Engine valve train recommendation
Hello, any advise with this?
I am bulding an engine somehow similar to a Super Vee engine. And in doubt with which cam/compression ratio/valve size configuration to use. (Mexican f1800 series based on formula vee chasis)
Rules say it shold be 1.8 vw 8v watercooled with oem stroke/bore. Bocar 34 pict 3 carb with 1.6 manifold with 33 mm restrictor plate. Camshaft is free of choice as the valve sizes and compression ratios. Head can be mechanical or hidraulic tappet.
All this leaves a lot to think, no one has achieved big difference in power. Winning engines use 10 to 1 compression with 38x33 valves and 49c oem camshafts slightly modified.
This is the technical data:
DESIRED ENGINE PERFORMANCE:
MID RANGE FOR TRACKS WITH LOW/MED SPEED CORNERS.
ENGINE APPLICATION
VOLKWAGEN water cooled OHC 1.8 4L 8V
Oem BORE and Stroke
Intended for sprint races.
Description
Formula 5 open wheel car for Race ar for track/circuit
Compression Ratio
12.3
Vw type 1 swing axle - Differential/gears Ratio
1st: 3.80
2nd: 2.08
3rd: 1.26
4rd: 0.89
4.375 DIFF
Fuel
91 octane pump mexico unleaded
Carburetor CFM
Solex 34 pict 3 venturi removed with 33 mm restrictor
Intake Manifold
Oem from 1600 cc engine for solex 34pict5 carb
Valve Head Diameter
Intake 1.496 exhaust 1.295
Ported/Amount
Not ported
Car weight
1279.8 pounds
Minimum and Maximum RPM From
3000
Minimum and Maximum RPM to
6500
Stall Speed
1300
Tire Size and Diameter
195/55/15
CURRENT CAMSHAFT INFORMATION
049 109 101 C
Type Of Tappet Design
Mecanical or Hydraulic. Please reccomend
Advertised Duration Intake
Oem
Advertised Duration Exhaust
Oem
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