RC51 vs. Superhawk: engine

[Qfactor]

What are the differences between the Rc51 and the superhawk engines?

Honda RC51 Engine:
Engine Type: 999cc liquid-cooled 90-degree V-twin
Bore and Stroke: 100.0mm x 63.6mm
Compression Ratio: 10.8:1
Valve Train: DOHC; four valves per cylinder
Carburetion: Programmed Fuel Injection (PGM-FI) with two injectors per cylinder
Ignition: Computer-controlled digital with three-dimensional mapping

Honda Super Hawk Engine:
Engine Type: 996cc liquid-cooled 90-degree V-twin
Bore and Stroke: 98.0mm x 66.0mm
Compression Ratio: 9.4:1
Valve Train: DOHC; four valves per cylinder
Carburetion: Two 48mm slanted flat-slide CV
Ignition: Computer-controlled digital transistorized with electronic advance

That is all I could find as far as info on the 2. I was researching out of curiosity, I am sure Alex will have more info.

Q

[Qfactor]

and of course another variable:

06 Sv1000s engine
Engine: 996, four-stroke, liquid cooled, 90 degree V-Twin, DOHC, 8-valves, TSCC
Bore Stroke: 98.0 x 66.0mm
Compression Ratio: 11.6:1
Fuel System: Fuel Injection
Lubrication: Wet Sump
Ignition: Digital/Transistorized
Transmission: 6-Speed
Final Drive: 530 Chain

[x2468]

must be some difference. because i always hear superhawks reffered to as superchickens.

first thing i'd do if i had an RC51 would be get some high compression JE or Wiscos. :10.8:1

[Qfactor]

Originally posted by x2468

first thing i'd do if i had an RC51 would be get some high compression JE or Wiscos. :10.8:1

I wonder if the lower compression was part of the "detune" for street use scam...


and 9.4:1 for the superhawk.... Did they plan on turbo'ing it?

any guru's out there?

Q

[Karaya One]

Lower compression so it can run on any pump gas with no issues.

If Honda wanted to Turbo it, the bike would have came with one.

The motors were designed in two different generations, with two very different missions.

The VTR1000 was sport / sport-touring. The Honda version of say a Ducati 900SS. It was never seen as a race bike, though it could do it in a pinch.

The RC-51 was the basis for a homologation issue. It was designed to be able to receive the HRC kits to make it a race bike. It became a superbike.

[benVFR]

The Superhawk was designed in a time before the "no holds barred racebike for the street" craze had really taken off.