OK, before I get started, I know, its easier to ditch the 250 and grab a 600... awesome. I like my 250 because: a) It feels easy to throw around b) You pay less rego c) You use less fuel d) [ this is important ] I like big revs. I like the sound of 14,000 to 18,000rpms when you can just tell people are thinking, he must change soon, surely... but no, there is more. I like the revs... I DO NOT want to be doing 110kms by time I get the big revs. Call me a pussy, but I enjoy the big revs and feeling like I'm pushing the bike hard, yet I'm not going fast enough to be thrown in gaol. So... now that rant is out, I want some options. I looked and looked for the last few days, I can't find any NEW super sport classed bikes. Seems that manufacturers are of the same opinion as most people... if you want performance, get a 600. So... I'll have to do the work. Options I'd like to discuss A) Fuel Injection. Requirements? Difficulties? Bolt ons from newer 600's?? - Issue I can see is the fuel map not seeing 18,000rpms. So it won't know what to do there. A full remap including changing the rpm points would be required. B) Little tiny iddy biddy turbo?? A CB70 1L 3 cyl turbo one for example. If it flows well at 4,000rpm on that engine. Would an engine a quarter of the size not flow it well at x4 the rpms? So we could easily spool it up by 16,000 to full-ish boost... although you would only want a few pounds as the hi-comp engine won't like too much boost. Any ideas? Or do I really have to face my fear and buy an R6?
To be brutally honest, to put a turbo on a 250 your going to spend more than it would cost to by a newish R6
that is the same reason i love and enjoy my FZR250 these are great bikes and they sound like they shouldn't be on the road they sound like a full blown race bike
Might want to look at this. http://www.feralinjection.com/cbr.html I wouldn’t consider doing such a project. Unless you have a huge pile of money you are willing to set on fire, it’s not worth it. Might as well buy a 600 or 400 and change the sprockets. A turbo has been done to the FZX250 (Zeal) that uses almost the same engine. It was in Rapid and was for sale for about 10k.
The unfortunate thing about turbos are that they kill the exhaust noise you like so much. The turbo is an extremely good muffler at high airflow rates.
As I suspected, ECU would be an issue. Does look like too much effort. I think I'm just disappointed they don't just make the bikes any more. I understand turbo changing noise very well, I have owned 4 turbo cars in my time and one of them I converted to a turbo, just didn't sound the same.... HOWEVER, you certainly can more than make up for a little less growl with ALOT of spool.... Prefer the sound of a turbo sucking in then fluttering as you shut the throttle off... I agree tho, seems R6 is the only sensible option for a newer bike. I just thought I'd pop the question incase there was something my google searching had missed... appears not. R6 it is... I'm scared. <!-- s:cry: --><img src="{SMILIES_PATH}/icon_cry.gif" alt=":cry:" title="Crying or Very sad" /><!-- s:cry: -->
I don’t think I have ever heard someone call an R6 the sensible option. <!-- s:lol: --><img src="{SMILIES_PATH}/icon_lol.gif" alt=":lol:" title="Laughing" /><!-- s:lol: -->
I went for the SV650S as good allround bike. http://www.motorcyclistonline.com/roadtests/middleweight_motorcycle_comparison/
Hey VI, dont give up so easily! You knew everyone here was gonna tell you to buy a bigger bike yet you still posted the q'.... Even though (as people have said in the most discouraging way) you'll need to have money to spend on it, I bet people were saying the same kind of thing to the fella who turboed the zeal... If you know Turbo's well why not have a go? As people have pointed out on other threads, doing anything to dramatically alter fuel/air intakes/exhausts will mean you have to completely rejet the carbs (or something... in fact you'll probably have to modify them pretty heavily to do either of the mods you've mentioned), but there will be tools out there Im sure to help you measure settings to get them right... You can probably tell that Im no mechanic but you'll find people on here will be pretty supportive (and even if they arent, they'll definately be interested!) who generally have helpful suggestions so why not have a go! Yep it will cost! And yep you'll come out knowing better, whether the project runs or not!
If your that keen on getting a bit more power out of your FZR250 i'd highly recommend searching around for a few people who have done fuel injection retrofit's to small bikes. I was reading a while back about a couple of guys who did it on a CBR250RR and said the power gains were very impressive. Your going to have to spend at least $500 on parts and fabricating for a turbo fitout, then on top of that you've got tuning costs. To set up and EFI system it's going to cost you ~$500 if you DIY everything or a bit more if you use a system like a MegaSquirt or a MicroSquirt controller. The way most FZR carbs are these days i think you'd be astonished as to how well the engine can run when properly fuelled. Just imagine a smooth linear pull with similar power to a 400 all the way from about 3500rpm to red line. edit: Just realised that the stuff i was reading about the CBR is the same thing linked a couple of posts earlier in this thread. <!-- s --><img src="{SMILIES_PATH}/icon_redface.gif" alt="" title="Embarassed" /><!-- s --> <!-- s --><img src="{SMILIES_PATH}/icon_biggrin.gif" alt="" title="Very Happy" /><!-- s -->
