Just so you guys don't think that I am prejudiced against turbos, pics of another project follow. 5 psi at 6000 RPM, 22 psi at 11000 RPM. How long it will stay together who knows. I am really surprised that it came together the way it did. My son did most of the work. ~$50 spent on the turbo conversion, including the turbo itself.





Normally Aspirated he has run a best of just under 8.0 in the 1/8th, but is hoping to get in the low 7s with the turbo.

He is hoping to stay closer to mine.

Runs low 6.4 to 6.7 range, depending on how ballsy you feel on any particular night.


Runs consistant 7.3-7.4s over and over. He might be able to take ol' green.

Enjoy,
Aaron

 

that's pretty cool, what kind of a bike is it? What did you do for fuel mangement?

 

The bike is a '90 FZR600 that we had built over Christmas. The whole bike (in boxes) cost $300.

Fuel managment, though crude, utilizes a flow through on demand carb on the inlet side of the turbo. Basically, as the turbo draws more flow, it enriches automatically. It utilizes the factory carbs fir fueling under vacuum, but has the enrichment carb for the boost conditions.

I am pretty amazed that it all works. We are looking for a wastegate to limit the psi to about half of what it is currently making. It has no IC.

 

ummmm, did you just say that you weren't running a wastegate on that???

 

No wastegate at the moment. It really needs to be limited to about 13 psi with 11.5:1 scr.

 

very fast and cool. does the turbo hush the motor a lot>?

 

perhaps use a seperate fuel tank and run methanol through the enrichment carb.. should help the IAT's and add some power to boot and help fight off detonation with that high SCR. is there anything done to the OEM carbs to keep pressure from pushing into the jets and pressurizing the fuel bowls? just curious or have you pressurized the bowls externally to match the intake tract boost conditions? very interested in this setup.. sounds like a vry fun and cool toy!

Chris

 

Chris,
No real changes to the factory carbs. They still supply some fuel, but not near what they were doing without boost. That is a good idea about "juicing" the front end carb with MeOH.

On my GSXR1000, I never had to worry about the carb issue as it was fuel injected and had four additional injectors in the bonnet over each of the TBs. This was all controlled by an aftermarket supplemental injector controller. With this set-up, you could easily get 270WHP out of a bike that weighed 360 lbs. There were some guys who had stepped it up to 330WHP still with the factory engine, and a few who had built motors that came real close to 500WHP. All out of a 1L engine!!!

These things are wicked to ride. They will stand up on you in a heartbeat. You typically shortshift 1st at about 7K and 2nd at about 8.5K, then run the rest of the gears up to 12.8K. The base turboed bike will run 8.8-9.1 in the 1/4 if you have the right rider (read as BIG *****).

I have been looking into a chromoly wheelie bar built that stretches ~5' past the rear wheel and lets you leave the line at ~9K with TRE and run up in the early gears without standing the bike up. It is strictly bolt on.

If you ever get tired of four wheels, there is always the challenge of one wheel ....

Aaron

 

I would definately like to put a hairdryer on a bike.. I used to ride quite a bit.. and raced motocross as well.. my last street bike was a 600 F2.. after a good spill due to some jacknut making a left hand turn in front of me and everything going in slow motion and having time during the spill to really consider I was about to die, I kind of decided to put my attention and speed addiction into cars.. hence joining my fathers passion for vettes. but I wouldn't mind picking up a cheap 600 and toying with it.. but I have a million car projects to complete with our 5 vettes and I am already so time limited, another item on the list would just be depressing... but I will definately keep up on tabs with your sons progress and would like to get some updates as they are made!

Chris