Відео

Thank you! I know what you mean but I actually kind of like the wiring there. Its the only place in the bike where the new harness is visible and I'm very proud of my new harness so I don't really want to cover it up. :)

@@twillinger I can respect that. Do whatever you wish. You spent the hours to get that to this stage. So you can showcase your work, and can see where you're coming from. Just my 2 cents.

A bit late I know sorry! The shock is a S46HR1C1 base. The key thing is that the top mount cannot be aluminium as there isn't the clearance to the frame for an aluminium top mount. Really, I just dropped the bike into the local Ohlins dealer and left them to spec and manufacture the shock how they saw fit. Hopefully you get sorted with yours!

Hi. The only parts I fabbed were the wheel spacers. Everything else fitted with different sized bearings. The top stem bearing was special as the standard size is a bespoke Honda size so I needed to find something with the ID of the Suzuki stem and the OD of the Honda bearing. I did have to cut away part of the nose fairing and false air ducts to give some clearance. More details and photos of the conversion in this forum post: www.cbr250.com/threads/project-cbr250rri.7307/post-294714.

@@twillingeryep just finished the whole process, works great, just needs about 5mm more steering angle to clear the handle bar lock. I’m really interested now in potentially designing a new airbox that uses the ram air ducts on the sides of the fairings but I’m not sure if I should stick with using carbs and if that will work well enough, or take the weight penalty and try and make a EFI system based of yours for it. Should definitely help top speed power with that extra 1psi of air pressure 🤣

Thank you! Its been a great ride. :)

Thank you! Yeah I'd never want to tally up the man hours cost...

Thank you!

Yep! I am. :)

(A) where is his youtube user name and (B) he better document the fzr250

@@AdamMc.R1 He is not a UA-cam contributor . The post five months ago described research he was doing as well as the resultant prototypes of project Tyga 22 . He keeps his expertise close to his chest to a certain degree as he had honours at university . I cannot tell him what to share with the wider community . This is his decision , not mine . I had a lady friend convert the Yamaha FZR 250 series workshop manual to English for me a couple of years ago . I have a copy as does the mechanic friend. We had the Suzuki GSX-R 250 books done also . This allows us to do special refining work with a platform to work from . I do not upload anything to UA-cam as copyright theft is commonplace & it is poorly moderated .

The Yamaha FZR 250 3LN1 was converted to 98 octane fuel optimised configuration but with standard grade new engine components with the EFI conversion & the Microsquirt system applied . Compression ratio was raised from 12.0 to 1 TO 13.5 to 1 . The same as the two MC22's . I will ride this set-up on Monday 11th April . We have acquired a second FZR 250 3LN1 which is white & light blue which we will refurbish so that I can use it for private transport . It will be handed to me on my next birthday . A cylinder head had to be made up overseas & sent here for some machining to achieve the compression ratio change . The same had to be done for the MC22 Tyga's . This was the reverse of the changes from earlier 1990's MC22 models to the watered down 'R' series of 1994 . The black 3LN1 was upgraded , the white & light blue one for my private use will be close to standard with minor refinements only .

Nice! Sounds like some really interesting projects. If he ever decides to put any info on them online then be sure to link to it. :)

Can u please send me more info about that proyect? I'm reaally interested

Yes. The engine is still the original engine.

Hi. Yes I have kept all the original parts. The original plan was to keep the modifications 100% reversible but recently I have not been sticking to that rule. The bike is never going back to stock!

Thanks mate!

Thank you!

Looks like around 15 seconds

In the description he says 14.4s for the 1/4mile

Glad it can be of help. Do share progress on your bike as you go along. I'm always interested in other projects. :)

Thank you!

Hi Mark. I have used the original carburettors and modified them to take the injectors and fuel rail. I have a few posts on the process in my blog. www.cbr250rri.com/2014/01/throttle-bodies-wiring.html www.cbr250rri.com/2014/01/tps-mount-plumbing.html www.cbr250rri.com/2014/03/throttle-bodies.html www.cbr250rri.com/2014/03/final-assembly-wiring.html www.cbr250rri.com/2015/08/permanentisation.html

@@twillinger excent videooo!! Thank for inf., saludos desde lima perú 🙌

Hi. Im afraid not. All it does is change how the fuel metering and spark timing is controlled

I couldn't tell you to be honest as I never dynoed the bike before doing the conversion. I wouldn't expect it to lose power though nor gain any either for that matter.

@@twillinger going efi should theoretically allow you to have better control of the fuelling through a wider rev range resulting in more power and better efficiency- depends how much you tune it though- paticularly if you figure out a way to run coil on plug or similar

Good job lot of work maybe slide carbs would have been easier and better! But maybe that wasn’t the point. Well done ! I built drag bikes.

@@mikepeterson6527 Thanks. Yeah the point of the project started out with learning about EFI and engine control and I've managed that. :)

Inline

Hi. I don't tend to do a lot of videos so I can't guarantee an update will come via youtube any time soon. I do have most updates recorded in my blog. projectcbr250rri.blogspot.co.uk/

Thank you very much! If you do do an update somewhere else please link me. I would love to see!

@@damonholmes9299 It has been a long time coming. Sorry! But I do eventually have an update video. ua-cam.com/video/lyuukTxcvQs/v-deo.html

Hi. I'd love to have a read of that blog if you have a link to it? Always interested in different people's approach to problems. For sure, the bike seems to have taken to the modification very well and I will certainly not be reverting it back to carbs any time in its lifetime. I have so much more control over the engine and the datalogging capability of the ECU really helps with understanding what is going on.

projectcbr250rri.blogspot.com.au/

Haha! Cheers lad. That's actually my own blog. Same bike! :)