for weeks now, ive been trying to re-arrange all the wiring thats tucked under the bonnet of the truck and its just not happening still looks like a horrible mess or wires,
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Keeping your engine bay tidy
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Martyn
I know that the leads are a bit to close to each other but I dont have any misfires at any speeds and the motor runs like a watch.
Everything ignition wise is MSD aprt from the dizzy and the lead carriers I made up and then Plasticoated.
The little lead separators are stock MSD items and are made from some kind of plastic which again cause no problems.
Ideally the leads should be at least 1" apart for optimum performance but after trying that it looked shocking and I could not live with it.
As I say "Far to anal for my own good"
Cheers
P
I know that the leads are a bit to close to each other but I dont have any misfires at any speeds and the motor runs like a watch.
Everything ignition wise is MSD aprt from the dizzy and the lead carriers I made up and then Plasticoated.
The little lead separators are stock MSD items and are made from some kind of plastic which again cause no problems.
Ideally the leads should be at least 1" apart for optimum performance but after trying that it looked shocking and I could not live with it.
As I say "Far to anal for my own good"
Cheers
P
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- Knows His Stuff
- Posts: 667
- Joined: Fri Nov 17, 2006 11:22 pm
- Location: Bedford UK
- Contact:
Hoping this is not a Hijack?
Cross-firing, caused by an avoidable electrical phenomenon known as Electromagnetic Induction (measured as 'Inductance') but only critical with cylinders 5 and 7 on the RV8.
NOT as seen in my images above (since corrected, by the way, with noticeable improvement to mpg, lower engine temperature and smooth running ), taken before I learned of this interference issue:
Cross Firing may occur when plug leads No. 5 and 7 are adjacent to each other in their separators. As piston No 5 approaches TDC and receives its spark, piston No 7 is 90 degrees behind, part way through its compression stroke. The high voltage in lead No 5 induces a discharge in No 7 by electromagnetic inductance. The resultant spark prematurely fires the partly compressed mixture in cylinder No 7 causing a partial burn, inefficiency overheating and likely collateral damage. To prevent this unique cross firing occurrence, those two plug leads must not be adjacent to each other.
The above extract being part of my recent (typical)) RV8 Ignition treaty. Here: -- And Here:
martyn123 wrote:wondering if the leads run that close to each other the whole length can they interfere with each other
You are both 100% correct. If close enough, they ALL interfere with their neighbours.gelmonkey wrote:Ideally the leads should be at least 1" apart for optimum performance but after trying that it looked shocking and I could not live with it.
Cross-firing, caused by an avoidable electrical phenomenon known as Electromagnetic Induction (measured as 'Inductance') but only critical with cylinders 5 and 7 on the RV8.
NOT as seen in my images above (since corrected, by the way, with noticeable improvement to mpg, lower engine temperature and smooth running ), taken before I learned of this interference issue:
Cross Firing may occur when plug leads No. 5 and 7 are adjacent to each other in their separators. As piston No 5 approaches TDC and receives its spark, piston No 7 is 90 degrees behind, part way through its compression stroke. The high voltage in lead No 5 induces a discharge in No 7 by electromagnetic inductance. The resultant spark prematurely fires the partly compressed mixture in cylinder No 7 causing a partial burn, inefficiency overheating and likely collateral damage. To prevent this unique cross firing occurrence, those two plug leads must not be adjacent to each other.
The above extract being part of my recent (typical)) RV8 Ignition treaty. Here: -- And Here: