I thought I would make this a separate thread so that I can actually log the progress I've made. Since pulling the head I have confirmed the following measurements:
Bore: 3.68"
Piston to Deck Clearance: 0.020"
Gasket Thickness: 0.043"
Gasket Diameter: To do
LSA: To do
Intake Duration: To do
Exhaust Duration: To do
Intake Lift: 0.224" <- Edit
Exhaust Lift: 0.231"
So plugging in all of the stuff I know now into my handy-dandy homebrew engine calculator, the existing engine (baseline) looked like this:
================================================
INPUT - BUILD PARAMETERS
================================================
Block Specifications:
Cylinder Bore = 3.68 in
Centerline to Deck Height = 7.808 in
Rod Length = 4.715 in
Stroke = 3.126 in
Piston Dish Volume = 6.5 cc
Piston Compression Height = 1.51 in
Cylinder Head Specifications:
Combustion Chamber Volume = 53 cc
Intake Valve Diameter = 1.649 in
Exhaust Valve Diameter = 1.38 in
Rocker Arm Ratio = 1.65:1
Cylinder Head Gasket Dimensions:
Gasket Diameter = 3.81 in
Gasket Crush Height = 0.043 in
Camshaft Specifications and Events:
Intake Duration = 256 deg
Exhaust Duration = 256 deg
Lobe Separation Angle = 114 deg
Cam Intake Lift = 0.226 in
Cam Exhaust Lift = 0.231 in
Ground-in Advance = 0 deg
Camshaft Installation Advance = 0 deg
Intake Opening Angle = 14 deg BTDC
Intake Closing Angle = 62 deg ABDC
Exhaust Opening Angle = 62 deg BBDC
Exhaust Closing Angle = 14 deg ATDC
Intake Valve Lift = 0.3696 in <- Edit
Exhaust Valve Lift = 0.38115 in
Valve Overlap = 28 deg
================================================
OUTPUT
================================================
Engine Displacement = 199.49 in^3
Rod to Stroke Ratio = 1.51:1
Rod Angle = 19.36 deg
Resulting Deck Height = 0.02 in
Squish Distance = 0.063 in
Static Compression Ratio = 8.67:1
Dynamic Compression Ratio = 7.14:1
Bore: 3.68"
Piston to Deck Clearance: 0.020"
Gasket Thickness: 0.043"
Gasket Diameter: To do
LSA: To do
Intake Duration: To do
Exhaust Duration: To do
Intake Lift: 0.224" <- Edit
Exhaust Lift: 0.231"
So plugging in all of the stuff I know now into my handy-dandy homebrew engine calculator, the existing engine (baseline) looked like this:
================================================
INPUT - BUILD PARAMETERS
================================================
Block Specifications:
Cylinder Bore = 3.68 in
Centerline to Deck Height = 7.808 in
Rod Length = 4.715 in
Stroke = 3.126 in
Piston Dish Volume = 6.5 cc
Piston Compression Height = 1.51 in
Cylinder Head Specifications:
Combustion Chamber Volume = 53 cc
Intake Valve Diameter = 1.649 in
Exhaust Valve Diameter = 1.38 in
Rocker Arm Ratio = 1.65:1
Cylinder Head Gasket Dimensions:
Gasket Diameter = 3.81 in
Gasket Crush Height = 0.043 in
Camshaft Specifications and Events:
Intake Duration = 256 deg
Exhaust Duration = 256 deg
Lobe Separation Angle = 114 deg
Cam Intake Lift = 0.226 in
Cam Exhaust Lift = 0.231 in
Ground-in Advance = 0 deg
Camshaft Installation Advance = 0 deg
Intake Opening Angle = 14 deg BTDC
Intake Closing Angle = 62 deg ABDC
Exhaust Opening Angle = 62 deg BBDC
Exhaust Closing Angle = 14 deg ATDC
Intake Valve Lift = 0.3696 in <- Edit
Exhaust Valve Lift = 0.38115 in
Valve Overlap = 28 deg
================================================
OUTPUT
================================================
Engine Displacement = 199.49 in^3
Rod to Stroke Ratio = 1.51:1
Rod Angle = 19.36 deg
Resulting Deck Height = 0.02 in
Squish Distance = 0.063 in
Static Compression Ratio = 8.67:1
Dynamic Compression Ratio = 7.14:1