ehacker01

I want some info from you guys on what turbo to use on my bike. None of the harley turbo kit manufacturers will give up any info on what size turbo they use. The bike is a 1700cc v-twin Yamaha road star warrior. it is fuel injected and makes 80hp and 100 ft/lbs stock. is a t3 too big for this? Patrick racing says their kit for my bike at 8 psi will make 120 hp. Any good ideas on what to use for this bike? I know that some of the hayabusa kits use the t3 but then again they make way more hp but only with a 1300cc. I attached a picture of the bike for any of you that are interested

bad_turbo

Innovative Turbo will know what to use on your bike. They turbo bikes all the time. Give them a call: 805.526.5400

aziroc

well. i have a yamaha R6.. which is like the total different field *import/domestic* but check out a company called Mr. Turbo. i know they make ALOT for sport bikes.. sorry i dont know they phone # or web site, but im sure if u do a search u will find them.

MrDude_1

before you look into a turbo, you might want to look into yamahas "stage II" and "stage III race kits"

they come with new heads, intake, exhaust, cams, ect.. along with a updated ECM and should put you over the 110 mark on that alone.


and if you put out only 120hp (even if its at insane TQ levels) id be disappointed... nice big bike like that should be atleast 170.

ehacker01

yeah but the speedstar kit costs thousands and I know I could make a turbo kit that would make more power for way cheaper.

middlebird

There are several turbos that would work well on this bike, I am working on turbocharging my ZL900 Eliminator and have done quite a bit of research on turbos. You may want to invest in a book called Motorcycle Turbocharging, Supercharging and Nitrous Oxide by Joe Haile. Excelllent book with a lot of good information.

You may want to go to a boneyard and try to locate a mid 80s Chevy Turbo Sprint. This car uses a IHI RHB3 turbo and the cars displacement is 1300cc, therefore the CFMs would be similar for a mild boost application on your Roadstar. Or you could be different and work on a twin-turbo and pick up (2) Hitachi Turbos that came off the old Kawasaki Z900 Turbo bikes (HT03). For bigger boost apps however a T3 or similar with the right compressor ratio would make the bike a smoker but then you need to worry about detonation.

There are many different trim levels for the T3 and similar turbos so selecting the proper one is imperitive.

Beast5spdGTA

Check garret and see if they have compressor maps, learn to read them too and figure out your airflow needs. I don't think any junkyard T3s are going to be your best choice. Specially if your engine only makes 70 hp NA. So I assume your looking for ~140-200 hp. Maybe a junkyard T25 from JDM nissian SR20DET engines. A little smaller than a T3 from my understanding.

I know of 600cc 4 cyl bike engines runing GT12 (I think) and a VNT14 or something along those lines.

83 Crossfire TA

iTrader: (2)

You've got a lot of choices in that size range. The smaller T3's would work, as would the mitsu TD04's and the smaller TD06's, even something like a holset HX25 (I can't imagining packaging that one though). The sprint turbo will be too small for that thing. Packaging (especially dealing with the intake pulsing of the v-twin layout) will be much harder then finding a turbo that will work with the engine.

As a side note I've always been an HD bigot (probably doesn't hurt that I worked for a dealer what seems a lifetime ago), but I'm really impressed with the newer Yamahas… how do you like it?

BOTLFED

My brother used a stock turbo (14B) out of a stick DSM on his CBR 1000.. It works awesome.. I would recommend the same for you, especially for the compact size...

The theory he used basically to pick this turbo out for his bike, is that it is half the size of the 2000cc DSM motor, but rev's to twice the RPM, so it should still stay somewhere in the efficiency area of the turbo.

Your bike is a lot closer to the DSM's stock displacement and probably won't be revving as high as my brothers CBR. I think it would work out very well..


Here are a few shots..









Cheers,

jon_volk

thats a slick install!

FSTFBDY

iTrader: (33)

That CBR is bad ***

ehacker01

crossfire ta- I love it. I looked at a few HDs but they aren't worth what you pay for. I got way more bike for way less. Are the t25, td04, and 14b water-cooled? if so is ther a way to bypass the water and just use oil? do they have internal or external wastegates. if they are internal what would I do limit my boost to 6-8 psi?

ehacker01

I forgot to mention that my bike redlines at 5200 if that makes any difference. with the t25 what would I do to control boost? would the stock internal wastegate be good enough?

anesthes

iTrader: (12)

Hrmm. My CBR 954 is 954cc, and 155hp. I can see why you want a turbo.

Good luck. Sounds like a fun project.

-- Joe

ehacker01

just thought I would give you all an update...I have decided to go with the t25

83 Crossfire TA

iTrader: (2)

To answer your earlier question, water cooled or not is more decided by the OEM app, most of these turbos have CHRA's that came both ways. What you have to be careful about is that some water cooled CHRA's can be run without water and some can't.

WRT to choosing a turbo, I'd go with the smallest that will move the air to make the power you want to make. A smaller turbo will spool faster and it's easier to upgrade later if you really need to (easier to swap then most performance parts and in most cases can be resold to recoup most of the purchase price, unlike something like a cam…)