Nice!!

 

Its lookin' good Rob.
Git' Er Dun!

 

I have a turbo, turbo manifold, and lines ready on my 93 900rr and i am waiting till this winter to finilize it. Right now its prime riding conditions in PA so ill wait. I am wondering what you had to do to ur carbs or are you running fuel injection? Did you run the vent for the carbs into the boost line like some ram air bikes have? Also what jets and needles are you running? Also what fuel pressure are you gonna set it at?

 

i want it! i want a turbo bike!

 

The slides are pressurized via the air box. The bowls are pressurized via a pitot tube that runs across the air tube just ahead of the air box.

I have yet to assemble the bike... still. I popped the head off to do the thicker headgasket, and one of the engine case holes stripped out. The threads are apparently just inserts. Went to helicoil it, and reassemble, and another one stripped out. Now I have to pull the entire engine so I can drill/tap/helicoil ANOTHER hole. Hence I have yet to actually yank the engine. Sort of pissed at the bike.

How much would you like to buy my bike for?

 

Pulled the engine, helicoiled another engine case hole for the head bolt (that's 2 of 10 now), and got the head back on. Everything is torqued to 35ft-lbs as per spec. Finally.

The biggest snag is finally taken care of. Now I've just got the cams to dial in (a pain in the ***), some assembly, some parts to bolt on (sprockets, et cetera), clutch, and some creative stuff like my fuel system.

Couple days and it could be all together. Then a tune, and it'll be good to go.

 

As for the DSM intercooler being junk I disagree. I ran my 91 Talon to a 12.1 @ 110 on a stock side mount at 26 psi. Much faster than anyone expected. And a friend went 12.4 at 108 with a stocker and another 12.6. Mind you all was with the race gas band-aid. But I did run a constant 19 psi on pump all day on the street. Just no 4th or 5th gear pulls or that ****er would heatsoak bad. But I'm guessing your running a smaller turbo at less boost so you should be fine.

 

Smaller turbo, less boost, and it's now a front mount getting a ton of air. But it is cut down. I still think it'll work.

Got the engine back in today. Took some pictures too. I'll get those up in a little bit. You can see my Vortex aluminum rear sprocket. It used to be 45 teeth, but is currently now 35. The last time I rode it before handing it over to my fabricator was a trip to the drag strip. That night before leaving my house I noticed I was missing two teeth. Still went anyways though. So in the process of riding to the track, making passes, riding home from the track, and riding up to my fabricator's place, it lost 10 teeth. I'm going back to the stock steel one anyways. Maybe get something even smaller in the future.


Stock headgasket is about as thick as a dime. Actually, a little less. Like a really high quality piece of art paper. The new gasket as it sits right now, clenched between the head & engine case, is as thick as a half dollar. Well, if you give the half dollar a good whack with a hammer. With the gasket, air:air cooler, and fuel running through an ice tank, I don't think predetonation will be a problem.

 

Well in it's factory placement a DSM intercooler is technically called a side mount but it might as well be a front mount because it's isolated from the engine bay heat and there is nothing in front of it to preheat the incoming air anyway. The one restriction on the intercooler are the restrictive inlet and outlet but I'm sure you have changed those.

Another thing that NO ONE thinks about is ducting. Ducting can make a HUGE difference in intercooler efficiency and is a very worthwhile thing to do. That may be one of the reasons I have such good luck with mine. I tossed the stock plastic ducting and tig welded up some aluminum. One thing to keep in mind too is that a duct works better when the opening is LESS area than the face of the core itself.

Say my stock intercooler face is 8 by 8 inches, my duct is about 6 inches long with an opening of 5 by 5 inches. Also make sure to seal up all the sides so the air has to go through the core and not around it. You can see gains of up to %20 in efficiency with a nice duct.

Keep us updated on your progress. I also have a Pearl Yellow 98' CBR900RR and am pitching a tent in my pants over your bike.

Edit: Ok after more examination of your photos you really did hack that intercooler down. It might be a pain in the *** but I still think a duct will pay good dividends in your quest for power. Asking the air to bust an almost 180 after the turbo outlet is going to **** it off too but the nice radius of the pipe and the inlet end tank design look pretty good. You will really want to try to use some sort of thin tin heatshield (that stick on stuff works great) to protect your core and pipes from the exhaust and some wrap on the exhaust itself. Don't use wrap on the intake pipes because it will help them from heating up so fast but after a long ride they WILL heat up and then with the wrap they will never cool. Also giving your intercooler and pipes a nice polishing will help keep heat out. Sounds like a pain in the **** but if you put the effort into it I think you will be rewarded greatly.

I was also wondering what you are using for boost control? After looking at the header and downpipe it looking like your going to be using an internal gate but then I saw no provisions for it on the turbo, just a lonely flapper arm. Again let us know what's going on and MORE PICS!

 

Why the smaller opening?

I don't have much room (if any) to make any sort of ducting or shrouding for the IC, but one of the projects in the next couple days will be fitting my 9" pusher fan to the front of the 8.something inch tall radiator and shrouding it as best I can.