Went to Kragen/O'reilly today to try and get spark plugs. After 1/2 an hour, they gave me NGK Iridium BKR6EIX-11 and they said they were the same (or cross referenced) to the NGK PFR7G. They needed the stock number for the PFR7G's which apparently they could not figure out. Should I use them (NGK Iridium BKR6EIX-11)?
In a racing environment, there are generally no emissions standards and an excessive amount of fuel present. This environment can cause spark blowout if you are not using the appropriate setup. Platinum spark plugs are not recommended in this situation because, more often than not, spark blowout will occur due to the fact that the tip surfaces of a platinum spark plug is not large enough to make a good conductor in a rich, super high compression environment. Standard type spark plugs provide plenty of surface area for the spark to conduct under such conditions. Therefore a conventional non-resistor spark plug is recommended because it has a larger surface area that will allow the spark to occur.
Thanks. That helps out a lot.These work well for me: NGK BKR7EIX-11
They're Iridium electrodes with the proper heat range and gap for supercharged 2ZZs...
The specified gap is 1.1mm (0.043"). BTW, that's what the "-11" in the plug's part number refers to.Thanks. That helps out a lot.
Do you know what the recommended gap is for the plugs? I like to check before I put them in. I know they say "pre-gapped," but I've had them come out of the box at 28 and otheras at 48.
What does Lotus recommend for the S cars?The specified gap is 1.1mm (0.043"). BTW, that's what the "-11" in the plug's part number refers to.