End of Injection Timing Open Discussion

[kevinodb1]

Hi Folks

As per my previous post here is the generic data I have on Injector timing.

1: From the Lucas site, there is the start point for testing, used on Formula 5000's etc

2: There is a Generic PDF on the subject

3: The Chart I developed when tuning the Triumph TR6 with a very radical cam(For a 2700cc engine that is)

I chose to display it over the top of a chart I borrowed from the internet. You can see the STD triumph Cam there and the revised method Triumph used to set it up on later cars and what I ended up with for the rad cam.

The triumph is limited by the Teeth driving the metering unit where it has about half what the Cosworths have. So not as flexible as an electronic sequential where we can(IDEALLY) get it perfectly matched to the cam.

Also shown are the Cosworth DFV F1 timing and Cosworth BDG timing.

What I think would be ideal is to have a similar chart as a page in EEHACK where you enter the cam timing at zero and .050 lift and it draws to scale(horizontal) the events so people can see what the differences are, perhaps
even showing two camshafts at once Dotted and Full lines for comparison(Just a thought)

A line would represent the current EOIT point that matches the slider position and the BOIT point would be shown calculated from the Pulse Width, MAYBE?

Cheers
Kevin
Wellington
new Zealand