4:00 am Sunday morning...just got home from a TNT at Bowling Green. I learned a valuable lesson this evening...I totally suck at building Q-jets. I can take a good one and tune on it, but just can't get one of my own to go down track.
Here is the first pass with the original carb that I had leaned considerably...
The car left strong and ran well down track...first time in a long while it has been in the 1.40 range in 60' times. The mph was down from the normal 113...I assumed it may have been a little too lean.
The next three runs were with my versions of a '67, Edelbrock, and a Q-jet aptly named "Morphadite" in that order...all total failures to say the least.
Stock racer Brian Rogers just happened to be at the track last night and he stopped by in staging. He looked the car over well and found nothing totally amiss. We talked a bit and he said he would come over to my pit space after my run to tinker with a carb. After picking my brains for a bit we decided to try an even leaner secondary rod in the original carb that he had run years before he went to a 302 stick shift.
The car felt good from start to finish, but I felt it may have been too lean for the conditions. We made a slightly richer rod change for the final pass of the night and it responded well. I believe I will take Brian's advice about leaving the carb alone for now until I can try someone's known good running carb for comparison. This way I will know if we need to be looking elsewhere for gains or not.
In the two weeks before the upcoming two day Combo race we will do a compression/leak down test on all cylinders just to verify no motor problems. The final two timeslips and with that I'm off to bed.
07-06-2014, 06:21 AM
Re: '67 Camaro E/SA redo
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