Dan Baldwin Posted October 8, 2004 Share Posted October 8, 2004 Decided the good news deserves its own thread:) I had thought I killed the motor by lean-running-induced detonation. It suddenly lost a ton of power and started running ragged after an acceleration run from ~80 to ~110. Initial look at pistons through the spark plug holes revealed what I *thought* to be detonation evidence. Figgered I might have holed a piston or something (I tend to assume the worst-case scenario has indeed happened). More experienced eyes saw only carbon build-up flecks. The REAL problem turned out to be the Pertronix Ignitor (replaces the points) throwing 2 magnets, killing cylinders 1 and 5. The magnets (being magnetic and all) were right there stuck to the vac advance plate. Glued and taped 'em back in place. Runs mucho better-o with all 6 firing! To the track! Quote Link to comment Share on other sites More sharing options...
Drax240z Posted October 8, 2004 Share Posted October 8, 2004 Excellent! Of course, I would have pulled an all nighter and had the crank on the floor before I found out that it was something so simple. Glad you took the easy road on that one. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 8, 2004 Share Posted October 8, 2004 Doesn't that seem a little weird to you? Any idea why that might have happened? Quote Link to comment Share on other sites More sharing options...
510six Posted October 9, 2004 Share Posted October 9, 2004 I had a similar problem happen to a 510 that I had some years back.I wasn`t running Pertronix, but a Crane Cams photo optical system that used a plastic piece that went over the top of the dist shaft.Well it slipped and I couldn`t figure it out until I pulled out a timing light.Couple of drops of Krazy glue fixed that one. Quote Link to comment Share on other sites More sharing options...
Dan Baldwin Posted October 11, 2004 Author Share Posted October 11, 2004 The little magnets are sorta press-fit into the plastic collar/sleeve that slides onto the distributor shaft, with a couple of layers of adhesive teflon tape holding them in. The tape had come off and the #1 and #5 magnets came out from centrifugal force. I epoxied all of them in place and taped over them again. Won my class at NHIS, and set the SPB class record for NHIS chicane/chicane at 1:18.7. I think I was third-quick overall, behind a Formula SCCA car (1:11s) and a very fast and well-driven ~400rwhp supercharged M3 built by Turner Motorsports (1:15s). It was pretty funny being gridded behind a freaking formula car and in front of the killer M3 for my timed runs (they run groups of cars with similar times to prevent "catches"). There were a few wide eyes at that sight:) Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 11, 2004 Share Posted October 11, 2004 The little magnets are sorta press-fit into the plastic collar/sleeve that slides onto the distributor shaft, with a couple of layers of adhesive teflon tape holding them in. The tape had come off and the #1 and #5 magnets came out from centrifugal force. I epoxied all of them in place and taped over them again. OK, I was just trying to make sure you didn't have a problem like I did. The stator hit the reluctor on my ZX dizzy because the vacuum advance mechanism had come apart and allowed the breaker plate to tilt. When I first saw that the two had come into contact I thought that the distributor bushings that were the culprit but when I disassembled it and checked the bushings they were fine. I know you're using the 240 dizzy, not sure how common bushing or breaker plate issues are on that one. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.