Honda VF and VFR

. The bike was also first to utilize a Sprague (one way) clutch.Fact|date=April 2008

.Fact|date=April 2008

In 1982, first year of the VF models, reliability and quality control problems abounded due to new automated production equipment at Honda's plant in Hamamatsu, Japan [http://www.home.earthlink.net/%7Ewrenchtwister/V4hist.html] . Regardless, Honda sold out its first year inventory of Sabres, and the Magnas were not far behind. 1983 was a new year and a new start for the VF series of bikes, seeing the engine revised to correct the problems from the previous model year, and saw the introduction of the V65 and the Interceptor. 1984 was the year the infamous cam-wear problem surfaced in the larger displacement bikes, which, by the time it was corrected, led to eight factory cam revisions over the course of just one year.Fact|date=April 2008

The cam chain-driven valvetrain was later dropped from the VFR in favor of gear driven cams, to help distance the VFR from the reputation of earlier VF engines for faulty cam-chain tensioners that would allow for the tensioner to reach maximum travel, but the chain would still be within service limits . As the tensioner problem faded into Honda V4 history with recent redesigns, 2002 and later VFR engine designs have reverted to chain-driven cams.

version, which dropped the gear driven cams. The VTEC is different from the technology used in Honda cars, where the valve timing varies. On the 6th generation VFR, below 6,800 rpm, two valves per cylinder open and close, resulting in greater fuel economy and lower emissions. Critics, however, say this robs the engine of some of its power.weal|date=April 2008 Above the 6,800 rpm, the VTEC valves open and four valves per cylinder operate. Some critics say that the transition from one mode to another is not smooth, creating a jolt which can be unsettling if it happens mid-corner.weal|date=April 2008

VF models

* Magna
* VF400F(NC13)
* VF500F 'Interceptor'
* VF1000F 'Interceptor'
* VF1000R 'Interceptor'
* VF750S 'Sabre'
* VF1100S 'Sabre'

VFR models

* VFR400 (NC21/NC24/NC30)
* VFR750F (RC24/RC36)
* VFR750R (RC30)
* VFR800 (RC46)

RVF models

* RVF400R (NC35)
* RVF750R (RC45)

External links

* [http://www.clubevfrportugal.com/ Clube VFR Portugal] - Lang-pt|Clube oficial fundado em Novembro de 2007 (Portugal)
*http://www.400greybike.co.uk - Quite possibly the best 400cc Grey Bike site on the net - Check out the forum at http://www.400greybike.co.uk/forum
*http://VFRworld.com - Everything about the Honda VF / VFR , Honda V-4's, and the VFR800 Interceptor
* [http://wiki.vfrworld.com Official VFR Wiki]
*http://dot.com.ph/uncle/vfrhist.html - a more comprehensive history
*http://www.cs.wisc.edu/~john/vfr/ - another great VFR site
*http://www.sabmag.org - SabMag: the Sabre/Magna site
* [http://www.v4hondabbs.com/ Honda Sabre, Magna, Interceptor BBS] - Enthusiast web forum dedicated to Honda V4 motorcycles (1982-present).
*http://www.math.uwaterloo.ca/%7Erblander/moto_long.html - The V4 Files
*http://www.vfrdiscussion.com/ - A VFR discussion board
*http://www.bikersoracle.com/vfr/ - A very active UK based VFR forum
* [http://www.vfrclubportugal.com/forum VFR Club Portugal] (Portugal)
*http://www.honda-v4.com (Scandinavia)
*http://www.ozvfr.net (Australia)
*http://www.vfr.qc.ca (Quebec, Canada)