Redline Problems

[Flappy]

Would someone be able to help please. I bought my bike pretty much stock, other than a Scorpian exhaust system and if I am right, the bike has a SP engine replacement due to the original engine being blown. As I only use the bike for Sprinting and the first time out on it was at a 1/8 mile sprint, it was not rode to its full potential.

I rode at Weston Zoyland yesterday in Somerset which is a 1/4 mile strip. The bike is hitting the limiter at 10k instead of redline 14k. The previous owner of the bike was also there and She said there must be a problem because when She rode it, it always went to 14k.


What have I done to my bike , all I have done is changed the front sprocket, from a 17 to a 14 tooth.


Please help

Regards
Sean.

[extonyg]

what bike is it?imports are restricted to 10k, what cdi do you have on the bike?

[Flappy]

Not sure on the cdi.It is a 1990 H2 but the original owner said she had it revving to 14 before selling on to me so now I am confused , which dont take alot

[extonyg]

just because she said doesnt means it does, have a look at the sticker on the cdi that can tell you if its a restricted cdi im sure theres a thread on here showing all the different types of cdi, i think imports have a restrictor in the clocks as well or something im not quite sure though

[Flappy]

True.

Cheers for that, now you mention clocks, it has me thinking. I removed the speedometer clock as I have no need for it in sprinting, would that make a difference? but I will check the cdi.

Sean.

[lewisdale]

yes removing the speedo will make the restrictor kick in, well im 99.9% sure of it

[RedexRobB]

yes removing the speedo will make the restrictor kick in, well im 99.9% sure of it

Exactly. The 10k rev limit is a default setting if the speedo isnt plugged in to stop you doing more than 110mph, if your in japan anyway cos thats the rules!

What you can do is cut apart the clock and remove the speed restrictor circuit and plug that in in place instead of the whole clock. Might wanna wrap it in something waterproof tho. Heres what Baz did

http://www.zxrworld.co.uk/zxr400/revlimiter.html

[Flappy]

^^ Cheers for the great advice. Really appreciate it....................................now what did I do with the speedo, I think I binned it

I am now off to the wanted parts section

[lewisdale]

i think u can put a resistor inbetween the wires thatll do the same thing, redexrob is the man to ask

[Flappy]

i think u can put a resistor inbetween the wires thatll do the same thing, redexrob is the man to ask

Thank you