D14 on Lotus Engine Simulator [Urgent]

[Dodo Bizar]

I thought D14 chambers in the head was the same as D16Z6... perhaps inner runner diameter as well?

[hondaNickx]

D14 and y7 heads are the same ,same casting numbers same volumes.Only difference is the cam.Which i looked up yesterday the oem part nr. of the D14a4 cam and the D16y7 are different.So the cams arent the same unlike somebody else on here stated they where by vissual comparison.Those cam specs from the D14a4 cam are from my OEM D14a4 cam that Bisimoto measured before he regrinded it.So they are correct afaik.

[Law_]

Tomorrow is a big day. In the morning will measure all the head. in the noon will modulate great part of the engine and remove some errors.



Cheers

[mynameisowen]

This is really great work Law!!!

[Law_]

Sorry for not giving any news for so long... im doing the researh needed for finishing this project. until there, the head surface volume was already calculated on solid works. approximated model of D14a4 stock has already 103hp, but camshaft values, and boundary conditions are not ajusted. Talked to Bisimoto to understand what is what, cause i'm not being able to do the valve motion graph based on this :

0.296" Intake lift, adv dur 224, at 0.040" 196
0.290 Exh lift, adv dur 226, at 0.040" 192

Anyone can help me with that?
I will left you guys with my measures and the ones missing (if you guys could measure some as piston mass and rod mass) and some pics x)









And the measures :

Intake pipe - Length from beginning till resonator – 250 mm
Intake pipe - Diameter – 65 mm for 10 mm and 50 mm for the rest 240 mm
Intake pipe - Wall thickness – 2 mm

Resonator - Volume – 6.5 Litres
Resonator - Surface area – 21 dm2

Intake pipe - Length from resonator to Filter Housing - 540 mm
Intake pipe - Diameter – 50 mm
Intake pipe - Wall thickness – 2 mm

Filter Housing - Volume – 3 Litres
Filter Housing - Surface area (approx. to a triangular pyramid) – 120000 mm2

Throttle Body - Discharge CF - 1
Throttle Body - Throttle diameter – 55 mm
Throttle Body - Closed angle – 2 Degree
Throttle Body - Throttle angle – 90 Degree
Throttle Body - Spindle diameter - 6 mm

Intake manifold - Plenum (approx. to a cube) depth – 80 mm
Intake manifold - Plenum (approx. to a cube) width – 90 mm
Intake manifold - Plenum (approx. to a cube) length – 130 mm
Intake manifold - Plenum (approx. to a cube) volume – 0,94 L
Intake manifold - Plenum (approx. to a cube) surface area – 58600 mm2
Intake manifold - Connect pipe (approx. to a circle) diameter – 61 mm
Intake manifold - Connect pipe (approx. to a circle) lenght – 5 mm
Intake manifold - Runner length from plenum to head – 22 cm and 23,5 cm
Intake manifold - Inner Diameter (mm) – 32,45 mm (equivalent diameter)
Intake manifold - Inner Diameter in the connection (mm) – 32,45 mm (without inj. Gap)
Intake manifold - Wall Thickness (mm) – 5 mm

Engine Head - Y tipe Port – Wall thickness – 12,5 mm
Engine Head - Valve Open (deg) -
Engine Head - Valve Close (deg) -
Engine Head - Dwell at Maximum (deg) – 0º
Engine Head - Max Lift (mm) -
Engine Head - Maximum Opening Point (deg) -
Engine Head - Opening and Closing Lash (mm) -

Cylinder - Bore and Stroke - 75x79 mm
Cylinder - Con-rod Length (mm) - 138 mm
Cylinder - Compression ratio - 9.2
Cylinder - Pin Off-Set (mm) -
Cylinder - Cyl Axis Angle (deg) -
Cylinder - Piston Mass (kg) -
Cylinder - Con-Rod Rot Mass (kg) -
Cylinder - Con-Rod Recip Mass (kg) -
Cylinder - Con-Rod Inertia (kg.m²) -

Engine Head - Y tipe Port – Wall thickness -
Engine Head - Valve Open (deg) -
Engine Head - Valve Close (deg) -
Engine Head - Dwell at Maximum (deg) – 0º
Engine Head - Max Lift (mm) -
Engine Head - Maximum Opening Point (deg) -
Engine Head - Opening and Closing Lash (mm) -

Exhaust manifold - Runner length from head to first exhaust pipe -
Exhaust manifold - Diameter (mm) - 35mm, 39x30 (inner) ?
Exhaust manifold - Wall Thickness (mm) -

Downpipe - Length from manifold till catalyst - 61 cm ?
Downpipe - Diameter - 39 mm (inner), 51 mm (outside) ?
Downpipe - Wall thickness -

Tiago Freitas (Law_)