GS(X)1100E turbo EFI

[TurboChris]

Very nice........

[lecroy]

What scale is on the boost gauge?

I have never had a bike build boost from that little wick of the throttle, especially with no load on it. Seems strange. Super balanced and undersized?

Good to finally hear it run! Good job!!

[ArttuH]

The boost gauge is up to 15 psi, so in the video it jumps around 3 psi. Well, that's a VNT turbo so when there isn't boost the vanes are closed and it acts like a very small turbo. That's why it builds boost so easily.

[posplayr]

Nice Bike

The link you provided was pretty slow but I was able to see the video. That turbo seems very well behaved. Much smoother than I was expecting. It will be nice to see it tuned; I bet it is really fast. \\/

Posplayr

[lecroy]

I noticed your link today and went to your website. Makes sense now. We called these VGTs for Variable Geometry Turbo. When I was in automotive we were working with New Departure Hyatt?, division of AC Delco, who was working with a company in Texas that came up with the idea. I saw some of the first prototypes and was thinking, cool. Theirs had another feature, no external oil system. At Cummins, there were no wastegates and no VGT. The turbo had to be matched to the motors.

3PSI is freekin incredible! With my current setup, I have to hold the bike on the 2-step for several seconds for it to start to build boost. It makes a shade over 2 PSI now. With my small F/B Rajay, I could make about 7PSI with the same settings, but I could not feed enough oil into it to keep it alive and at 18 PSI it was on the virge of overspeed. It also had other problems where I could drive thru the peak torque curve very easy. The setup I have now, I see no limits. I think you could shift at 14,000 and be safe with it! Crazy. I guess Terry ran the combo to 50PSI when they were setting all the records. They had to rebuild the turbo between runs to get it to live. LOL.

Video is when I first put the E/F on, so she's a bit off the pace. You can see how long I have to hold it for the boost to come up and then I stuff it.

http://videos.streetfire.net/video/Testing-the-Rajay-EF-040AR-turbocharger_121204.htm

This year, I plan to give her a little shot of nitrous. Should be a lot easier on the motor.

Website looks great. I had forgotten all about it. Thanks for the long awaited update on this project! Make some video of the blower bike when you guys get it running next time!

[Junkie]

Well, of course there was plenty of work and learning but nothing extremely difficult. In my case the hardest part was to find most suitable mechanical parts like throttle bodies, fuel pump etc. Electronics side was easy for me since I was already familiar with these things.

Tuning is a subject of it's own. The beginning can be challenging. You have freshly installed system which you hardly know and the bike barely idles. But when you get used to tuning and learn how the system operates it's pretty easy and fast. At the first time I spend few weeks tuning on the road and then one hour on dyno to finish the tune.

What fuel pump did you use? Have any issues with power consumption?

[ArttuH]

3PSI is freekin incredible! With my current setup, I have to hold the bike on the 2-step for several seconds for it to start to build boost. It makes a shade over 2 PSI now. With my small F/B Rajay, I could make about 7PSI with the same settings, but I could not feed enough oil into it to keep it alive and at 18 PSI it was on the virge of overspeed. It also had other problems where I could drive thru the peak torque curve very easy. The setup I have now, I see no limits. I think you could shift at 14,000 and be safe with it! Crazy. I guess Terry ran the combo to 50PSI when they were setting all the records. They had to rebuild the turbo between runs to get it to live. LOL.

I know that those big turbos need plenty of spanking to wake up, especially older designs like Rajays. A friend of mine has old Funny Bike (actually I think it's Terry Kizer's ex-bike) with some big Rajay. Once I was with him when trying to tune the bike in dyno. One of problems was that inertial dyno wasn't able to provide enough load to make any boost!

Thanks for the video link, it was interesting to watch. A little nitrous shot could be a good idea. I have heard that it wakes up the turbo nicely.

About that turbo company in Texas, was it somehow related to Aerocharger? They seem to make (or market) nice self-lubricated VNT/VGT turbos.

[ArttuH]

What fuel pump did you use? Have any issues with power consumption?

Currently I'm using Mallory 4060FI. It draws about 4 amps and charging system is still able to provide enough power for it and other gadgets. But it's already on the edge, if switch on the grip heaters (about 2.5 amps) it needs at least 4k rpms to keep charging voltage up.

So there is enough power for the pump and rest of the injection system but it's better to select the pump carefully. Many car pumps draw something like 6-8 amps and most of "race" pumps 10 amps or more.

[lecroy]

A friend of mine has old Funny Bike (actually I think it's Terry Kizer's ex-bike) with some big Rajay.

About that turbo company in Texas, was it somehow related to Aerocharger? They seem to make (or market) nice self-lubricated VNT/VGT turbos.

If you don't mind, get some pictures of your friends funny bike some time and post. The real problem with the RaJay is getting parts beyond a simple rebuild kit. And the price is way more than you could buy something new for. If I do it again, I would like to base the engine on something a little more modern.

When I was a kid they did not allow both nitrous and turbos in the funny bike. You had your choice. I'm just wanting to see the 60's in the 1.25 range without beating the crap out of the bike to do it. LOL.

That's going way back and I am not sure of the companies name. I am 90% sure they were in Texas. The cavity to hold the fluid was cast into the center body and they had two small wicks that touched the shaft. They talked about the lub they used and it came from somewhere like the airforce. Seems like a nice setup for a race bike. I'll dig into it.

[ArttuH]

If you don't mind, get some pictures of your friends funny bike some time and post.

I did a quick search and managed to find one picture of that bike from the web. I should have some pics about the bike on the dyno somewhere on my hard disk. I will check later.


It's 1327cc engine, two stage nitrous, 3 speed auto transmission, Kosman frame and so on.

That's going way back and I am not sure of the companies name. I am 90% sure they were in Texas. The cavity to hold the fluid was cast into the center body and they had two small wicks that touched the shaft. They talked about the lub they used and it came from somewhere like the airforce. Seems like a nice setup for a race bike. I'll dig into it.

Sounds very much like Aerocharger (or Aerodyne). There is their web site: http://www.aerocharger.com/ Really handy concept indeed. Some time ago I did some search about them but didn't find much. Very little technical information, no price information and no sellers for separate turbo units. Only several kit manufacturers using their turbos.

[rapidray]

That picture above is the old Orient Express bike that Jack O'Malley owned & Terry Kizer rode. Ray.

[lecroy]

That picture above is the old Orient Express bike that Jack O'Malley owned & Terry Kizer rode. Ray.

Terry is not big on the web, but this is his responce.

"No this isn't the old Orient bike but a nice looking facimilty. The original bike is in a museum in Illinois. It spent some 12 years in the race rock cafes in Orlando and Vegas."

[ArttuH]

Terry is not big on the web, but this is his responce.

"No this isn't the old Orient bike but a nice looking facimilty. The original bike is in a museum in Illinois. It spent some 12 years in the race rock cafes in Orlando and Vegas."

Well, I don't know exact details of history of this bike. As far as I know it's imported from US to Finland at late 80's by my friend and he raced it actively till beginning of 90's. Last time it was on the track couple of years ago when it broke the crank and it's been on hold since that.

[lecroy]

That's too bad about the crank. Does he plan to rebuild it, or no parts to be found?

[ArttuH]

I guess that he will rebuild it sooner or later. Finding parts shouldn't be a problem. I guess that he temporarily lost interest on it. And money is always some kind issue for us ordinary mortals when playing with these toys. Drag racing isn't too big business around here...