When we released our latest book, High Horsepower Tuning for Mechanical Fuel Injection, we received a very kind letter from Jim Kinsler of Kinsler Fuel Injection: To: Bob Szabo I have enjoyed reading through your “High Horsepower Tuning for Mechanical Fuel Injection”. Very nicely done! Bob, it is nice to see how thoroughly you do […]
Recently we’ve gotten some positive feedback we wanted to share: “Thank You for the prompt reply and formulas you provided, now onward…….. Just want to tell you how much your books helped me in the tuning area. The reading was technical but interesting and informative. I found myself reading each chapter twice before moving on […]
Mr. Szabo Just an update on my 572. Went to the dyno and made 968 hp, 833 lbs/ft torque. This is with Ron’s Terminator, a 01/2 twin gear pump, .037 nozzles, and a .102 main jet. Air/fuel ratio was 5.3. I was pleased! The information in your books was very helpful and allowed me to […]
I had an interesting email exchange with a very knowledgabel and astute racer that I thought I would share. I’m happy to see he noticed the differences: I noticed an error in the “Superchargers for IHRA” article… “One way of looking at where all of that power came from is to look at the displacement […]
Received this email from a knowledgeable racer: Crew of an A-Fuel car (nitro) Bought all your books. Excellent reading. However, my calculated AFR number gives unreal value. How can I make this applicable to nitro?
Question: Different racers get different boost readings
QUESTION: Do any of your books help in areas of tuning with using O2 sensors? I am needing some what of a baseline for a good tuneup using the correct nozzles, pills to help with getting the most or should I say most consistent in drag race ET’s. Of course everything being the same. Thanks […]
Message: in your fuel injection book, you show a vacuum gauge with a telltale, do you know where to obtain one of these gauges? KS It is not a vacuum gage but a pressure gage. You probably want a 0-200 psi, liquid filled, tattle tale gage.
Question: Effect of lowering blower overdrive?? More or less power? Bob?s answer: A trend now is gearing the blower to the racetrack. That is done with rear end gearing, tire size, shift point, and blower overdrive. Adjustment of any of those will change the speed attained by the blower at the end of the drag […]
Question: Can we put an 8-71 blower on a high output, normally aspirated Big Block V-8 with very high compression ratio (15 to 1)? Answer: The detonation can be controlled with enrichment and air to fuel ratio control, theoretically regardless of the compression ratio. However, I am not sure about the mechanical strength of the […]