the busa motor is going to be heavier of course but not 100lbs heavier ? the busa might weight 20 lbs more than any 750 motor (Im sure Dstroyer will correct me if Im wrong) I have weighed both the ds car kit and the busa car kit a few years back but didnt write it down but will post it in a week or so when I start ripping down a couple ds's. I started mounting tanks in the back , back in the 90's Dstroyer when down draft motors started entering the picture and when I wasnt much of a fabricator and could barely tig weld . after I did mine I started noticing them popping up all over the place with the tank in the back . before the 90's all streetbike motors had the carbs coming right off the back of the cylinders and they were so much easier to install and you could generally use the stock tank. I actually helped build the tank (Im ashamed to say) on jeffroe's old bike which is the one you have posted in your pics page, which used to be gabes old bike when it was out here in california. by the way, jeffroe called me back then and wanted me to build him a ds busa and I told him I was busy at the time and I directed him to gabes bike which was 40 miles from me and was a copy of mine that I had helped gabe get together. I didn't build the whole bike for him but helped him with all the technical parts . I was not responsible for the aluminum swing arm though. LOL. I ride with Gabe still. anyway, jeffroe insisted that the bike be powder coated before he recieved it so gabe tore the bike down and did the frame in jeffroes color of choice, silver black hammertone. [img]i/expressions/face-icon-small-sad.gif[/img] I try and build bikes that are factory looking without giant tanks sticking out in the back or pieces of square tubing grafted to round or strange looking frame curves fabricated to reach around factory headers . tpsycho, I believe the tank on the turbo bike I sold a few months ago was 3.1 gallons? . I can do a non turboed tank in 3.9gallons. some people think the busa motor being so large will drink lots of fuel. I ride with 2 guys on honda 954 powered quads and one guy on a 600 suzuki powered 250r and we all need fuel at about the same time. the little motors have way less torque and have to work much harder and at wider throttle positions to go up giant hills and to keep up in general. the bigger motor just tractors through the dunes efortlessly and thats why a busa powered bike uses less fuel than a ds with a stock motor. there is NO WAY a 750 will use less than half the fuel a busa motor burns. I think you are getting a little carried away with that statement Dstroyer. LOL , and as for the power of a 750 as a dune motor , no you wont be a slow poke, OUT IN THE DUNES. the race hill is another story. , again Dstroyer, as you said you," havent dune riden out west" where all the fast dune equipment in the country is and money is no object and you havent mentioned hill racing once but that is a big part of the sport for most everyone out on this side of the country. you probably havent lined up in a 10 bike hill race with 9 15 to $25,000 banshees that are just over 200lbs either . if you ever do come out bring that 750 and I will roll my sons little banshee out of the moth ball fleet and show you what hill racing in California is like. [img]i/expressions/face-icon-small-happy.gif[/img] also , why would Majorecho sell such a beatiful bike with a powerful gsxr1000 motor in it? hes upgrading to a busa . everyone is. there are currently busa ds's being built all over the country. I get emails constantly from people wanting to do the busa conversion or from people who are in the middle of this conversion and need a little more info or a pic. I learned a long time ago not to try and save money by doing a build a little at a time. I had a kz1000 drag bike back in the 80's that I ran 1/4 mile asphalt with. it was quick with cams and carbs and a drag pipe but I soon wanted more so I installed an 1100 cc big bore kit and bigger cams and bigger carbs and soon I again wanted more. I then installed a 1260 big bore kit and huge full drag cams and 38mm lectrons and much more stuff and still wasnt satisfied. I ended up putting an aftermarket wiseco big block on the bike which made it 1425cc and also added a turbo kit and a nitrous fogger system . I ended up with about 20k in the bike and it went like hell but if I had just went with the big all out kit in the first place I could have built the bike for half the price and less than half the work. I feel its the same with which motor you now choose for an atv conversion project. why build a little one just to upgrade later? do it once and do it right the first time. why settle for little unless its all you can afford. Dstroyer, what rear sprocket size did you go with on the turbo busa and what swing arm length? did you relocate the rear shock ?also what tires are you going to run and what roll out and what exact chain? did you end up with a stainless steel header and have you powder coated the frame yet? what fuel pressure are you running and are you running a power commander ?

 

Thanks for the information Supersonic do you have to change the rear shock mount location on all conversions or just the turbo version?

 

I do it on all of them because I have been using +10 swing arms which just add to much leverage and make the back of the bike to soft IMO. I guess Major echo has just been adding thicker shock oil to the rear shock and getting away with this on his gsxr1000 builds with +6's and even a +8 I believe but Im 220 lbs and using a little heavier motor of course and dont want to have to worry about bottoming out over the whoops at speed.

 

how do the 954's run do you know the hp rating on them?

 

Gregg,
Are you actually asking me questions, or are you throwing some sarcasim my way???? If its not attempted sarcasim, I will be happy to answer you.


Gary

 

????? As you obviously know by now, I can be a di%k [img]i/expressions/face-icon-small-happy.gif[/img] but wasnt being one at the moment. LOL just curious to see how the other guy does it. but if you would prefer sarcasim..... I will try to be less vague with my sarcasim in the future so as no to confuse anyone. LOL

 

the 954,s run ok . dont know the exact hp but they are a good dune bike. again, they will never be king of the hill or anything. I even know a huy with a turboed 954 and I think his top speed up sand mountain nv was 79? Im sure with some more tweaking it will run in the low 80's.

 

Dstroyer,
I think Gregg was asking some sincere Q's at the end of his last post. He is very generous with knowledge he has gained thru experiance and just like to trade info with others that have similar interest.
I personally would not recommend a conversion build any smaller than a 1000cc motor, the amount of work to properly install a 600cc or 1300cc is the same and the market will always be better to you if you are putting out bigger numbers. If you look at the build as a long term investment you will have a much better chance at recouping your $$ with a big motor vs a small motor.

 

Amen brother!!

Well you have a step up on me Gregg, Im usually not known for being a dicc. LOL I will be happy to answer your questions then.
I build my own sprockets. This machine is using 16/56. The swingarm is a plus 10, which I build myself. Yes, I relocated the shock on this build, but not others. I rebuilt the shocks with stiffer springs, revalving and oil. The upper mount is moved back 2 inches, and up 1/2. The stock lower mount location is 3/4 forward. I have 2 sets of tires in house, and will decide later on them. 25x12x10 16 rippers and 26" comp cuts 16 sand tires unlimited blasters. Dont know the roll out of each. The chain is an ekzzz 530. Yes, the header and dump pipe, along with external waste gate is S.S. No paint yet, but will be translucent candy apple red. (stealing that color from a gentleman that goes by the name dollarbilz on the forums. Met him in OK, and loved the color) Fuel pump is not on yet, nor is it set yet. I can look up the manual for that info later. Yes, the machine has a pcIIIusb. I will not be retarding the timing on this machine, but I will be running race gas to get it to 270 hp or so. When I find new injectors, which I believe honda has a set of drop ins for the busa, I will run it up to 12psi at 300hp. The stock busa injectors is only good for 270 on race gas, the fuel system will not handle anymore SAFELY!!

there you have it,

Gary

 

Keep the conversation going Super & DStroyer, lots of interesting info coming out here[img]i/expressions/face-icon-small-smile.gif[/img] Nothing like doing a job over and over, each time gets easier and any problems end up getting sorted out, thanks for sharing.
I agree with Supersonic about doing the job properly the first time and it seems that quite a few that have sold there conversion bikes come back and do it again with the bigger powerplants. Do the busa motors have any problems at all when they are in stock form? I was suprised to read about the clutch problems with the yamaha R1.
Now I need to decide- R1 yamaha raptor or Busa in the DS- decisions.

Gav