vfr 800 moto gp conversion help and tips

hi kind sirs

i am currently doing my research into converting a 98/99 vfr 800 in to a race/moto gp style beauty. any help or tips or information either technical or where to get parts would be helpful.im looking forward to this v4 project as the basis of this engine was the inspiration for the honda factory team.

so far i am thinking:

cbr 954 race front fairing-which i hear should fit straight onto existing mounts??which make?? place to buy

rear fairing i have no idea so far-help needed- i hoping to find something with similar shape to rsv4

get rid of poor standard fork and replace for cbr up side down fork-any recommendations on sizing and direct swap/new clamps needed???

brake lines swapping for braided home made hoses, rear hose to run through swing arm to keep tidy

from what i read the rear sets should need a bracket/mod??

exhaust i was thinking a delkavic stubby as a cheap option but i would like an underseat mod really.what can are making mean sounds???i had a quill on my rsv r which was awesome and would like to get close to that hopefully.

power commander and k and n air filter

thanks for any advice i receive i know you guys will be very kwoledgeable

 

any one??? why no replies?is it cos im chopping it???

 

Nah, sometimes some post get missed in the shuffle. Send a PM to member Mohawk. He's done some cool things to his 5 Gen and I believe he's also in the UK.

Cheers

 

Well then .... a VFR is a top heavy, slow steering, underpowered basis for MotoGP inspired build. If I was going MotoGP inspiration, I would start with an RVT (RC51), add a Spiegel bar kit and luggage.

Now if you love the VFR for what it is and just want to add some MotoGP inspired design elements for giggles, that's a different ball game. In that case, how about these ideas.

The stock, linked brakes are great with braided lines. That is a must do. I also have petal rotors.

This is the first I heard of using a 954 fairing. Do tell us more if you can.

Tink made a great graft of a 6th gen. tail with under pipes onto his 5th gen. Copy that, or go fully custom.

I think Wolf makes a fantastic sounding pipe, but many here love the Staintunes as well. I REALLY like the sound of my Supertrapp. That could be a pretty cool one-off if you did a true custom under tail.

For rear suspension, you could buy an Ohlins or Peske shock to go extreme. If you want performance at reasonable cost, Jamie Daugherty sells a re-valved 929 shock upgrade for $450. That's the route I am going.

JamieD also just released a drop-in cartridge fork kit for $500, that you can diy install. The customer feedback is awesome for JaimeD's fork setups and his new kit gives your stock tubes adjustable preload, damping and rebound. I plan to go that route for my forks. If you just GOTTA un-link the brakes, then get a complete VTR front end and still use the drop-in kit.

For wheels, I say just keep it stock, or do a custom carbon fiber setup. Start with CF Ducati wheels and fabricate a hub conversion. Somewhere on the forum (IIRC) there is a hub conversion write up. The front might just bolt up with the right spacers.

Jose

 

Personally I wouldn't do the underseat mod, it might help with drag or whatever but the lower you can keep the weight the better.

 

Do some research, all the mods you are thinking of have been done to death on this & the other 2 main VFR forums. Forks, bodywork etc. I've done engine mods & carbon wheels, just do some reading. Others have done the bodywork, usually CBR1000RR but any IL4 bodywork will fit the VFR because its much slimmer than any IL4.
Google is your friend

 

Hi Mohawk, i see we are not too far apart, ie i am in Worcester. I see OOTV says you have done some stuff to your 5th gen. What exactly have you done? Have today refitted my forks after a rebuild at Revs Suspension in Stourbridge (K Tech springs etc) also fitted today a Wilbers 641 rear unit, K and N and Power C going on next week. Thinking of braided lines next as well. Any other ideas worth doing?

 

You want to be a GP racer?

I have the complete fairing in my garage to convert to the RC211V type setup, right down to the seat from Tyga for the intail exhaust. Some of it is carbon fiber, some is OEM CBR600RR take offs.

Once installed with under triple clip-ons and painted Repsol style, you'll be a rice racer for sure.

BTW, I'm not joking. I was going to make a RC211V replica with a 4th gen frame and VF1000R motor, RC51 front end and all.

Actually, Its all still in my garage. Want it, make me a deal. I have someone who says they want the front end, but has not made the investment yet.

Larry

 

If bluejudas doesnt want it i might be interested, am thinking of doing the same thing. But offer it to bluejudas first. Got any piccys?

 

The more I look, the more I like the idea of converting over to Marchesini's off a Ducati.

Have a race fabrication shop make a frankenstein'd rear hub by welding pieces from your axle and a take-off from a Duc. That would be good to go!

Jose

 

Have you looked at those Marchesinis? I had a chance to get a set, but first wanted to see if the wheel will fit, brought em home worked the process, I find out there's a difference in off set, besides being extremely tight fitting, still was up in the air as the rims didn't have tires mount on em, but once I lined them up matching the front center line I saw the off set, that made me rethink it. I totally understand what you want, that single nut should be the norm, ala RC45 style.

 

For those in the US, I would recommend staying as far away from Marchesini as you possibly could. Zero factory support of any value, dealers are equally as bad, if not worse. But then again, if you feel that you aren't doing it right unless you are bleeding out of your ears, eyes and nose....knock yourself out.

 

OK, I don't know what anyone wants, if anything.

I have a complete RC51 front end that one of our members is looking at , but has not committed to. 2 RC51 Sp2 front wheels, 2 5th gen VFR rear wheels, with rotors. SOLD

I have a 4th gen frame with a 3rd gen swingarm with rear end and rotors and calipers..

86 VF1000R engine compelete.

CBR1000 radiators (2) and a set of VF1000R radiators, top and bottom.

RC51 gauges.

CBR600RR upper and lower fairings in carbon fiber. Stock belly pan.

Tyga RC211V tail.

Taillights, headlights, ignition, 4th gen gas tank, fiberglass hugger (2). One Pyramid, one custom.

And a bunch of small parts from exhaust can with new CF covers to keys, etc.

I have fitted the engine to the frame and run out of time.

Tell me what you want to see. The front end is in the classifieds now.

Contact me at my email address in my profile for pics.

Or come to my house with a pickup truck and I'll load it all up for one lump sum, far below parts costs.

Larry

 

Do a search against my username for posts I started, loads of good stuff there now. Here's the latest dyno from a couple of months back, up to 112whp. Now have Rapid Racing unit fitted & a TBR full system to fit, hoping to get this up to 120whp.

https://www.dropbox.com/sc/mznotl6aapew49v/AACFkG32Ei9uHhqpj9CWhygsa

 

Safetypro
A vf1000r engine in a 4th gen frame! That's the bike I'd build. Has anyone done it before, where did you get the idea? Pictures?
If I was close I'd be there with a truck.

 

Ok, this is a GREAT new piece of information RVFR.

Now .... in which direction was the offset too much. Was it too far over to the left, or too far over to the right?

If the caliper fitment is tight, there is a whole lot you can do about that.

Jose

 

I did a bunch of searching around and I came up with the following.

VFR = 19mm offset
Ducati = 22mm offset

The above is VERY good news. What it means is that if you mount a Ducati wheel, the center is 3 mm too far to the left. So you now need a 3mm spacer to put the wheel center where it belongs.

When it comes to modifying a hub, that means we are GOOD TO GO!!!!!

First, machine a "donut" flange,that is 2mm thicker than the VFR flange and with properly spaced brake disk bolts and wheel pins. Cut off the VFR flange so the donut can slip over the old axle "pin" and weld it up. Next, fabricate a nifty through bolt to hold the wheel on and ........ Voila! You can now re-install everything and set to tackling the caliper mounting issue.

Nothing says MotoGP like some godawfully expensive wheel bling.

Jose

 

the new bike

 

and this is what she looked like when I bought her yesterday

 

will the cbr 600 stock fairings fit a 99 vfr 800 then??i will have a looking in the classidieds now