Kawi2strokes.com Forum

Here is a list of (stock) design parameters that can be used with referenced calculators:
Dimension H1 H2
Bore 60.1 71.1
Stroke 58.8 63 https://goodcalculators.com/compression ... alculator/
Head Gasket 0.5 0.5 http://www.torqsoft.net/compression-ratio.html
Base Gasket 0.5 0.5 https://lambretta-images.com/tuningh/po ... alculator/
Head Volume 17.3cc 24.3cc Select "Tuning" for additional calculators
Exh Port Ht (frm cyl top) 35.4 36.8
Exh Port Ht 26.8 29.3 https://49ccscoot.proboards.com/thread/ ... ion-ratios
Exh Port Width 39 43 How to measure head volume
Intake Port Ht (frm cyl top) 65.4 66.1
Intake Bottom (frm cyl top) 92.9 95.9
Intake Port Ht 27.5 29.8 Swept Volume = Uncalibrated Volume
Intake Port Width 41 48.5 Trapped Volume = Calibrated Volume
Boost Port Ht (frm cyl top) 52.9 52
Boost Port Ht 12.6 14.1
Compression Ratio 6.8:1 7.0:1
Cranking Compression 142psi 142psi
Rod Length 109.995 120.002
Piston TDC to Deck 1.3 1
*all values in mm
Much easier to read here:
http://kawatriple.com/performance/designspecs.xlsx

_________________
Answers are here: http://kawatriple.com/