Quote:
Originally Posted by Aaron
Hi Rosco,
Yes, specifically on the Firestorms.
I absolutely would LOVE to see any videos, pics and anything else you could share about your duplication.
It sounded like Robert Krupa also had to use a modified ignition system for optimum results? Or was it just a high power conventional ignition system? Or none of the above?
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Here is a link to "my shed" on oldholden.com, this will get you to the vids.
The engine used to shoot these vids had just a basic HEI ignition, and the power feed to that unit is likely in need of an upgrade, but it suited my purpose to use it at that time. I've since switched to another engine with a well sorted ignition, yet have only pictures and no vids at this time.
Spark plug indexing
Remember, these were open air tests, and only the colours of the actual sparks should be taken into consideration. You will see where the spark remains blue in colour with a standard "J" gapped plug(1.5mm gap) at idle speed and at 2500rpm, then you will see the colour change with the prototype plug(.30thou gap) at the same engine speeds.
Apologies for the poor quality vids, as it was only the colour aspects of the spark that I was trying to capture at that time, due to the lack of an actual pressure test cell. I wanted to see if the colour went "into the white".
Be patient with the vids too, as they take a little while to open.
I've since acquired a proper pressurised testing cell and have yet to video what occurs under pressure, however I've showed quite a few people what happens when the spark is pressurised, and I guess I should take some video of this and post it accordingly.
You shouldn't need to upgrade your HEI ignition system, I haven't. A standard HEI ignition was used in the later tests, the results of which can be found at the bottom of that page, just click on the blue "no thumbnail" link and it will give you a download option, where you can see the actual temperature readings that were recorded on the day, as well as other relative information.
**You should also disregard the vids where I used the "intensifier" as I had the gap dialled in too close and it never really did what I hoped. I now know that I had too small a gap in place, and I've since re-tested it with a wider gap, but again, have yet to video the results.
I now plan to go to the next level and fit a set of Nology leads, which will again increase spark output, likely by a similar amount to what I realised with the fitting of the Brisk plugs.