Originally Posted by chip-3door
Originally Posted by Cam
Good topic
I was under the impression that the possible risk of it happening with wasted spark was dramatically increased when running cams with long duration/overlap.
Thats possibly true, although again ive not presently seen any evidence of it.
Turbo cars typically run LESS overlap though of course, so arguabley are less likely to suffer than a N/asp car.
I read a post on one of the Skyline forums where some guy had blown his trick Veilside plenum and its was the general consensus of opinion that it was due to running wasted spark CDI ignition and 290deg/hi lift cams. A lot of hipo road GTRs are running 272+ deg/high lift cams [mines running 282 deg/10.8mm lift] so its one of the main reasons that I dont want to run wasted spark CDI.