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VFR800 OWNERS
#1
Bike is sold, i missed the boat on this one Sad

I'm ready to pull the trigger on a 2004 VFR800, Adult 1 owner bike mint with 4300 MI I know TINK and MG own these bikes ( or anyone else with knowledge of this bike) and I'm looking for some input. The post below is in the VFR Forum::


"I'm ready to pull the trigger on a 2004 VFR800, doing some footwork I would apprecite some comments on the chain drive cams and VTEC valve actuation.

VTEC valve actuation

The VFR800 was the first non-JDM motorcycle to use VTEC valve-gear. Honda used VTEC to meet tightening noise and emissions standards and to increase the peak engine horsepower. Based on the VTEC-E system, the simplified motorcycle version of VTEC employs only two of the four valves per cylinder when operating at lower engine speeds. All four valves per cylinder are engaged above approximately 6,800 rpm. This is initiated by an electronically actuated oil spool valve, which send oil pressure to the lifter actuators, which then move the engagement pins into place above the valve stem, allowing the remaining two valves to open. This design allows for variable valve timing as well, since the cam lobe profiles can be made different. After much criticism of the abruptness of power transition, Honda lowered the VTEC activation rpm threshold to 6,400 rpm in 2006. The VTEC disengages two cylinder valves when the engine speed drops again below 6,100 rpm.

Just easier to paste and copy. Is there abrupt power transition on the 2004 model year?? Sorry for putting my first post here but have a very short time frame for purchase, once I own it I will post a proper intro with pic's."

Thanks, Steve

[url=http://s1034.photobucket.com/user/cipolla57/media/VFR_zpsljecxf53.jpg.html][Image: 835859263ee6582f56ef394705678663.jpg]
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Messages In This Thread
VFR800 OWNERS - by CIP57_imp - 04-23-2015, 11:40 PM
RE: VFR800 OWNERS - by metallyguitarded_imp - 04-24-2015, 06:17 AM
RE: VFR800 OWNERS - by Lord Popgun - 04-24-2015, 06:29 AM
RE: VFR800 OWNERS - by CIP57_imp - 04-24-2015, 06:51 AM
RE: VFR800 OWNERS - by Henrik_imp - 04-24-2015, 06:55 AM
RE: VFR800 OWNERS - by DAC - 04-24-2015, 07:50 AM
RE: VFR800 OWNERS - by Tev62 - 09-10-2023, 07:18 PM

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