benefits of distributor-less ignition
12-15-2014, 07:54 PM
#11
I am a bit familiar with Eletromotive units built into their EFI and stand alone. What it does do is reduce emmisions a bit as a plug is fired on compression and one on exhaust at the same time. They eliminate a spark gap. They have the ability to adjust dwell eletronic distributor systems dont. A 1bar map sensor can be connected to act like vacuum advance (not sure how well that would work on a marine app but would try it. Of corse for boost other MAP sensors can be installed. More time for the coil to build up spark. Oh it does help carb set ups too.
12-16-2014, 05:45 AM
#12
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Eddie installed them on my engines. One of the main benefits is the ablility to run dual knock sensors which is a lot more protection for the engine. My engines were 1070hp quad efi whipples. Fuel distribution with my set up was poor because I wanted to go with low boost. If you crank up the whipples the distribution is much better but my main goal was longevity. With the MSD, distribution between the 2 banks was way different forcing Eddie to tune the richer bank even more rich. When he changed to the coil on plug system, he was able to get them almost the same. This didn't correct the distribution issue but masked it because the coil on plug system had the ability to ingnite the fuel load in the cylinder. My oil with the MSD would become fuel contaminated pretty quickly. With the coil on plug the oil just remained like new til I changed at the end of the year.
It is pricey, but worth it. Really, ideal for all performance engines would be distributorless ignition and port injection. I think Eddie pretty much only does distributorless ignition now as it really doesn't cost that much more with a scratch build.
It is pricey, but worth it. Really, ideal for all performance engines would be distributorless ignition and port injection. I think Eddie pretty much only does distributorless ignition now as it really doesn't cost that much more with a scratch build.
12-16-2014, 05:50 AM
#13
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iTrader: (2)
Eddie installed them on my engines. One of the main benefits is the ablility to run dual knock sensors which is a lot more protection for the engine. My engines were 1070hp quad efi whipples. Fuel distribution with my set up was poor because I wanted to go with low boost. If you crank up the whipples the distribution is much better but my main goal was longevity. With the MSD, distribution between the 2 banks was way different forcing Eddie to tune the richer bank even more rich. When he changed to the coil on plug system, he was able to get them almost the same. This didn't correct the distribution issue but masked it because the coil on plug system had the ability to ingnite the fuel load in the cylinder. My oil with the MSD would become fuel contaminated pretty quickly. With the coil on plug the oil just remained like new til I changed at the end of the year.
It is pricey, but worth it. Really, ideal for all performance engines would be distributorless ignition and port injection. I think Eddie pretty much only does distributorless ignition now as it really doesn't cost that much more with a scratch build.
It is pricey, but worth it. Really, ideal for all performance engines would be distributorless ignition and port injection. I think Eddie pretty much only does distributorless ignition now as it really doesn't cost that much more with a scratch build.
12-16-2014, 10:04 AM
#19
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iTrader: (4)
Whipples line up is 3.3, 4,5,8.3 litres. The 3.3 not enough, my quads were the twin 2.3 so 4.6 total. I found a deal on the quads which was about one third the cost of a new whipple intake, intercooler and blower system. Eddie was not excited about using the quads.
12-16-2014, 01:45 PM
#20
Registered
most all of the EFI's running now are batch fired some have gone to sequential, but more complexed...the holley unit it I believe, Alex haxby can answer that easily...
Last edited by ezstriper; 12-16-2014 at 02:07 PM.
