Tracking the 914 - Need some street love too..., Turning this into a regular thing... Options

[infraredcalvin]

1st track day in the bag with the new 914, no decent pics yet (there was a photog in attendants, but haven’t seen his pics yet). Car rand great and although running with much newer machinery she was holding her own once her driver brushed off the cobwebs... (IMG:style_emoticons/default/driving.gif)

Since this was essentially her first shakedown I found a number of little things I need to address, one in particular I’m questioning:

After a few laps I noticed - mainly on a flat sweeper turn, when entering hard on brakes and trailing off while turning in I’d get a soft groan from my outside wheel (drivers in this case). I’m thinking wheel bearing? I’ve never had one go bad on the front spindle before, so I’ve never heard or felt the slight vibration before. Never really occurred on any other turns.... thoughts?

[Justinp71]

Fyi, they run rich all the time. This is so the transition from idle to main circuit is smooth. These were designed for max power and with economy not in mind. You sound like you have it tuned fairly well.

IMHO main thing is to have it in the 12's or low 13's AFR at full throttle in the high RPM band, then you won't do any damage to the motor.

I'm only running 160 mains on my 3.2 to give it 12.8 -13.4 AFR (@68f outside air temp) at the high end which is good. This motor has cams and headers, should be about 280hp. I would think you might need larger jets? It also depends on on your air jet sizes too, mine are 190. I have F11 emulsions, I thought about trying F7's but it is running good right now just wish it was a little leaner at idle and cruise (12 afr best case).