Finally got to finish this thing up last Thursday. Work has been hectic this past winter. I took it to Silver Lake for its first outing, and what a rush it was. I believe the mapping is right on the money, but I will have my Lm2 system soon to verify. The torque and HP are incredible at only 6 lbs of boost, and saw no need to use the 2nd stage with the track conditions we had. The machine never broke a sweat all weekend, and the only issues I had were stretching chains. The throttle response is instant, and I do mean instant. Absolutely no clutching needed to get this bike moving in any gear from idle. I ran 25" 16 paddle rippers with 17/56 gearing, and had no problems with bog or turbo lag what so ever. That seemed to be a nice setup for cruising and dune dragging. I will however, be running some 25" 12 paddle diggers for drag racing on a track.

We will most likely take this thing to 10 psi tops on c16 fuel for the track, with struts and a wheelie bar. I dont see any need to take the motor any further for my use, but its certainly capable of a heck of alot more.

here is the link to my photobucket album,

Gary

http://s179.photobucket.com/albums/w313/gixxergary/

 

by the way, I am working on my custom bumper and grab bars! The headlight also bolts right in, but we cant ride at night in this part of the country anyway, so I left it out.
Gary

 

Looks pretty sweet dstroyer PS glad to see where the gas tank is located lol. Just messing, but she looks really really sweet keep up the good work.

 

very nice build! are you gonna bring it to the West coast DS days to show it off?

 

I would in a heart beat if the gas wasnt going to put me in bankrupcy. Went to silver lake last weekend. 650 miles round trip and almost 300 bucks in gas. I planned on hitting St. anthonys this summer, but couldnt justify it without at least 5 more guys car pooling.

Gary

 

Very nice work.. that thing looks wicked fast

 

I am in the middle of a Busa build right now. It is coming together nicely but I wanted to ask you a few questions after looking at these pictures.

After putting 100 hrs or so on my R1 Raptor that is in my pic page I learned that a few pounds doesn't matter to these bikes. I actually am faster on my R1 bike than my 120 lb pilot because my 190 lbs can man handle the bike under brutal acceleration better. I noticed you have a very light axle and swingarm that would scare the daylights out of me to run with that much power. Are you thinking it will be ok because you tall gearing is transfering much of the load to your clutch and away from your axle? Do you think the weight savings is worth whatever safety risk is involved with those parts...if any?

I also noticed your radiator is right close to your headers. My R1 bakes. What I mean is, the fan comes on at 219 F and kicks off at 212. I can shut the bike off at 208 and turn the key back on after about 45 seconds and the temp is up to 225 and the fan is running. I am used to a little temp increase when you shut an engine off but these seem to bake more than a single. Do you anticipate or are you having any trouble with your EGT's effecting water temperature?

(PS: I would ask SST but then he would take credit for building my Busa bike for me and his advice being the only reason it turned out well, lol) [img]i/expressions/face-icon-small-happy.gif[/img] J/K SST. [img]i/expressions/face-icon-small-smile.gif[/img]


BTW, Gary, the work is very clean. You are right to be proud of that bike!

 

The cleanest busa install Ive ever seen.

Very good job Gary.

Excellent.

 

NICE!!! Thanks for sharing!

 

Thanks for the kind words guys! Im very pleased with the build. I spent a ton of hours alone on the wire harness making it as clean as possible.

DSnut,

I have no concerns about the swingarm strength. I use 1.5 dia. x .095 wall chromoly for the big bikes and .065 wall for the smaller bikes I built. Its a simple design, but extremely strong. These swingarms are running on most of the local big bikes in our area. The gussets you see on the top of the carrier housing are mirrored on the bottom also. Thats a solid 28" jjanda axle. I didnt know how well that was going to hold up, but ran it for 3 days last weekend, without even a hint of wobble. I will be keeping an eye on it though, and if it even hickups, I will replace the shaft with a gun drilled 17-4 stainless steel shaft. I believe the hubs are fine, and plenty strong. I guess time will tell about the axle. Ive heard people tell horror stories about breaking these things, but its always a friend of someone they knew that broke it, just driving around normally, but I have yet to talk to someone who actually broke one. LOL I ran that axle on my 750 on nos for the last 2 years and when I sold it, it was still straight according to my dial indicator. Your right about the weight on these things, a few pounds here and there mean nothing. I guess I just love the look.

As for the radiator. I cant give an opinion on the location for a bike running the stock header assembly since Ive never built a NA busa, but last weekend for its first time out, with the turbo, the bike never got above the midpoint line on the gauge. I dont have an actual temp gauge on this, just the gauge in the dash. I waited inline to get into the park on Sunday for almost 35 minutes with the bike ideling, and the fan only came on a couple of times. Actually, now that I think about it, that needle never got above the midpoint after making a ton of back to back passes on the drag strip. The only thing I changed was routing the fan wires up, instead of down like it was designed. I did check them periodically thru the weekend for signs of melting, and they are fine.

Here is my take on these big motor builds. Last fall when I decided to build this thing, I originally set out to get as close to the world record as possible in 300 foot. Now, Im not saying I would get that close, but I wanted to see where it would be. I quickly came to my senses and realized, that no matter what I build, I have to use it to justify it. So, I backed up and took a good look at what I really wanted inside. I wanted a machine that looked great cruising the dunes with enough HP to have fun on the drag strip. The drag racing was a distant second to the type of riding I was missing since I started drag racing 5 years ago. When I ordered my turbo system originally, I had bugeted a 2 stage system with all the internal mods to run upwards of 430hp. I thought to myself, what the hell am I doing. LOL and quickly changed the order to the simple bolt on kit. I think a machine like this is really just a status machine. To really dive deep into the duning with being able to jump when you want without concerns with a light weight machine that will run fast on the strip, I still say the 750 is the way to go. LOL

Just my 2 cents on the subject. I love the ride, the power is intense to say the least, it turns heads quickly. I think it will run 3.7 on a strip with struts and a bar, and thats as fast as I care to go. I wish everyone luck with their builds, just keep chugging along on them, its worth the effort. These machines are taking over these days, more an more people dont want to spend the money on the stockers any more. I look at it like this, if I blow up this busa motor, I can pick up another for 1500 bucks and be back in business over the weekend. LOL

Sorry for the long winded reply,

Gary