has anyone ever seen or known anyone with a Turbo 900RR?

 

There is a guy by the name of Droptop66, I think, on the RRforum that is building one. I think if you search turbo 900 or something like that, you'll find it.

 

Oops, I just noticed he's on here, too.

 

I check in here occassionally mostly to help out with any questions that haven't been answered or answered well. Like Internet charity or something. RRzone is more of my home, but image tags aren't allowed, there's a language filter, and things get deleted like when you say you didn't want to buy an expensive part because you're ****ardly and someone's inadequate vocabulary thinks you're making a racial statement and now they aren't sure if they saw it with an "a" or an "e" so "whoops." [:@] So I might not post there for a month or so, or perhaps I'll just stick to my turbo thread.


As for the bike, I'm just about at the tuning phase. I got the bike running a couple months ago, but I have fuel leaks galore. Redid my fuel system entirely, slapped a few new parts into the carbs, glued some things shut, and now the bike is running without leaks and about 3psi of fuel pressure. Couple more things and I'll be taking it into a shop to get tuned on the dyno and the boost dialed in.

Any questions? The longest thread on the RRzone is my turbo thread, detailing all the steps so far. Or you can just ask me over here or over there. PM, Instant message, email, whatever. Although if you just want simple, cheap power, I suggest nitrous. The turbo has been pretty expensive and time consuming. It'll end up making more power than I'd be comfortable making on spray, but this is taking forever. $600 for a direct port wet nitrous kit, and I'd have been done in a weekend.

 

I love your honesty about the challenges of this project.
The reason that i am interested in a turbo is because it seems safer and i can have a longer life span on this engine.

 

Most nitrous kits are conservatively rich, so turning your pistons into molten slag isn't a huge concern. But it is more abrupt with the power delivery. The turbo is gentler and has a "cushion of air" with the boost. One of my turbo mechanic friends was explaining that one day with regards to how it's possible to be making 1500hp out of a 3liter Supra 2JZGTE without the engine eating itself.

Plus with the turbo I bothered to order a thicker Cometic head gasket to drop the compression ratio. A safeguard I wouldn't have bothered with if I'd just slapped a kit on the bike and started spraying.

There is a guy in Sweden that was making 260whp on stock block and rotating assembly. Higher octane fuel is available there than here, and he had lower compression pistsons. But the important thing is that the internals and gears can take 260hp without trying to exit the block. However, I found an article of some Formula Extreme team that was running turbo 900s back before it was illegal, and their forged aluminum pistons melted in the middle of the magazine test. 210whp I think it was. It also didn't have gauges and was being flogged by a magazine, so that's just asking for problems. MC-Xpress's kit for the 919cc 900 engine made 185whp I think. Mr.Turbo made a bit less, and with a boost malfunction during a SportRider test, the bike was spiking 13psi and probably making 200whp+ and just took it like a champ. Completely stock internals and compression. MCXpress runs a thicker head gasket (I went a bit thicker than theirs since my intercooler is smaller, 91 octane is the best fuel I can get at the pump, and I'd like to make 225whp).

The thing that freaks me out is that Formula Extreme bike that melted. I'd imagine that team would have access to a dyno and a wideband O2 sensor and would be able to dial the tune in. Lean is mean though, so if you're looking to make the most power you edge closer and closer to that 14.7:1 stoichiometric mix. Maybe that's what they did. Maybe it was just a crap piston. Who knows now. I want 11-11.5:1 from the jets. Ought to be safe and cool. It'll get thoroughly beat on at the strip because I want a time slip with an 8.9 on it. The rest of its life shouldn't be too rough. There are two drag racing 954 guys on Fireblades.org that make about 190whp with N2O and run 9.2s. 30hp more than them and some 60" Pingel wheelie bars, and that 8.9 might be possible.

 

There are a few guys on here that have turbos on there 900 I'll try to find em. How come 91 octane is the highest octane you can get? Can't use turbo blue in the bikes with turbo? Just wondering but don't really care because the 117 hp is enough for me! But the sound of a turbo sounds so interesting !!!!

 

91 octane is the highest octane available at the pump here in AZ. I could run various race fuels, but that's ridiculously expensive for a street bike. If I were building a race bike or a dyno queen, then that's what I'd go with. I just think that having different "race tunes" and "street tunes" is lame. Eh, I'll be just running one tune with no excuses.

I wish ethanol was an option.

 

4.99 here in michigan no matter the spike or dip in gas. I never filled my bike with it just put a gallon or two and used 94 for the rest. The turbo blue makes the exhaust smell sooooo goood!