Project Turbo Yamaha Banshee
 

Alright I finally convinced my friend to let me build a kit for his Banshee. Its a 350cc twin cylinder 2 stroke 6.5.1 compression if you didn't know. we're using variable jets and a fuel pump for fuel management. The plan is 4-8psi. Here's the big question, will an RHB5 be too big for this motor? I'm not talking about the RHB52. If anybody has the specs for the RHB5 and the RHB52 I'd appreciate it. Also if anybody knows of any good forklift or lawnmower (dixie chopper mainly) turbos

http://www.robietherobot.com/storm/i...nRScompare.jpg

This is the difference between the RHB52 and the RHB5. And I thought the 2 RHB52's I put on my civic were small

Re:Project Turbo Yamaha Banshee
 

OMG, sorry I can't help you with your questions, but holy ---- that thing is going to be crazy! :o I'll test it out in Glamis next weekend for you. ;D
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Re:Project Turbo Yamaha Banshee
 

I figured you'd like this project. I was going to do it to my Banshee but I don't have the money. This project is pretty simple I just want to use the right size turbo. I also need to find an electric oil pump because its 2 stroke

Re:Project Turbo Yamaha Banshee
 

Hmmmm....I wonder if that gear oil is going to be ok for the turbo? Or are you going to build a seperate oil system? A friend of mine just bought a Raptor and he wants to boost it. It's so much easier on a 4 stroke Raptor. It has an external oil tank with lines running to it from the crankcase. That would make things so much easier. He's looking for a kit though. ::) I bet they go for $2-$3000 when you can just make your own for a couple hundred.
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Re:Project Turbo Yamaha Banshee
 

Yeah a raptor would be easier with the external oil tank. I was going to put an oil tank kinda underneath and in front of the turbo and use like a 20 psi oil pump. The Banshee will be easier to tune becuase of less moving parts / less ---- to destroy and I don't need to worry about timing at all.

Those kits are like $2-3000 and I only know of one company that makes them. I'm going to act like I'm buying one so I can get the a/r's of the turbo.

I also seen a complete bolt on fuel injection kit for a Banshee. I'd pay some good money for that becuase that would be badass.

Re:Project Turbo Yamaha Banshee
 

Damn, you're going ot make me wanna buy a Banshee now. :(

You might as well just try to run that turbo you have and see what happens. We're talking about a ~350cc motor and a turbo that spools almost instantly on a 1500cc motor. I think it will work, but it might have some lag. You don't bog a Banshee anyways, so that would be perfect. The top end would be insane. Where does a Banshee rev at? 8000rpm? I'm sure it will spool that tiny ass turbo by 6 or 7 grand.
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Re:Project Turbo Yamaha Banshee
 

I don't have an RHB5 yet, I got that picture from a website. I have another RHB52 but I know that is too big. I'm pretty sure the Banshee's rev above 10,000rpm. Another good thing about a 2 stroke compared to a 4 is that there is twice the amount of exhaust pulses and will probably spool faster than a 2 stroke.

Re:Project Turbo Yamaha Banshee
 

i would go with a 9b (half of a 3000GT/Stealth twin setup) that thing looks to be about perfect for that motor.

Re:Project Turbo Yamaha Banshee
 

http://www.paatving.com/Articles/tur...urboraptor.asp

I found this site with the guy turboing a raptor with a T25. I don't know, maybe give you some idea's. ;)

Re:Project Turbo Yamaha Banshee
 

So which is a smaller turbo an Rhb5, 9B or a T25? Which would be a reccomended turbo?

Stealthmode: Thank you.

Re:Project Turbo Yamaha Banshee
 

you need an IHI off a Chevy Sprint Turbo, damn...you thought that the mazda/subi one was small this is smaller. hell it goes on a 1.0L Sprint....

Re:Project Turbo Yamaha Banshee
 

9b is the smallest easy to find turbo i know of. you can get smaller ones but it's more expensive and harder to come by. maybe a teo4h would work, thats about the size of a 9b. I have one accessible to me if you wanna buy one.

Re:Project Turbo Yamaha Banshee
 

or the pontiac fire fly , good luck finding on tho, i suggest check ebay, maybe ull get lucky

Re:Project Turbo Yamaha Banshee
 

well I just got an RHB5 off a Subaru. If the turbo is too big than we're just going to change the top end of the motor with the 800cc cylinder heads off of a jet ski to spool it.

Now the question is should we use an intercooler? Any reccomendations?

Re:Project Turbo Yamaha Banshee
 

Go find a jetski that has a turbo on it already :p Honda makes one I used to ride it at work. Anyways the turbo was small so just find one out on a lake. Lure the guy in with a cute girl and have her distract him for a bit witha nice long walk and whamo you have yourself a nice small turbo :)

I've heard of pople wanting to use the ones from sunbirds as well.... which are fairly common and rather small.

Re:Project Turbo Yamaha Banshee
 

My buddy is thnking of doing this. His banshee is appraised at $16,800. It has everything, front end doesn't stay down in the first 3 gears with him sitting on the gas tank. Think of what a turbo would do.
If anybody can do it he can, he rides 3 different 9-10 snowmobile for ice drag racing!! It's F@$cking awesome!!!!!!!!!!!!!!.

He says the most common and best fit turbos are from Miata's!! Just a hint. I suggest the 9b to him also.

Re:Project Turbo Yamaha Banshee
 

I'd say an rhb3 thats what came on the turbo sprint also post sum pics of it when you done. I'm thinking of putting a 1000cc bike engine in my 85 honda odessy. but if the turbo thing works put I might put a turbo on it.

Re:Project Turbo Yamaha Banshee
 

http://www.paatving.com/Articles/tur...e283-8340w.jpg
Nice!

Re:Project Turbo Yamaha Banshee
 

You think thats nice...

http://www.hiper-technology.com/gall...2000turbo3.jpg

130 RWHP @ 18psi

Now how the hell can that small ass turbo spool 18 pounds of boost?

http://www.hiper-technology.com/gall.../UAETurbo3.jpg

165 RWHP @ 22psi

Re:Project Turbo Yamaha Banshee
 

You guys are giving me a woody looking at this ----. I even went looking for a little tiny turbo. I need to find something to boost or I'm going to go crazy. I wanted to build a golf cart with a boosted Cr250 motor, but everybody wants like $2000 just for the golfcart. I want one for like $200 without a motor. ---- that would be cool.

I think the only reason that turbo produces so much boost is because the chamber it has to pressurize is so small. We're talking about less than 350cc. I can piss more than 350cc.
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Re:Project Turbo Yamaha Banshee
 

the big question is, will the RHB5 be too big for the motor to spool? I never thought of running that much boost into a Banshee but these guys are doing it on stock cylinders and using the carbs.

Also where can I find an electric oil pump that will flow like 25 psi?

I'm ------- pumped about this project. We clocked this Banshee the way it sits at 107mph. I can't imagine riding this thing with 20 pounds of boost. I'm going to be in heaven...12 second Integra, Twin Turbo Civic and a Turbo Banshee. What more could you want?

Re:Project Turbo Yamaha Banshee
 

Only one true way to find out and I know you know how that is. ;)

I remember someone on this board used a pump from a windshield washer sprayer for the oil feed on their boosted Honda. He said it produced plenty of pressure and it worked fine. I couldn't believe it. I'm not sure if he posted pics of it. I wouldn't think those cheap ass little pumps would handle the heat of the oil. :-\ I guess if it has a completely seperate oil system just for the turbo it wouldn't get too hot?
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Re:Project Turbo Yamaha Banshee
 

---- banshees do 107 miles an hour?!!!Now I deffinetly have to get one 8)

Re:Project Turbo Yamaha Banshee
 

I hope its fine, I'll find out this weekend if the thing gets here by Friday. EastCoast ATV said that they couldn't put enough of a load on their turbo Banshee. The kept regearing it and every time they did, the turbo just hit alot harder when it spooled so the topend is going to be insane.

We did 107mph on the street with a 14 tooth front sprocket and 85mph in the dirt. (Radar gun) It now has a 15 tooth sproket so it'll probably top 110.

Re:Project Turbo Yamaha Banshee
 

To answer the question about 18 psi outta those little turbos, you gotta realiize that its feeding an extremly small motor. PSI is the amount of air that the motor CAN"T TAKE. CFM is the true way turbos should be measuered..

I gotta say those turbo quads are pretty impressive.

Re:Project Turbo Yamaha Banshee
 

THe IHI RBH5, as in the one of a MX6 or Probe, they only flow 190 CFM, ------- tiny, should work alright. I gotta see this when you're done, that'll be awesome.

Re:Project Turbo Yamaha Banshee
 

Do you know the A/R's for the RHB5??

Since this is a 2 stroke motor it has twice the amount of exhaust pulses as a 4 stroke so it should be equivalent to a 700cc 4 stroke motor.

Construction starts next weekend or maybe sooner, its finals week soon so I can't do anything till after that, but pictures of course

Re:Project Turbo Yamaha Banshee
 

women buy atv's

men buy dirtbikes. lol

Re:Project Turbo Yamaha Banshee
 

Geez I thought a tdo5 12 was small. damn. You want it? SOmeone gave it to me but it is way to small. You can have it if you pay shipping.

-David

Re:Project Turbo Yamaha Banshee
 

PM sent ;D

Re:Project Turbo Yamaha Banshee
 

Damn, can't beat a free turbo.

I think I found my new project today. I went to a friends house and he had this goped type thing that looked like a mini-Harley! It was sooo bad ass. I guess the guy he bought it from has a catalog with all kinds of them. I'm thinking of boosting the ---- out of one of those. It has turn signals, horn, head light, disk brakes up front, chain driven, and it's 100% street legal. The speedo goes to like 25, but I'm sure with 10 or 20 pounds of boost it'll do a buck thirty. ;D

I'm going to post some pics next time I go over there.
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Re:Project Turbo Yamaha Banshee
 

2 strokes are differnt, Lots of people are running turbo cummins diesel turbos on 800cc sleds around here. I dont know why they spool because the turbo is about 3/4 of the size of the 800 but ---- do they go!! The only thing I can think of is because 2 strokes waste so much fuel(out the exhast) that the exhast is hotter and still expanding in the turbo?? I had thought of putting one on my escape(polaris 800) but I think a big bore kit will work better.

Re:Project Turbo Yamaha Banshee
 

nothing can beat the power to cost ratio of forced induction.

Re:Project Turbo Yamaha Banshee
 

maybe you should just get one of those electric turbos off of ebay LOL :P

Re:Project Turbo Yamaha Banshee
 

Theres no electrical system on a Banshee besides a stator and I don't think that will produce the power to turn a motor. I'm hoping these enough power to run a fuel pump and oil pump without rewinding the stator

Re:Project Turbo Yamaha Banshee
 

i want to see the other side of the bikes in the pics.

that single pipe conversion is fucked looking..

how do you know where to put the turbo on the pipe? (since 2 strokes run by how the pipe is chambered..)

or since it's all been done before you just copy someone elses design?

i'm really curious.

yeah, you might need to rewind the stator and add a battery to run your oil pump & fuel pump.

or, just a thought, you know those bicycle lights that genorate power via the resistance on the wheel? how about a genorator that runs off the chain..

er, nevermind, bad idea, you wouldn't get any oil / fuel when the bike wasn't moving.. icky.. hrm

Re:Project Turbo Yamaha Banshee
 

1. no I'm not going to copy anyone else's design, everything I do is original.

2. I'm not using a single pipe conversion, I really hate them. I'm using Toomey T5 expansion chamber. Expansion chambers do end and at the end of the expansion chamber is where the turbo will be.

3. I'm not putting a battery on, thats unnecessary. I'll find out if it needs to be rewound after I put everything on and test the efficicency of the electrical system

Re:Project Turbo Yamaha Banshee
 

whtiney, where is the post on your car? i found it once before.. but i cant now.. just wanted to check it out
-rollmodel

Re:Project Turbo Yamaha Banshee
 

If Im not mistaken expansion chambers will be pontless
with a turbo in the system because the turbo is a restriction in the system.The expansion chambers work on
pressure pulses to draw out (scavenge)the combustion chamber
if a turbo is at the end of the expansion chamber that process is stopped. You dont see expansion chambers on
2 stroke turbo trucks.

Maybe I missed something :-\

Re:Project Turbo Yamaha Banshee
 

You maybe right. I was originally going to mount the turbo at the front of the motor and get rid of the expansion chambers until I seen that these guys are still using them and making 200WHP. If 4sillypwr sends me that other turbo I'll try it on my Banshee without the expansion chamber and see which is better

https://www.homemadeturbo.com/forum/...d=9421;start=0

Theres the link to my car. If you can't find it, just go in stats and its always #1 of the top 10 by views ;D