TURBO

Warning about ATS in FL. The turbo systems are not as well designed as they could be! For example a friend of mine purchase one for an R1 and they suggested just adding a 2nd head gasket to lower the compression! This may work but is a poor method of lowering the compression. With building a good, reliable turbo system you should build up the motor first then you dont need to take short cuts like 2 head gaskets to adjust the cr. Its a lot cheaper to do it right than be cheap and pay for a full rebuild!
 
Disagree, order a gasket kit for a GSXR750, you might find that Suzuki will send out 2-3 different head gaskets (or should I say different layers) for you to use.

Mark has good quality products, and builds fast bikes (try a 239 mph GSXR1100).
 
A GSXR750 is not a turbo bike. Anyone can build a fast bike for a few passes, lets see how long they last! It is not my intent to put down ATS, all i am saying is that the system they designed for the R1, by using 2 head gaskets, is not well designed because it is a cheap way of bringing your cr down.
For about $1k more it could have been done right! If I were spending $5k on a turbo i would spent $1k more for it to be done right than $5k and have a blown engine! Just my opinion, i dont want to start an "ugly string".
 
Why would you even want to lower the compression...all that low compression piston stuff is bull on turbo`s. We ran 275lbs of compression on a pro mod to get it off the line and it ran faster than it ever had. MTC recommends 10 to 1 pistons for a GSXR now. If you are running a turbo spend the money for rods,forged pistons,(not wiseco`s),good copper head gasket with cylinder o-rings,studs,Stainless valves(over size on exhaust),good head stud nuts,undercut tranny,make sure your oil pickup is forward in engine,clutch hub,clutch springs,copper base gasket,valve springs with possibly turbo cams,and probably half dozen other things I forgot....OR DON`T DO IT AT ALL...PERIOD!!! The object is to kick ass and if you can`t run at least 30lbs of boost a nitrious bike is going to kick your tail!!!
 
Finally. Turbo guru Erik Marklund of McXpress in Sweden is finally putting togeather a Turbo for the Hayabusa. It is ordered by the famous stunt man Gary Rothwell from England. He is planning to use it to take back the world wheelie record currently beeing held by Patrick Furstenhoff of Sweden. He did one at 201 MPH ( over 320 kmh ) on a McXpress Turbo Blackbird. ( picture at: http://www.mc-xpress.com/bikes/turbo.htm just remember tat the qoutes are in KW multiply by 1,36 to get horsepower.....)
Rothwell has ordered a cool 400 hp on his Busa.... And friends form USA. Once again these Turboes DOES WORK ...period. No turbo lag...no problems with stumble at low end...no carburetor problems ( or injector problems ) I know it sounds to good to be true but I have tried hree different now and they all work ( http://www.mc-xpress.com/bikes/turbocyklar.htm Both on this pictures have been between my legs. Man its something else with a 750 with 200 hp and 170 kg. )
Pictures and dyno as soon as they are ready.....
One note though , the turbo for sale will not be 400 but more like 250 hp. Not because of relability problems with the bike , more like the buyers....they will melt theyr brains if they get 400 hp....hehehehe
McXpress turboes are availb. in USA under the name American Turbo Systems in Florida. Call him for a testride. He will be happy to give U the ultimate speedthrill ( Can I collect my free turbo now Erik ? )
 
I forgot to tell U all that the Turbusa ( hehe ) is going to have a curved intercooler and a second set of injectors to take care of the extra fuel beeing dumped inside the engine. The injectors are beeing installed upstreams of the trottlebody ala Yamaha(haha) R7 and all current F1 engines.
The turbo itself is mounted in front of the engine and the header pipes are made of thick stainless steel tubing. Once mounted there will be no sign of the turbo , just the sticker on the exhaust. Did I say sleeper?
 
I agree, what's not to like?
FYI, American Turbo Systems in Florida is Mark Moisan's company.

Thanks for the info, Yngve. But I don't think any Hayausa can be a sleeper, even straight stock...except maybe to another 'Busa (LOL).
 
About lowering the compression. I am the first to admit that lowering the compression using different basegaskets ( or headgasket ) is a cruel way to do so but look at the options. 1 New set of pistons...it would add much more work if u want to do it properly ( if u want to do it right you HAVE to bore the sylinder because of the clearense..( ok maybye U are lucky and find one set that slip right in but what is the chance of that when U doesnt know from the beginning how big your cylinder are ? )) 2. Take away metal from your cyl head. Hmm On the old GS 1100 this is an ok way to go and somtimes on the newer oil cooled GSXRs but the new watercooled models you just doesnt have the metal in the head to do it. 3 Take away metal from the pistons. Hey U arent serious now ? The pistons in a turbo need all the beef it has. This is almost never a true option.
4. Put a thiker base ( or head ) gasket on. Possible drawbacks are 1: sqishband ( area between piston and head where the mixture are beeing compressed and forced into the real combustion chamber ) is ruined and no longer work. Well 200 hp 750 with good low end response ? I think it works OK. 2: problems with camchain . Some models like the CBR 900 has a really tight camchain so its difficult to put on a to thick sylinder gasket on, this limits the output a little but...200HP again who cares. 3 Problems with upper engine attatchent to frame ( where the cyl head is mounted to the frame). Well in all cases this is a non existing problem. So what are we left with ? Well for the all out man who has enough money, go for a new set of pistons and maybye U gain a little bit because of the better "designed" combustion chamber u are getting but U also are getting a bigger bill to pay. For the rest of us they work wery well with thicker base gasket. And about the finish of the systems.....well they doesnt look like new yapanese stuff. Some of the parts look a little argicultural ( did I spell this one right ? Its not easy to type in a foreign language , just ask Jan from Holland hehehe ). But the Turbosystems WORKS and If U want everything to look stock...keep the bike stock. Anyway if somone truly wants to discuss this further I am happy to answer anything , just reply here or to my e-mail adress yngvek@student.hin.no

[This message has been edited by Yngve (edited 04 September 1999).]
 
And about how long they last.
The GSXR 750 97 model with 190 RWHP has gone 20000 miles with NO hiccup whatso ever. It is taken to the usual dragstrip and to the not so usual Roadracing torture every chanse they get.
Erik Marklund himself put in quicker laptimes on the 750 turbo that on the standard bike.....A true testimony that they work on the " road " because everybody knows that what works on the dragstrip doesnt need to work on the road but what works on the roadcours...well it for sure has a better cance of working on the street. ( Ora did I get that wrong ? hehehe )
Anyhow ask to try your friends R1 one day. If I am not wrong u will be amazed too. ( depens on how good he has put it togeather. I have friends who have gone out and bought parts for a engine that would at least give 200 hp and all they got was 110. If U doesnt do it right it will not make power but it doesnt need to be the part that are wrong. No pun intended. ( well actualy it was intended :) )
 
Ianfila, I am not sure what you mean by saying the GSXR-750 is not a turbo bike, but Mr. Moisan certainly makes one. See Motorcyclist, July 1998, p. 76. A durable one? Maybe not, but a fast one, I think so.

As you guys probably know also, small-diaplacement motors (like 750) are more sensitive to tune changes by slight changes in thickness of the head or base gasket than are bigger motors. It is a design/performance factor that shouldn't be ignored.

If it is tested well, it works, it doesn't blow, then it is a viable option. How much do you want to spend fixing a non-problem, when some other weak spot might make a lot more sense to work on? That is what it always comes down to.
 
Sunoco has out a fuel for pro-mod cars that really works great in turbo nitrious bikes...no burned pistons if fuel is right.That was my point if you want to go really fast you have to go all out...otherwise you get beat.
 
Just my 2 cents on turbos:

1. A messed up squishband is not a problem in forced induction. The mixture is actually shoved into the cylinders, not sucked, so the squishband is a lot less important.

2. If you build a turbo (10psi+) and you don't lower the compression ratio, you're really asking for trouble. Your 11:1 ratio could easily exceed 13:1, and not many engines can handle that. Water injection goes a long way into cooling things under boost, but a 9:1 ratio is the best insurance policy. Yes, you lose a bit in the low revs, but you get back home on the bike (not a trailer)
 
anybody see the latest issue of Motorcyclist where they have a article on a Turbo R1. Same guy who did the Turbo CBR900RR,Gixxer 750 and CBR 1100 XXX. Think its a sure bet he may do a turbo busa as well?...or is this the same guy we been talking about at the beginning of this thread (can't remember his name)forgive me if it is. Plenty tired working to save money up for the Y2KBusa..

Speed
 
You are referring to the Aerodyne turbos, which Mark Moisan no longer uses (he now uses Switzer). the Switzer turbos are basically the same as any other turbo with the exception of the Aerodyne.
 
You and me are in the same boat, speed. Just got home from the night job, my eyes are burning. But I'll have that new hardware.

Yeah, it is the same guy, name is Mark Moisan. Turbo kit from him for the Busa? I think we can count on it. Count me in. That is collector's item stuff, if you get it set up right.
 
These turbo kits are different to the 'normal' ones (eg Mr Turbo).

They have a 'variable vane' patent, and they have a self-contained oil supply - no oilpan drilling. Looks very high-tech.
Reliability is questionable, though. I've heard horror stories, like they need a rebuild apart after a few hundred miles.
 
You can run 8 to 10 pounds of boost on the street with out a problem with stock piston's. It would be nice to have acohol injection that would be adjustable by boost.Does any one know how much oil pressure a busa has. If boost pressure exceed's center housing oil pressure it will blow seal for bearing,if you are not running external oil pump.you also can add another base gasket to lower CR, but if you have cylinder off why not pop in some turbo piston's

[This message has been edited by jim p (edited 01 September 1999).]
 
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