Engine Build ServicesPerformance
Ducati Engines
Epicycle can re-engineer your 8 valve Ducati
into a road rocket, or turn it into a true fire-breathing monster. The
following specifications are available: "Circolo", "Sportivo" , "Forza",
or "Elefante 890"
"Circolo"
Specification
Performance Graphs
Suitable for:
888 or 916 motorcycles used for "Sports Road" riding
or "Ride Day work".
No machining of crankcases is required.
The End Result:
Moderate increase in horsepower throughout rev range
.
Civilised power delivery for road usage.
Engine reliability is in no way compromised.
Normal service intervals may be observed.
Approximate peak power 122-125 HP
How it's done:
| Camshafts: |
"Circolo" camshaft set.
Manufactured from high tensile steel with tough
Gas Nitrided surfaces.
| |
LIFT @ valve
|
DURATION @ 1mm lift
|
|
Primo Inlet
|
10.95mm
|
304*
|
|
Veloce Exhaust
|
8.95mm
|
294*
|
|
| Valves: |
"Corvino" valves.
34dia. Inlet 30dia. Exhaust.
Manufactured from imported blanks then Tufftrided
for long life and low friction.
"Corvino" valves feature our own design collet
groove for "Duro" collets |
| Heads: |
Standard valve seats and ports. Seat throats enlarged
& polished to suit larger valve sizes. Heads machined to increase compression. |
| Pistons: |
Standard 94mm pistons with valve pockets machined. |
| Crankshaft / Rods: |
Dynamically balance standard crankshaft & connecting
rods. |
| Exhaust System: |
Recommended to be used with big bore headers &
silencers (min 50mm) although standard system may still be used. |
| Fuel System: |
"Twin Jet" Dual Injector Conversion
using standard 50mm throttles. |
| E.C.U |
EM4 Engine Control Unit.
PC programmable. |
|
|
"Sportivo"
Specification
Performance Graphs
Suitable for:
Converting 888 to 926cc or 916 to 955cc. used primarily
for track use with occasional road use.
Crankcases machining required except for the 916SP.
The End Result:
Large increase in performance over Strada.
Suitable for club racing or spirited road riding.
Reliability is not compromised.
Slight decrease in kilometres between service intervals.
Approximate peak power 130-135 HP
How it's done:
| Camshafts: |
"Sportivo" camshaft set.
Machined from high tensile steel with tough Gas
Nitrided surfaces.
| |
LIFT @ valve
|
DURATION @ 1mm lift
|
|
Primo Inlet
|
10.95mm
|
304*
|
|
Primo Exhaust
|
10.1mm
|
288*
|
|
| Valves: |
"Corvino" valves.
35dia. Inlet 31dia. Exhaust
Manufactured from imported blanks then Tufftrided
for long life and low friction "Corvino" valves feature our own design
collet groove for "Duro" collets |
| Heads / Ports: |
Valve seats replaced with heat treated iron seats
to suit larger valves
Combustion chamber profiles machined.
Ports are fully machined & polished ensuring
accurate dimensions & volumes.
Ports sized to match valve diameters. Head gasket
faces machined for increased compression. |
| Pistons: |
This engine specification requires the fitting of
96mm pistons & cylinders.
Valve cutaways need machining. |
| Crankshaft / Rods: |
Dynamically balance standard crankshaft & connecting
rods. |
| Exhaust System: |
Must be used with big bore exhaust system (50mm
min) |
| Fuel System: |
"Twin Jet" Dual Injector Conversion
to standard 50mm throttles. |
| E.C.U |
EM4 Engine Control Unit.
PC programmable. |
|
|
"Forza" 955
Specification
Performance Graphs
Suitable for:
Converting 888 & 916 Strada's to Racing use.
Not suitable for road use. Crankcase machining required except for 916SP.
The End Result:
955cc. Large increase in power, particularly in the
8000 to 11000 RPM range.
Engine reliability is good as long as overhaul schedule
is observed.
Approximate peak power 138/140 HP
How it's done:
| Camshafts: |
"Forza" Camshaft set.
Machined from high tensile steel with tough Gas
Nitrided surfaces.
|
Lift @ valve
|
DURATION @ 1mm lift
|
|
Potenza Inlet
|
12.1mm
|
303*
|
|
Primo Exhaust
|
10.1mm
|
288*
|
|
| Valves: |
"Corvino" valves.
37dia. Inlet. 31dia. Exhaust
Manufactured from imported blanks then Tufftrided
for long life and low friction.
"Corvino" valves feature our own design collet
groove for "Duro" collets. |
| Heads / Ports: |
Valve seats replaced with heat treated iron seats
to suit larger valves.
Combustion chamber profiles machined.
Ports are fully machined & polished ensuring
accurate dimensions & volumes.
Ports sized to match valve diameters.
Head gasket faces machined for increased compression. |
Pistons:
Crankshaft / Rods: |
This engine specification requires the fitting of
96mm pistons & cylinders.
Valve cutaways need machining.
Carrillo rods. Dynamically balance standard crankshaft
& connecting rods. |
| Exhaust System: |
Must be used with big bore exhaust system (52/54mm
min) |
| Fuel System: |
"Twin Jet" Dual Injector Conversion
to standard 50mm throttles bored to 54mm Corsa specifications. |
| E.C.U |
EM4 Engine Control Unit.
PC programmable. |
|
|
"Elefante
890" Specification
Suitable for:
Converting 748 SP's to 890cc
The End Result:
890cc. Large increase in power, particularly in the
6000 to 9000 RPM range.
Engine reliability is good as long as overhaul schedule
is observed.
Approximate peak power 125 HP
How it's done:
| Camshafts: |
Standard camshafts |
| Valves: |
Standard valves |
| Heads / Ports: |
Standard heads |
| Pistons: |
This engine specification requires the fitting of
96mm pistons & cylinders.
Valve cutaways need machining. |
| Crankshaft / Rods: |
Dynamically balance standard crankshaft & connecting
rods. |
| Exhaust System: |
Standard 748 SP |
| Fuel System: |
"Twin Jet" Dual Injector Conversion
to standard 50mm throttles. |
| E.C.U |
EM4 Engine Control Unit.
PC programmable 1.6M. |
|
|
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