pagan1001 wrote:Cheers for that will check out this resistor kit! Here is another I found on the web there are loads of people on about this. But this resistor kit sounds like the best advise yet am going to look for this just now cheers for that.

Ian Daly
Son of Arthur

Join Date: 27-09-02
Location: On t'hill in Kingston
Posts: 3,748
Hi.

It depends on the type of restriction, the one that limits power to 12kW (33bhp) is a restricting washer sat in the rubbers that connect the carbs onto the inlet throats, take off carbs, take out washers, replace carbs to find bike de-restricted.

These bike however, can be restrictred by a speed limiter (for the Japanese market, to roughtly 118mph), this involes some contact in the speedo unit. Once it reaches the limit speed the needle or whatever gives a connection and the two rear cylinders have their spark cut. There are a couple of way to stop this, but let me know whether it's the restriction or speed-limiter that you're having difficultly with.

Are you not listening to anything i've said?

They were NEVER restrcited. The only thing you might come across is a 33bhp UK restriction.

That info is probably off vfr750fd.com, he doesn't know anything.. half the specs on there are just wrong.

That guys just distributing false information, the NC30 was restricted.

http://www.bikechatforums.com/viewtopic ... highlight=

If you read that thread you'll see somebody quote that there restricted from that site.. then a few people who are more familiar with the bike saying the 21 / 24 was never restricted.

It might just be worn. Balancing the carbs will only smooth out the idle.. at full throttle there all open fully so it won't make any difference

CMSMJ1 wrote:Those CDIs are just shite..don't bother.

I'd agree with Neo that these should not be limited,m but if they are, in the same way as NC30s etc thenm you need a resistor in the wiring to fool the CDI into thinking the speedo is not registering any high speeds.

Have a quick search for resistor mod, or PM Leopard Pagan - she makes kits...and sells them on ebay if you must!!

£75 wasted if you buy that CDI...

They arn't... :) I can tell you pretty much what ever wire in the loom does just from the colors! (quite sad I know)

I concur.. the CDI is a complete waste of cash.

The fact your getting 115mph for a start is faster than the 112mph you'd get if it were an NC30... also he describes it as being quite different... wanting to pull rather than just dropping off like a restricted 30 would.

It's either, worn engine, rider too heavy, gearing, bike set-up badly.

It might just be all the engines got to give.

Dont' waste so much on things that arn't true.. spend £30 at a dyno and see how many horses and fuel / air its got and go from there.

Cool will give it a go that sounds like the best idea but yeah you may be right maybe thats all shes got. As I have done the carbs air/fuel mixture done it all to spec. I have done everything to spec that I have come across but dont worry I am listening as I do trust your word. All I am doing is putting on a converter from kph to mph and leaving it at that as I am over 10 stone also. Cheers for all your help but no doubt I will be back for help as am starting to rebuild a second engine for her anyway just cause I love working on it. So I hope you dont go anywhere as I will be needing some info on problems I encounter. Cheers Iain

pagan1001 wrote:Cool will give it a go that sounds like the best idea but yeah you may be right maybe thats all shes got. As I have done the carbs air/fuel mixture done it all to spec. I have done everything to spec that I have come across but dont worry I am listening as I do trust your word. All I am doing is putting on a converter from kph to mph and leaving it at that as I am over 10 stone also. Cheers for all your help but no doubt I will be back for help as am starting to rebuild a second engine for her anyway just cause I love working on it. So I hope you dont go anywhere as I will be needing some info on problems I encounter. Cheers Iain

Lol no worries...

The amount of mis-information about the NC24 really does my head in though at times.. like when people quote that it shares all the same bits as the NC30 etc.

And cool.. if you go the KM/h convertor record the milage on the odometer as any new milage added will be in miles and will throw the odometer out (it'll under-read)

It might well be all its' got but getting it dynod will be the best £30 you ever spend.

You'll get a fuel / air graph so you can see exactly how its runnign and how much power your getting

Yeah will do!!. I have it booked in for next week so will let you know if there are any problems but to be honest whats 10mph anyway. It aint like your going that speed most of the time anyway. And it could just be I am that wee bit heavy. But will let you know how I get on. cheers Iain

just fitted the mph converter but it has totally buggered up the speedo reading does anyone know how to overcome this problem????? Or do I just do without it?

Had to remove the mph converter that I attached to the rear of the speedo it was giving crazy readings for the speed! If anyone has fitted one & got it working please let me know!. I am looking for an exhaust to replace the standard one can any body tell me a good make to go for!?!?. I have only looked at Blue Flame & Scorpion so far but would like to know if they fit straight on & what difference they give to overall performance & their sound. Also if you need to alter the carb setup to fit a new exhaust. If you know any other exhaust manufacturers please respond with your valuable information cheers guys Iain.

Buggard up the speedo how?

I've never used one but from how I gather they work there directional, in other words you have to fit them the right way around or instead of reducing your speedo it'll make it much faster!

This one only fits the one way but I could be going at 100mph and the speedo is only reading 60 or 70mph and going 60 or 70mph and the speedo is reading 30 or 40mph. Its crazy, I have googled to see if anyone else has had this problem but no one has. So I cant get my head around it. The only thing someone did say was maybe its the cable being calibrated towards kph so its going by revolutions then being slowed down by the converter but I dont know about that!. I have just taken it off.But remember how I was on about my bike only doing 120mph well I compared my mph face with the standard kph face and the 180 on the kph face ends at the same place as the 120 on the mph one so could it just be as far round as my needle goes????. But I got the bike hitting the red line in 6th so I think she is okay as I am going to try turning out the carb screws a extra half turn. But I have found a tiny o ring hidden under the water pipe and think it may be from the carbs somewhere? Do they have any tiny o rings in them??????????. If they dont then I am at a lose as to where it has come from. It must only be a couple of mm in size. Anyway let me know if you can think of anything as to why this converter is doing that to my speed. Also do you know if Blue Flame exhausts are as good as they say they are??? Cheers Neo hope you can help. Iain

pagan1001 wrote:This one only fits the one way but I could be going at 100mph and the speedo is only reading 60 or 70mph and going 60 or 70mph and the speedo is reading 30 or 40mph. ..........I compared my mph face with the standard kph face and the 180 on the kph face ends at the same place as the 120 on the mph one

The km/h > mph converter you bought should be used with a km/h speedo face!