VFR750 big bore kit in development!

Hi guys.....I'm in the final stages of development of a big bore engine kit for the generation 4 Honda VFR 750 (1994-97). The kit would feature JE pistons and customs sleeves that would take displacement from 748cc to 837cc and would increase horsepower from stock levels (mid 90's) to about 120 horsepower! I'm also working on a flatside carb upgrade kit and a front big brake kit as well. Let me know if you are interested in such kits as I would like to get as much feedback from vfr owners on how their bikes can be improved!
andy
grayband@sbcglobal.net

 

No Shit.....?? Hmmm, whats ya have in mind for cams and head work? you ever talked with Mike Valasco? He use to be into this same thing, I'm sure he still could be if the interests where there. He knows a whole hell of a lot when talking about the VFR 750 Motor. then of coarse what's ya talking about money wise too?

 

anything for us old viffer riders...87 vfr700

 

gonna keep the heads and cams stock...mainly for $$$ purposes...cams and heads would raise the price prohibitively and not do much for performance relative to cost. I'm thinking the pistons oand sleeves will probably be under a grand. not bad for an extra 25+ horsepower!

 

I know nothing about engines, and what effect this could have on the rest of my bike, however I just spoke to my 4th gen, and she is interested.

 

Still say get a hold of Mike at Brothers power sport http://www.brotherspowersports.com/service_request.asp
he is the best at knowing the VFR engine inside and out.
So thinking here you two could offer up some hot stuff.

 

a kit similar to mine was made by two different companies (one in europe and one in canada) about 5+ years ago but one company is out of business and the other company no longer produces a vfr kit. I spoke with several guys who got the kits for their vfrs and they reported zero problems with their bikes after these kits were installed and they were VERY happy with the horsepower upgrade. I made sure to have the pistons made by the best piston company I could find (JE pistons) and the sleeves by a sleeve company that does sleeves for pro supercross, indy car and nascar so I have my bases covered with the quality of the products used in the kit.

 

If RVFR is in, so am I.

 

I actually know mike from my experience working for a major brake company in the powersports industry...your post will be a great excuse to touch base with him again!

 

sorry...not at this time

 

Awe cool, I've spoke with him on this very subject and he's done all my tuning. Back in the day he made one ofs as needed, he also did headers, cams, head work and vales, not sure whats what with the carbs. always thought in todays know that FI could be had with out to much trouble. still in the back of my mind to do this. :biggrin: but he says since the market interests have dropped and Honda changed things and it's been a few years, he hasn't worked one up in a while. I still say it's worth it.

 

Boo Waa Ron, your just jealous cause you can't get a big bore..:wink:

 

No, why would I be jealous of guys that can't do anything with out asking permission? It makes me wonder.......at least this guy has balls......

 

I was going to take my VFR to these guys this coming fall/winter. Was supposed to do it last winter, but passport issues held me up. They don't list the VFR on their webpage anymore, but they'll still do it for you. Their stage 3 kit included dyno time before and after, head porting, and a bunch of other stuff. I suppose you could call or e-mail as a potential customer and see what they did to the VFR that you could sell as a kit.

http://www.holeshot-racing.co.uk/

 

Is the kit still available. I have a 91 tha I would like to pop it in. If so what would the kit cost be?

 

Updates???

 

So... approximately 25hp from an 89cc increase?

Ok, I am going to be a wet blanket here and ask how is that possible without a cam upgrade?

Someone please enlighten me.

 

Normally there's more to it than that. The heads are usually ported and polished up a bit, as well as some balancing of engine internals, such as the crank and rods.

 

I hope I have Norkleboy's permission to post this. I hearby grant him permission to tip those Guamanian laidies of the evening with Yankee dollars.

For the dudes in the PNW, the guy to see is George Dean. There is more to getting horsepower than owning a VFR, two crescent wrenches and a few bucks in disposable income. George, being the honest guy he is might even say, the bucks would be better spent in suspension upgrades.

George Dean