mantree91 Posted November 18, 2017 Share #1 Posted November 18, 2017 looking at the wiring diagram it looks like each plug is fired interdependently. Is there still a wasted spark firing on the exhaust stroke or can I time valve events off of the ignition signal? I am wanting to install fuel injection and i will need a signal that can be tied directly to a cam event if I want to use sequential injection instead of batch injection. Link to comment Share on other sites More sharing options...
Condor Posted November 18, 2017 Share #2 Posted November 18, 2017 looking at the wiring diagram it looks like each plug is fired interdependently. Is there still a wasted spark firing on the exhaust stroke or can I time valve events off of the ignition signal? I am wanting to install fuel injection and i will need a signal that can be tied directly to a cam event if I want to use sequential injection instead of batch injection. This is way above my pay grade, but here's a stab at it just because. The RSV ignition does have a wasted spark, and I imagine it fires on the exhaust stroke at the same degree as the power stroke. There'll be a few others that will blow this theory apart, but that OK..... :-) I don't know nuttin'..... Link to comment Share on other sites More sharing options...
mantree91 Posted November 18, 2017 Author Share #3 Posted November 18, 2017 This is way above my pay grade, but here's a stab at it just because. The RSV ignition does have a wasted spark, and I imagine it fires on the exhaust stroke at the same degree as the power stroke. There'll be a few others that will blow this theory apart, but that OK..... :-) I don't know nuttin'.....Thanks that's what I needed to know. Looks like I will be going with batch injection unless I can workout a cam angle sensor. Sent from my SM-G900V using Tapatalk Link to comment Share on other sites More sharing options...
bongobobny Posted November 19, 2017 Share #4 Posted November 19, 2017 Fuel injection has been discussed here before, and a while back there was a guy machining injection systems that slid in where the diaphragms go, but he went out of business. A member here, Flying Fool, has the drawings. There's another member here that had a company from New York design a fuel injection system using a specially fabricated intake manifold and that system did use a sensor for ignition control. So, there's been actual projects using both sequential and batch injection. Both projects are going to cost you a lot of time and money, so you need to decide is it really worth it on a 25 to 30+ year-old bike... Link to comment Share on other sites More sharing options...
mantree91 Posted November 19, 2017 Author Share #5 Posted November 19, 2017 (edited) Fuel injection has been discussed here before, and a while back there was a guy machining injection systems that slid in where the diaphragms go, but he went out of business. A member here, Flying Fool, has the drawings. There's another member here that had a company from New York design a fuel injection system using a specially fabricated intake manifold and that system did use a sensor for ignition control. So, there's been actual projects using both sequential and batch injection. Both projects are going to cost you a lot of time and money, so you need to decide is it really worth it on a 25 to 30+ year-old bike...That's just the thing I already have time and money in the bike with a sidecar mounted and new forks going on. I am considering doing a hybrid build with a vmx1200 head and cam for a bit more pulling power. And the efi has a cople of reasons behind it. One is to make cold starts easer when it's below freezing, 2nd part is that I have to have a project at all times. I would be making a custom manifold with bungs welded on the runners and a single throttle body. Sent from my SM-G900V using Tapatalk Edited November 19, 2017 by mantree91 Link to comment Share on other sites More sharing options...
bongobobny Posted November 19, 2017 Share #6 Posted November 19, 2017 Tell me about it, I have over 6K invested in having PCW Racing rebuild a 1300 with VMax heads alone... Link to comment Share on other sites More sharing options...
Condor Posted November 19, 2017 Share #7 Posted November 19, 2017 Tell me about it, I have over 6K invested in having PCW Racing rebuild a 1300 with VMax heads alone... Holly Rat Feathers Batman!! Link to comment Share on other sites More sharing options...
cimmer Posted November 20, 2017 Share #8 Posted November 20, 2017 looking at the wiring diagram it looks like each plug is fired interdependently. Is there still a wasted spark firing on the exhaust stroke or can I time valve events off of the ignition signal? I am wanting to install fuel injection and i will need a signal that can be tied directly to a cam event if I want to use sequential injection instead of batch injection. To answer your question, yes the engine does use the wasted spark method. Rick F. Link to comment Share on other sites More sharing options...
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