Mods. Mods and more mods!!

All,

Just picked up an '07 VFR and getting my mod ideas together. I had an '02 VFR and had done the following mods:
1) Flapper valve disconnect IIRC, this valve cuts airflow at around 5K RPMs for noise requirements by blocking off part of the airbox intake.
2) Smoke windscreen (Zero Gravity, IIRC)
3) Staintune exhaust (orig $500 now $1200 -ouch!!)
4) Removal of mud flap, huffy reflectors, etc.
5) O2 eleminator plug...tells your o2 sensor that all is right so you are not tripping the F1 light...but I can't remember why I had that installed...perhaps it was due to the Staintune exhaust?

What else have all of you been doing as far as mods to your VFR's?

Also, has anyone thought about (or already done) modifying the cooling fan to come on earlier - like 205 - 210 deg. Coming on at 220 deg is not soon enough on a hot day...I wonder if the sending unit could be switched out for a lower temp.

And last but not least, are many of you going with a full exhaust system and, if so, is it really worth it?

Thanks for the input!!

 

I am currently trying to cross reference an auxiliary fan switch that has the same thread pitch and length of the stocker and comes on around 205. most modern sportbikes make maximum power in the 92c-96c range (197.6f-204.8f). once the engine coolant temp passes this range the ecu begins to enrichen the fi mixture as sort of a "self preservation mode", this in turn causes irregular idling and rough partial throttle opening response, as well as, loss of horsepower.

I still have not been able to find the thread pitch and length of the stock fan switch......i am still trying to determine the manufacturer and manufacturers part number so that i can begin cross referencing to find a different unit. i actually started working on this two days ago...funny you brought it up.....

 

Thanks MD,

I was hoping not to have to pull the switch out of the radiator, otherwise i would have to drain the system and go through that whole exercise, if it ends up that I have to do that to accomplish this, then that's what i'll do.

I am installing an upgraded shift star and detent arm this week and will probably take a look at it then, if i haven't already located the info.....i'll keep you folks posted....this could take a bit of footwork........

 

I wouldn't mess with the airbox flapper valve. I haven't read a post yet on VFRWorld or VFRD that said this does anything other than make more noise.

In fact, is there anyone out there who has done this mod & has anything to say about it?

KC-10 FE out...
lane: :usa2:

 

Guys, thanks for the great feedback!

NoCalDude, please keep us posted if you do find the replacement fan switch (I'm assuming we are talking about the temp sending unit that screws into the radiator)? Santa Rosa - nice place - had a grandmother who lived there for many years.

As for the flapper valve - that's been an on-going topic of debate. Back when I had my '02 VFR I did have it disconnected and thought I'd picked up a very small gain in hp, with no lower RPM losses...but it was really not all that much. I probably will plug the vacuum line the next time I access the airbox. Thing about the flapper is that it is wide open under lower RPM's - it only restricts airflow at the 5K RPM level (for noise requirements).

 

I am currently trimming minute amounts of rubber off of my tires a mile at a time in hopes of reducing stress and improving riding technique.

 

I did it and don't think it makes any difference. With ear plugs in I don't even hear any noise difference.

Action

 

I JUST ordered one of these today because my fan seems to come on at varying temps - I though the switch may be going bad. (I also ordered the VTR fan, all online - we'll see if it shows). It should be here in a couple of days. If I can figure out how to measure it, I'll post the specs.

I would like to find a lower temp switch though.

j