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Multiple Carbs: advantage?

  • Thread starter Thread starter XL-erate
  • Start date Start date
XL-erate said:
Thanks drhach!

I've researched ram tuning/tuned length intake & exhaust & have some good formulas. I'm familiar with sinusoidal wave harmonics and wave reversions etc. What I've found agrees with what you suggest and also, yes, probably not a real noticeable difference if done right.

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Click to expand...

I can point you to a really good book. "Advanced Engine Technology", by Heinz Heisler. It has tons of good stuff on every aspect of engine theory. It's published by The Society of Automotive Engineers. Amazon has it for $70 http://www.amazon.com/Advanced-Engine-Technology-Heinz-Heisler/dp/0340568224 . It's alittle pricey but it goes deeper than most stuff you can find out there.

When I was in college, I had the oppurtunity to design an intake system for my capstone project. It was a lot of fun. I worked closely with an engineer at Ford who did intakes for a living. I did tons of computer simulations with different intake lengths to compensate for low spots on the Torque/power curve. We were modelling a Honda CB600. We decicided on an appropraiate length based on our model and we built the intake. It was fuel injected with a plenum and one throttle body. After we built it, we put it on the engine and dyno'd the engine. I was surprised how close the computer simulation came to the actual perfomance. I have to say though, that the gain was really trivial. For the street, most motorcycles are way overpowered anyway. You'd do much better putting all of your efforts into suspension tuning. Even for our case, where we were building a race application, there was way more power on thap than what we could get to the ground. It was good lesson in practicality and priority setting.
 
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