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This article has multiple issues. Please help improve it or discuss these issues on the talk page. It does not cite any references or sources. Please help improve it by citing reliable sources. Tagged since October 2010. It contains instructions, advice, or how-to content. Tagged since October 2010. It may contain original research or unverifiable claims. Tagged since October 2010. Honda RVF400 Manufacturer Honda Production 1994 - 1996 Predecessor VFR400R (NC30) Class Sport bike Related Honda CBR400 Honda RVF750 Honda VFR400 The Honda RVF400R (NC35) is a motorcycle introduced by Honda Motor Company in 1994, powered by a V4 16 valve double overhead geardriven cam 400 cc engine and known for its supreme handling capabilities. There were two models, the R and the T, which were mainly identical apart from paint scheme. The RVF (as it was marketed by Honda in Japan) finished production in 1996, though unsold RVFs remained available to purchase from Japanese Honda dealers through 2001. The RVF400R is the smaller sibling of RVF750R (RC45), as the VFR400R (NC30) was to the VFR750R (RC30). The Honda RVF400R was the successor to the Honda VFR400R NC30, which ceased production in 1992. While at first glance there appear to be mainly styling changes between the VFR400R and the RVF400R, the actual number of changes are vast as the entire bike was redesigned with numerous identical looking components being totally different. The obvious differences between the VFR400R and the RVF400R are that the front forks are of the upside-down type and the rear wheel takes a 17" tyre (the Honda VFR400R took a 18"), there are two air tubes that feed fresh air to the area just in front of the air box (this is not a ram air system, the airbox is unpressurised) and the headlights have changed from twin round headlights to twin 'fox-eye' lights (this is one feature not mirrored from the RVF750R (RC45) as the RC45 features twin large round headlights). Unlike the VFR400R the RVF400R was only officially sold new in Japan. The RVF400R outputs slightly less peak power than the VFR400R, but with a stronger midrange. There is a Haynes Manual for the RVF400R. Like other Hondas with gear-driven camshafts, the RVF's engine makes a loud 'whine' sound when operating. The exhaust note of the V4 engine is also different from that of a more conventional inline four. The 400 cc VFR and RVF models share a unique exhaust note with their larger siblings—the VFR750R RC30 and the RVF750R RC45—because of their 360-firing configuration. The RVF400R has a reputation for excellent reliability and good build quality, though not quite as high as its predecessor, the VFR400R. Contents 1 VFR400 to RVF400 changes 1.1 Engine 1.2 Frame and Suspension 1.3 Wheels Brakes and Tyres 1.4 Exhaust 1.5 Dimensions and weights 1.6 Handling 2 Racing 2.1 HRC 2.2 Aftermarket Parts 3 Specifications // VFR400 to RVF400 changes Honda RVF400RT Engine The carburettors were changed, the RVF's carbs featuring a flat slide and smaller diameter (30 mm against the NC30's 32 mm) but claimed to be better flow, the velocity stacks were also changed to allow a straighter flow. The valve timing was changed with the exhaust valves opening earlier and closing later. The engine position was changed with large cast sections of the frame now holding the engine lower down (these lower engine mounting points were unused on the VFR). Frame and Suspension While the front cartridge forks were changed from RWU to USD forks, they remained the same diameter (41 mm) and make (Showa). The frame was totally redesigned, with engine mounting and steering geometry changes. The swingarm while looking identical at first glance is narrower (192 mm against 202 mm) and runs on a smaller diameter spindle (17 mm against 22 mm) with the rear hub and brake mounting points changed. Wheels Brakes and Tyres The rear wheel was changed from 18" to 17". The front brakes remained as 4 opposed piston calipers but the trailing pistons were increased in diameter from 25.4 mm to 27 mm (the leading pistons remained at 30 mm). The Honda RC30 was fitted with a 'Pro Squat Rear Brake Linkage' that linked the rear caliper to the frame via a linkage through the swingarm (reducing rear wheel hop under braking), the NC30 had the swingarm machined to allow a torque arm shaft and featured the cast boss on the frame but the linkage was not fitted (probably for cost reasons) and the caliper was instead held in place with a simple torque reaction arm bolted into the swingarm (it is possible to modify the NC30 to fit the 'Pro Squat Rear Brake Linkage'). The RVF400 has lost all of this, the rear caliper is now held in place by a boss on the swingarm, it is not possible to easily modify the RVF400 to full 'Pro Squat Rear Brake Linkage' as the swingarm would require unmachining). It is possible on the VFR400 to change the rear brake disk without removing the rear hub, it is impossible to do this on the RVF400 as the mounting plate is larger and the entire hub requires removal. Exhaust The exhaust has a number of changes, the main change is that the silencer and collector are now separate and the silencer is held to the frame by one mounting point rather than two. The silencer is now aluminium and held by 3 bolts to the collector. Dimensions and weights The dry weight went up from 164 kg to 165 kg, overall width dropped from 705 mm (27.8 in.) to 685 mm (27.0 in.), overall height changed 1.075 m (42.3in.) to 1.065 m (41.9in.), wheelbase dropped 10 mm from 1.345 m (53.0 in.) to 1.335 m (52.6 in.) Handling The VFR400 is widely acknowledged to be a very good handling motorbike, the RVF400 is more of the same, the main difference being that while the VFR400 likes one line, on the RVF400 it is not a problem to change lines mid corner helped by the upside down forks Overview of VFR to RVF differences The differences between a VFR400(NC30) and a RVF400(NC35) are; - obviously different body work, the RVF400 copies its bigger brother the RVF750 RC45 - The VFR has 32mm carbs vs 30mm carbs on RVF, but RVF has 'T' section vacuum piston as opposed to round section piston, this makes piston lighter and offers more throttle response - The RVF has tuned ram tubes to increase mid range power - The RVF has increased camshaft timing, same lift but more duration and overlap - Intake port/valve seat on the RVF is 19mm as opposed to 20mm on VFR - The frame on the RVF is substantially different to the VFR, RVF clamps the motor in a different position and has more rigind mounting points, it is also a later generation frame design - The steering head angle of the RVF is 25degrees as opposed to VFR's 25deg 20 minutes, which will give slightly faster steering - The wheel base of the RVF is 10mm shorter than VFR - The trail of the RVF is 92mm as opposed to 96mm of VFR - The handle bars of RVF are 10mm higher and 24mm close to rider which will give a more comfortable ride(moreupright) - The fuel tank of RVF is 30mm wider at the rear - The front fairing was wind tested with naca ducts feeding cool air to air box(not ram air), 6.5% improvement in aerodynamics over VFR - Front forks of upside down design, with revised spring rate and dampening, stiffer dampening and spring over VFR - Rear shock on RVFhas integral compression canister, also has revised shock linkage and improved dampening and spring rate - Front calipers are of more rigid design, with about 10% improvement in feel over VFR - Rims are slightly lighter - Rear rim is 17 inch an RVF, VFR runs 18 inch - Rear single sided swing arm is different in its mounting to frame to reduce weight and increase Racing The RVF400 NC35 is still being raced in various classes including in the Manx Grand Prix on the IOM. The RVF has a hardcore following all over the club racing scene, having been a very competitive machine against the FZR400, GSX-R400, and comparable to the rest of the high performance inline 4 400s. This gem of the two wheeled variety is raced hard and fast amongst the last of its kind with AFM for the 2008 season. HRC HRC (Honda Racing Corporation) supply a number of parts to adapt the RVF400 for racing Parts available include: A genuine ram-air inbox (using a scoop in between the radiator and frame, does not use the air tubes). Rear ride height adapter (A number of U shaped plates that fit in between the frame and shock). Oil Cooler (a CBR600 oil cooler can be fitted and the water pump drilled to fit the water takeoff) Jet kit ECU Aftermarket Parts There are a large number of aftermarket parts for the NC35. If an aftermarket full exhaust system is fitted, changing the oil filter may be problematic as some aftermarket downpipes are straight and do not have the bends in them to clear the filter. Specifications Dimensions Wheelbase 1335 mm Length 1985 mm Width 685 mm Height 1065 mm Ground Clearance 125 mm Engine Configuration 399 cc liquid-cooled 90-degree V-four Bore and Stroke 55.0 mm x 42.0 mm Compression Ratio 11.3:1 Valve Train DOHC; four valves per cylinder Peak Power (crank) 53 hp @ 12,500 RPM (stock) Redline Begins 14,500 rpm(With HRC ECU 15,500 rpm) Carburetion 4 x CV 28 mm bore Exhaust system 4 into 2 into 1 Drive Train Transmission Close-ratio six-speed Final Drive Chain Primary Reduction 2.117:1 Final Reduction 2.533:1 1st 3.307:1 2nd 2.352:1 3rd 1.875:1 4th 1.591:1 5th 1.435:1 6th 1.318:1