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Stage 4 Motor Package 1550cc 220 to 250hp (24v)

Stage 4 Motor Package 1550cc 220 to 250hp (24v)
Brand: Big CC Racing
Product Code: Stage 4 Motor Package 1550cc 220 to 250hp (24v)
Availability: In Stock
Price: £5,520.80
Ex Tax: £4,599.00
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The Stage 4 motor package uses the 84mm bores but a rewelded Gen 2 Crankshaft on P/X that has a 7mm stroke against a Gen 1 engine. Oversize valve springs are recommended & included in this package as are upgraded 12mm cylinder bolts requiring case machining. Minor mods to the frame engine mounts may be required as this package uses a long rod combo for added torque.

  • Race Cams
  • Adjustable sprockets
  • Ported & flowed head
  • Race cut valve seats
  • Valve stem seals
  • Lapped head & block
  • 3 ply head gasket
  • 84mm (1400) High comp pistons
  • Bore & replate block
  • Heavy Duty cylinder bolts 12mm
  • Crankcase machining & head & block
  • Base gasket
  • Heavy duty valve springs
  • 1mm Oversize inlet & exhaust valves
  • 7mm Stroker Crankshaft (Gen 2)
  • Big end bearing shells
  • Main bearing shells
  • Lower engine gaskets seals & O rings
  • Labour to strip inspect & rebuild complete engine

Engine horsepower varies depending not just on what type of exhaust & induction mods but also on how the engine is built for you as a customer building to your usage. Street bike applications are deliberately built with milder race cams so not to wear the valve train out & with lower compression so they can start easier & use unleaded fuels safely. On the other hand full drag race motors can be very high compression with super large cams etc. This is why the power can vary so much depending on applications. For example a 1400cc engine that creates 215hp would not be a very reliable street bike or easy to start on 12v. Equally we have built 240hp 1600cc engines as street bikes that have stayed reliable because we have kept them on a lower compression & without radical cams. For race car power levels a power drop is normal due to the transmission losses applicable to that cars final drive / transfer box / axles etc. However our power levels are all quoted at the tyre as stated. The important thing is we build the engines to suit you & your usage whether land speed bike, circuit racing car, drag racing or road bike etc. Give us a call & we can fulfill your needs.

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