Hi guys I'm pretty sure I need to rebuild it but I thought it worth asking the question. Last week I was about to race at Sydney dragway but I thought maybe I should do a compression test as I hadn't done one since fitting turbos. Cyl 1 to 5 were 150psi and #6 was 100psi wet or dry, the engine had been run that day but wasn't at operating temp. It doesn't use oil and still goes as good as it did at the skyline drag day where it ran 12.1 at 118mph. So I'm wondering if there is another test? I disconnected the cas and turned it over to listen for any difference while cranking but it sounded the same on each cylinder. Before I changed turbos I also attended a Wednesday night where the coil packs gave up and that's the only time I can think of anything actually going wrong with the car, but since then it's been dyno tuned and done at least 10 passes, is that possible with one cylinder 50psi down? Or am I just clutching at straws and need to rebuild it ?
Scott