Disable the VTEC valve function

I'm just curious - has anybody disabled the VTEC valve function - by energising it permanently it should allow all 4 valves to work through entire rev range?

Thus stopping the step in power that some people don't like. I assume the computer would be upset and it would run like a dog, but has anybody tried this or alternatively had a VTEC valve stuck open, which would have the effect.

 

I guess I don't see the step into VTEC as horrific as others. I say if it ain't broke, don't try to fix it. You may ultimately do more damage.

 

+1, but that is a interesting thought. If all the valves work right off the bat, I can not imagine how the power delivery will be.

 

+1 & +1.
VTEC transition is actually kind of fun. :biggrin:

 

Less torque makes sense. I'm not considering myself as I don't see it as an issue for me it was just some people seem to be so upset by it they wish they had a gen 5 so I was curious to know if any of these people had tried to disable the functionality. And if so what had the result be.

 

Buy a 5th Gen if that's what you want. Great bike. But so is the 6th. Never ridden the 7th.

 

I want gen 6, it arrives tomorrow and i will love it. I was just curious that's all. It seemed like such an issue for some people and it just occurred to me that someone must have tried to do this. Looks like not though

 

I'd like to be able to put a Gen 5 motor in a Gen 6 frame.

 

Straight Bolt in job ! Some one on the Vforce site has done it. used 6th gen injectors, starter & something else that eludes me at the moment with a 5th gen ECU IIRC.

 

Someone on here has done a highly tuned 6th gen, circa 120rwhp IIRC can't remember his name, but has Dr House as his avitar. Not sure if he locked the VTEC out or not, as I've not managed to get full details from him.

 

Correct me if I'm wrong, but if it is just a solenoid that controls it, a three position switch could give you complete control. On, normal, and off.

 

I think a portion of it works off vacuum, and since the vtec works of hydraculic valves. Will there be a problem at low rev's, it may require more pressure to activate completely.

Found a thread on vfrd, and found out that yes it won't have enough oil pressure to fully activate the valves. Also there are other problems, for example the temperature sensor. it would need to read 150 F to activate the valves,It would probably be easier to weld the pins on the valves.

 

Linky, please.

Anything electrical can be bypassed, but the oil pressure to move the pins, that could be a game killer.

 

The VTEC is engaged by oil pressure, not an electrical connection. It's in the manual... somewhere. LOL

 

Here we go...

VTEC in motorcyclesApart from the Japanese market-only Honda CB400SF Super Four HYPER VTEC,[9] introduced in 1999, the first worldwide implementation of VTEC technology in a motorcycle occurred with the introduction of Honda's VFR800 sportbike in 2002. Similar to the SOHC VTEC-E style, one intake valve remains closed until a threshold of 7000 rpm is reached, then the second valve is opened by an oil-pressure actuated pin. The dwell of the valves remains unchanged, as in the automobile VTEC-E, and little extra power is produced but with a smoothing-out of the torque curve. Critics maintain that VTEC adds little to the VFR experience while increasing the engine's complexity. Honda seemed to agree as their VFR1200, a model announced in October 2009, came to replace the VFR800; which abandons the V-TEC concept in favour of a large capacity narrow-vee "unicam" (i.e. sohc) motor.

Honda incorporated the technology into the NC700 series, including the NC700D Integra, released in 2012, using a single camshaft to provide two timing routines for the intake valves.[10][11]

 

Ignition anyone ?otstir:

 

Disable the VTEC Solenoid Valve - Modification Questions - VFR Discussion

Here is the post one guy claims that is has been done, and seems to have a detail list of the process. Although there is no real proof in this thread, or maybe there was i just didnt read far enough.