Jerry, same principle just done differently.