Bore - 80.96 mm.
Stroke - 77.6 mm.
Capacity – 1598cc.
Power - 185 bhp (est) @7,800 rpm.
Torque - 130lbf (est) @ 7,400 rpm.
Rev limit – 8,500 max.
Min revs 2,000 rpm.
Inlet cam - L1.
Exhaust Cam - BD3.
Cam Buckets - “Long post” Type.
Std Cast Cam Pulleys - Set to 25 lb ft.
Machined Retainer Washers x 2 FB931W.
Cam Carrier Bolts set to - 10 lb Ft.
Full gas flowing to inlet and exhaust tracts keeping port sizes close to standard as Atlantic spec valves require.
Inlet valves = 1.22” dia “short” race length.
Exhaust valves = 1.00” dia “short” race length.
Valve springs 16 x FB412 double.
Valve spring platforms x 16 –SC356.
Valve spring shims - various 10 – 15 - 35 Thou.
Inlet tappet shims - FB907 x 8 ground to 120thou.
Inlet clearance 10-12 thou.
Exhaust tappet shims FB907 x 8 ground to size 70 thou.
Exhaust clearance 12- 14thou.
Triple layer Adjusa BDA / BDD - set to 65lb Ft.
Twin 45 DCOE Webber x 2 on short length Webber inlet manifolds.
Choke size –38.
Mains –150.
Air corr –160.
Emulsion tube -50F9.
Starter jet – N/A.
Pump jet –35.
Needle jet –200.
Float level -12mm closed.
Bleed jet –blank.
Aux venturi -4.5
Trumpet length -65 mm.
ITG air filter assy.
Use 102 - 105 Octane Leaded fuel.
JE Pistons – forged Cosworth BDD full race flat top 20 deg pocket. inlet/exh.
Weight -316 gms each bare.
420 gms inc pin/clips/rings.
Big end caps set to - 41 lb ft.
Farringdon’s forged steel “I” section.
Narrow Journal -5.23” long rod length.
Weight 502- 504 grams each exc big end shells.
Big end shells – 54 gms.
Total piston and rod weight - 976 to 978 gms.
Balanced Steel Narrow journal 12 bolt flywheel fixing stroke 77.6 mm
Main dia - 2.126”-2.1255”
Crank pin dia - 1.9375” - 1.9370”
End float – 8-10Thou
Ford 711M 6015- BA T10 steel block bored to suit piston size.
Block deck height machined to 9 thou above piston @ TDC
Main Caps – set to - 65 Lb Ft
Standard water pump.
New Core plugs.
Oil Pump - Titan/Cosworth - side entry ¾ inch scavenge 5 port.
Set pressure to 70psi hot up to 80-90 psi at running speed.
Use “Mobil 1” racing sythetic or equivalent.
Max oil temp 100 deg c in oil tank.
Water temp 70-80 deg c.
Warm oil to 50 deg c before revving over 7,000 rpm.
Sump half trench steel dry sump pan set bolts to 5-7 lb ft.
All Gaskets used are comtec layer composite coated type.
Spark plug type – NGK-BPR8ES - set gap to 0.25”
Tighten to 14/16 LB ft (use graphite grease on thread/seals)
Lucas electronic breaker less pick up type.
Side entry BDA type distributor cap.
Time @ 32deg advance @ 5,000 RPM.
Exhaust manifold primary temp – 600 deg c.
Firing order 1-3-4-2
Steel lightend flywheel 7 ¼” Race Ultralife 12 bolt fixing
Clutch spline 7/8” x 20
Cluch Plate AP Racing three Paddle.
Cluch Pressure Plate AP Racing.