Here are a couple of pics of the sensor during setup. I had to make the timing sensor bracket. Jim

Well I finally made it to the track this year for the first time. Over the winter I completely rewired the car, added a crank trigger and a data logging system. The car fired up better than ever and ran really well in the garage and loading onto the trailer. Little did I know. When we got to the track we drove the car around the pits and it ran great. When our 1st time trial came up my son did a burnout and staged. As you can see from the datalog #2 the timing was steady but the motor wouldn't rpm. This became very apparent when he launched the car and he let off and basically cruised down the track and back to the pits. With only a few time trial available before eliminations I decided to run the ignition off of the MSD's magnetic pickup and retime it which solved the rpm problem allowing the motor to rev past 5000. One thing to note is how much more the timing "sewing machines" in the datalog #13 which is a pass using the MSD's distributors magnetic pickup. The car and really consistent the rest of the weekend so I did not spend more time on the crank trigger. Today it dawned on me that for some odd reason I have had to run my ignition box on the "points rising trigger" setting to make the MSD distributor work in the past. I think if I change my ignition box setting to magnetic falling it will solve my issues with the crank trigger. I guess that will teach me to go to a competitive race weekend with zero test passes on a new combo. Jim

Sorry guys, between my work and my sons schedule, we haven't made it out yet. I'm ready to go and have purchased entry into the Show and Go @ BIR over the 4th weekend. I'll let you know how it goes. I'm excited to make some passes with the data logger and see what's happening during each run. Jim

Thanks for all the replies, I am using shielded wire, but they are not twisted. I did make a jumper harness with reverse connections in it and per the Innovators West instructions I tried it both ways. The instructions state that whichever orientation gives the most advance with a digital system is the correct way. The engine seems to run very good in the shop. I have a data logger that should record my timing during my passes and graph it out. I am going to test on the 30th hopefully and will report how all is working then. I may order a new shielded, twisted and grounded pickup wire from MSD if the data logger shows timing movement during my runs.

Single, I had ProSystems build me a single 950cfm carb. I was not impressed with the build as the needle and seats were not what was on the spec sheet. I put in BLP 140's and upgraded everything to stainless and viton inside the carb on my own as Patrick the owner was not a great help. In the end I ended up going up 10 jet sizes from as delivered to get my 82 lamda reading on my afr to make me feel comfortable. When I dyno's the motor on race gas it made 540hp. We then switched to my E85 carb and made 530 hp with the carb as delivered. I am confident that had the O2 sensor been working on the dyno to let us no just how lean we were, we would have surpassed the race gas number. I do run pump E85. I do test it to make sure it tests at at least E80 to run it. Jim

I run an NTK unit in my Comet. It has worked well even though I was running leaded race gas. I would recalibrate it each spring and was good to go. I did put a new sensor in 2 years ago when I switched to E85. The only downfall is this is a digital readout and the display can be hard to read on bright days.  It also has a 0-5v output so I can tie it into my data logger. Jim

So as discussed in a prior thread, I am running a lot of spring pressure. About 650 open. This 416ci motor goes through the traps at 6900rpms. The motor has been running very well. This fall when I put it away for the winter, I was wondering if I should pull the T&D rockers and Crower lifters and send them in for inspection. They will have about 80 passes on them at that point. How often should I have them inspected if I am not having any issues? Thanks Jim