Let´s theorize: CB1100 turbo

[AzBob_imp]

Something to consider is the fact of the small displacement lends itself to a much larger percentage increase than is typically seen in an automotive application. It's much easier to get 1 hp or more per cc or cid the smaller you go in displacement and still be usable for every day driving.

And in a racing application you can easily double (or more) your output with a turbo. Have you ever seen what a Grand National can do? I have seen those put down close to 1000 hp. And yes they are turbo charged from the factory, but with a larger turbo and mostly head work and an upgraded intercooler you can just about make whatever power the block and gaskets can take before failure.

Basically it's all about how much do you want to spend to go fast (or look cool).

That's why I qualified what I said with "safe." The stock GN is a dog. The GNX on the other hand...

Also, you can't "easily" double your horsepower. You're talking about cars that come with turbos from the factory, so their compression ratios are already reduced. Take something like a stock Corvette, with it's already high compression ratio (almost 12), and attempt to stick a big turbo on that, and see how that goes. I'll tell you because I have friends who have done it... the engine dies quickly; the ring lands go away, and soon your engine is puking oil from every orifice. A great deal of investment in both time and money must go into turbo charging a naturally-aspirated motor if you want it to live a while.

[Randy B]

I get what you are saying there, but a GN is rated at 245hp where the GNX I think is 276hp...not a staggering amount more.
I understand compression ratios, head flow numbers, quench, lift, duration, duration @ .050 lift, different positioning of rings, piston coatings for both reducing friction and for heat dissipation, the use of studs vs bolts for proper torque, o-ringing the block and heads for proper cylinder sealing under high pressures due to boost and/or nitrous, the fact that you can over port a cylinder head, titanium valves and springs to keep the weight down in the valve train, Knife edging the crankshaft to help reduce cavitation of the oil, nitriding parts for strength, or even cryogenicly freezing parts for strength.

OK so I went a little overboard, sorry about that. My point is if you have enough money you can do what ever you want, and there are many ways of doing it wrong, and quite a few ways of doing it right.

I wouldn't even consider boosting a new corvette, but lets say something in the mid 80's? Sure. Those cars were in the 8.5:1 range for compression and that is fine for adding a turbo. Do that along with a new fuel injection like a DFI and you're off to the races so long as you prep the block and run the proper program that pulls the correct amount of timing out and adds fuel as needed as boost increases.

Again...it's all about the money.

Wow...that took off on me.

[AzBob_imp]

I get what you are saying there, but a GN is rated at 245hp where the GNX I think is 276hp...not a staggering amount more.
I understand compression ratios, head flow numbers, quench, lift, duration, duration @ .050 lift, different positioning of rings, piston coatings for both reducing friction and for heat dissipation, the use of studs vs bolts for proper torque, o-ringing the block and heads for proper cylinder sealing under high pressures due to boost and/or nitrous, the fact that you can over port a cylinder head, titanium valves and springs to keep the weight down in the valve train, Knife edging the crankshaft to help reduce cavitation of the oil, nitriding parts for strength, or even cryogenicly freezing parts for strength.

OK so I went a little overboard, sorry about that. My point is if you have enough money you can do what ever you want, and there are many ways of doing it wrong, and quite a few ways of doing it right.

I wouldn't even consider boosting a new corvette, but lets say something in the mid 80's? Sure. Those cars were in the 8.5:1 range for compression and that is fine for adding a turbo. Do that along with a new fuel injection like a DFI and you're off to the races so long as you prep the block and run the proper program that pulls the correct amount of timing out and adds fuel as needed as boost increases.

Again...it's all about the money.

Wow...that took off on me.

Agree!

[VTR1000F_imp]

Interesting Suzuki concept bike: http://www.motorcyclistonline.com/featur..._to_speed/

[Randy B]

This paragraph from that link is damned confusing
Quote:Will we see the Recursion in showrooms anytime soon? The concept bike looks nearly production ready, and it's exciting to think that the last time Suzuki revealed a "concept" this fully developed—the V-Strom 1000—it appeared in showroom guise one year later, practically unaltered. We can dream! Much more likely, however, is to see this frame and engine form the basis of a new line of Honda CB500-like entry-level middleweights that fill an immediate hole in Suzuki's global lineup, rather than a high-performance, new-generation GSX-R/SV. It's encouraging to see that Suzuki is thinking about turbos, however. Hopefully we won't have to wait too long for this technology to recur.

[The Spaceman_imp]

Here's a gent who built a 500 hp bike by turbo-charging a GSX-R1100. Guy Martin is his name, and he won his class at Pike's Peak with the bike. If you can get 500 hp out of a '90's Gixxer, 200 out of the CB1100 seems within reason.

https://www.youtube.com/watch?v=6woPgU4vqnU

[AzBob_imp]

This paragraph from that link is damned confusing
Quote:Will we see the Recursion in showrooms anytime soon? The concept bike looks nearly production ready, and it's exciting to think that the last time Suzuki revealed a "concept" this fully developed—the V-Strom 1000—it appeared in showroom guise one year later, practically unaltered. We can dream! Much more likely, however, is to see this frame and engine form the basis of a new line of Honda CB500-like entry-level middleweights that fill an immediate hole in Suzuki's global lineup, rather than a high-performance, new-generation GSX-R/SV. It's encouraging to see that Suzuki is thinking about turbos, however. Hopefully we won't have to wait too long for this technology to recur.

Suzuki doesn't have anything like Honda's 500cc entry-level bikes (CBR500R, CB500F, CB500X). The author is saying it is most likely the concept will be the basis for just such a bike in Suzuki's line-up.

[Randy B]

Ya know I read that so fast that I completely missed one very important part of that ....CB500-LIKE.....oopps.