This is how NGK X4K spark plug cable & cap set fit to Quattro Valvole
http://www.flickr.com/photos/mattinaskali/3947586024/in/set-72157622306305523/
Another benefit, is that these caps don't have extra 5k ohm resistance. V8 spark plugs already have resistors. I think 10k ohms is just too much. Better fuel economy and power with less resistance, and I believe 5k ohm resistor in the plug is suficient for radio noise anyway.
I wonder if the sealing rings, two or three, have no impact really? There is an opening to the spark plug compartment in the front of the cylinder head anyway.
- Matti
![3947586024_a5911994ac_m_d.jpg](http://farm3.static.flickr.com/2528/3947586024_a5911994ac_m_d.jpg)
![3953983891_b9c7f6c152_m_d.jpg](http://farm4.static.flickr.com/3503/3953983891_b9c7f6c152_m_d.jpg)
http://www.flickr.com/photos/mattinaskali/3947586024/in/set-72157622306305523/
Another benefit, is that these caps don't have extra 5k ohm resistance. V8 spark plugs already have resistors. I think 10k ohms is just too much. Better fuel economy and power with less resistance, and I believe 5k ohm resistor in the plug is suficient for radio noise anyway.
I wonder if the sealing rings, two or three, have no impact really? There is an opening to the spark plug compartment in the front of the cylinder head anyway.
![3949869867_5db1e2973b_m_d.jpg](http://farm3.static.flickr.com/2576/3949869867_5db1e2973b_m_d.jpg)
- Matti