Im Gonna Need Some Serious V4 Power - Help me out

Heres the deal. Im using the a 2000 VFR engine as the base motor for my project, a Reverse Trike. Since it is not going to be in a bike, or have legs stradling it, I have plenty of free space that wasnt available before. Free space to install, say, a turbo.

During my Christmas break, I plan on finishing the trike, and keeping the engine NA for now, so that I can worry about more pressing matters. Once I get the suspension tuned, and get everything else running tip top, then Im gonna delve into the engine.

A buddy at my shop has a 700hp Supra, but hes only running low 11s, so hes getting a bigger turbo, bigger tires, the works. Should be a 9s car when hes done. We race alot, and I dont want him blowing me totally out of the water on speed (my trike should be able to out-handle the hell out of him though). Right now, hes got 1hp for every 5.17lbs. My trike is estimated to be 1hp for every 10lbs. This is shameful. Now to the meaning of this post.

Does anyone have any previous experience with forced induction on these engines? I saw the centrifugal supercharger kit for like $5k, but I got plenty of turbos laying around the shop, and we can custom make intakes and manifolds. This is why I was thinking of turbocharging it.

Alternatively, what are basic bolt on mods that might prove beneficial? Space is no longer an issue, so feel free to think outside the box with me.

Thanks! Check it out Here:

Reverse Trike | Facebook

 

Sounds like a cool project!

So is this going to be like a Campagna t-rex?? There isn't a whole lot in the "bolt on" department for increasing the V4's power. Expect a max gain of a few HP with your typical intake/exhaust mods and a decent PC tune.

I dunno, with the scale of the project I'd personally just go after an engine that outputs what you want from the get-go instead of adding forced induction and all the headaches. Just my .02

 

if youre turboing the vfr engine, you are deffinetely going to want to use all that extra space for a full size cooling system and intercooler. vfr's and vfours in general run notoriously hot, and turbos build even more heat. with a compression ratio of 11.6 to 1 you better be careful. id like to see the turbo manifold youre gona need to route all the exhaust pipes together, and intake manifold...
id shoot for about 180 hp max, i think a t25 turbo is youre best bet.

 

How about running nitro and a turbo for each cylinder?

 

Thanks for the heads up guys. I'll look into a T25, and I planned on having extra space and air ducts for the cooling of the engine and such. My trike isnt gonna be like the T-rex, but kinda similar I guess.

I hope this isnt gonna be like my car forum. If I say anything about upgrading my 3000GT, the guys on the forum just say "Get a different car." I dont mind trying stuff, and getting the experience that comes with failures. Having said that, I like to go into a project with as much knowledge as I can, which is why I am asking the VFR community many months before anything happens.

I have 4 other bikes, and since I used to work at a bike shop, I hear about cheap motors all the time. I love the sound of the torqy, ballsy V4, and thats what I wanted to keep. I didnt want my trike to sound like a rice rocket, and the VFR seems to be a pretty solid base. If I dont get the numbers Im looking for out of it, then I can worry about swapping engines, which really wont be hard at all. Just a matter of making new brackets and hooking it up.

I'm also contemplating making a second one. Using the experience and knowledge from the first build to make a super bad ass single seater race trike. I got a lot going on up here

 

no replacement for displacement.

that said, it sounds like your car & rider / driver will weigh about 1000#....Si?
any way to lighten that? wheels / tires?
friends car = 1 hp per 5#
VFR & rider = 1 hp per 7# or so
800 cc MotoGP bikes with unlimited budgets will put out about 200 hp max (no turbo). it would take that for you to match your buddy's ratio.
the guy who was developing the Blower for the VFR (A&A Performance) ran out of gas at one point in his testing - that is, the injectors wouldn't pump enough fuel through to keep up with what the supercharger could push. so maybe you look into bigger injectors as an idea.
that about empty's my bucket....good luck!

 

At any rate whether you turbo super charge, of even put nitrous on it have fun and good luck with the build.

There is an older 80 model yamaha (I think) that is turbo'd . I took it for a ride back in the day(yeah I said that) it was an ass pucker fore sure...

 

Bigger injectors are usually a must for forced induction. My trike is estimated between 1000-1100lbs with rider. I dont know if I want to lighten it a whole lot, because I need to have some weight on the tires, or else traction will be reduced. Im still reading books on Formula 1 cars and talking to old Indy car teams to make my trike handle like a dream. Like I said, once everything is complete, then I will decide if I want to turbo or engine swap. I just LOVE the badass sound that thing had. I would start it up just to listen to that sucker rumble while I was working on other stuff.

Yes, the Yamaha that is Turbo'd is the Seca Turbo. I have the 750 version with a 650 Turbo. Its on the to do list, but it got trumped by the trike cause I got other bikes to ride. Im also restoring a 97 TJ Wrangler and making it into an muddin machine (and something to haul the trike around in, cause the 3000 just wont cut it)

 

if 1 VFR is good, 2 is probably better......
ever see dual motor Karts?
I'm guessing that would about double your horsepower.
JAT.

 

For Crupsky

Dude. Nitro not nitrous. Nitromethane not Nitrous Oxide. Look up superchargers and turbochargers too before you make yourself really look like you should be wearing a pointy hat 24/7

Shifting gears. I am wondering about this "reverse" trike. WTF is a reverse trike?

Has "go for a ride" returned ?

 

Need lots of pictures!!!!!op2:opcorn::canada:

 

Look at the facebook page for an idea. Or you could google reverse trike. Its basically 2 wheels in the front, and one in the rear. Which allows for more handling ability. A Corvette ZR1 pulls 1.1G's on a skidpad. The trike Im modeling should pull about 1.55G's.

Who are you asking here: Has "go for a ride" returned ?

 

I only scanned your post but either here or on VFRD there'sa thread of a guy producing S/C kits for the Gen 5 that would be a good place to start. Did someone mention that yet?

 

you might want to look into the late model vtec fuel system (06+). they use the same injectors as the cbr1000rrs and are capable of keeping up with some serious horsepower. see if toro knows how much duty cycle percent the injectors are at on his sc vtec. that is, how much the injectors have left before they cant keep up with the fueling demands...

 

Someone has more money than good sense.

 

I disagree. If you checked my page, you'll see that I am keeping a register of all expenses for the trike. I got tired of all the panzies I know coming up with excuses as to why they dont want to try something new. The biggest excuse was cost, so Im trying to show that you can build something unique and sporty for less than 4 grand. I appreciate your input though.

I'll look into the other fuel systems. I got plenty of time, and I dont believe in rushing a project, so I'll keep this in mind.

 

Dont worry, Im an honest guy. Estimation puts me right at $3400, but I left a 600 buck gap for things that I didnt take into consideration.

 

I didnt notice that you added more to your post until now.

"Unique" and "sporty" are subjective and relative terms. Of all the people that I have showed my plans to, I have only had one guy call me retarded. I figured with the niche of truely custom vehicles, I would have a lot more criticism. So far, I've had more girls wanting to go for a ride in a trike that isnt even built yet, than on the VFR as a bike (and there was plenty). Since I am not going to sell or market this vehicle, the only person it has to please is me. I try to do things tastefully, and I havent built anything that is universally disliked.

Like I said, Im an honest guy. That register isnt so much for everyone else as it is for me. Unless I keep track of everything I do on my credit card, Im terrible at keeping a register, which is sad because Im a BA major.

I appreciate the help. I think I could use knowledge more than parts, but I wont turn down good tidings.

 

Well, got it road ready and done for what I need. Total cost put me at $3455, just at my estimation, and less than my goal. But thats only what I spent. I sold $1376 worth of stuff off the VFR, still got more stuff to sell, and kept the important parts I need. So Net total for the project is $2079 spent. Not too bad for my first totally custom project, eh?

So what does that make me on the Pansy scale, VFourBear? BTW, I stare at your avatar pic for a couple seconds everytime I scroll past your name somewhere.