I know Wistech and I dynoed a few lengths.Raising the throttlebody and we lost power everywhere I think.But we never had a formula found one so more investigation is needed.
Chrysler testing resulted in a formula to calculate where the ram effect will come into play. To wit: N x L = 84,000, where N represents the desired engine rpm to tune for and L is the length in inches from the opening of the ram tube to the valve head. Shope explains: "Let's say you're running at Bonneville with an engine that develops peak horsepower at 8,400 rpm and want to tune for maximum ram effect at that level. Then, L should equal 10 inches, as in 8,400x10 inches = 84,000." To achieve ram tuning at 5,500 rpm, simply divide the constant, 84,000 by 5,500 rpm. The result of 84,000-5,500 = 15.27, the ideal distance for the intake tract as measured from the opening of the ram tube to the valve head.
Intakes
Post your R&D threads here, what are you working on?
Message
Author
Jump to
- Vendors
- ↳ Matczak Machining (aka: timbomoose)
- ↳ Blackwidow ATV
- ↳ Canno Moto
- ↳ THE SHOCK DOC
- ↳ Announcements and Specials
- ↳ Vendor Polls
- ↳ Archive
- ↳ MX-Tech suspension (East Coast)
- ↳ Teixeira Tech
- ↳ Hiper Technology
- ↳ R.I.S. DESIGNS
- ↳ P.C. PRODUCTS
- ↳ Great Lakes Quad Racing Action
- ↳ Joe and Mike Creations
- Riders
- ↳ CannondaleRiders Race Reports
- ↳ Where to Ride
- ↳ Trail Tales
- ↳ Dune Tales
- ↳ Mini Forum
- ↳ Events/Races
- Mechanical
- ↳ Steering and Suspension
- ↳ Powertrain
- ↳ Body
- ↳ Maintenance
- ↳ Dyno Charts
- ↳ Cannondale Motorcycles
- ↳ Cannondale Quads
- ↳ Mapping
- ↳ R&D
- ↳ Updates and tips
- General
- ↳ Open Forum
- ↳ Frequently Asked Questions
- ↳ Non-Cannondale Forum
- ↳ Faqs and How To Articles
- ↳ Trivia
- Classifieds
- ↳ For Sale
- ↳ Wanted
- ↳ Trader Feedback
- Miscellaneous
- ↳ Comments and Suggestions
- ↳ Cannondaleriders Quad/Bike/Rider of the Month
- ↳ CANNONDALERIDERS STORE
- ↳ TEAM CANNONDALERIDERS