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.
Redline Problems
Moderator: Moderators
- Flappy
- Posts: 15
- Joined: Sat Jun 13, 2009 7:48 pm
- My Bike: 1990 ZXR 400
- Location: Cambridgeshire
Redline Problems
Searching for the perfect grin, or at best, a toothless smile.
- extonyg
- zxr400 oc member
- Posts: 405
- Joined: Tue May 12, 2009 9:40 pm
- My Bike: zxr 400 L1 uk
- Location: Portsmouth
Re: Redline Problems
what bike is it?imports are restricted to 10k, what cdi do you have on the bike?
- Flappy
- Posts: 15
- Joined: Sat Jun 13, 2009 7:48 pm
- My Bike: 1990 ZXR 400
- Location: Cambridgeshire
Re: Redline Problems
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
Searching for the perfect grin, or at best, a toothless smile.
- extonyg
- zxr400 oc member
- Posts: 405
- Joined: Tue May 12, 2009 9:40 pm
- My Bike: zxr 400 L1 uk
- Location: Portsmouth
Re: Redline Problems
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
- Posts: 15
- Joined: Sat Jun 13, 2009 7:48 pm
- My Bike: 1990 ZXR 400
- Location: Cambridgeshire
Re: Redline Problems
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.
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.
Searching for the perfect grin, or at best, a toothless smile.
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- CBT slow
- Posts: 734
- Joined: Mon Oct 06, 2008 5:41 pm
- My Bike: zxr400 H2
- Location: essex
Re: Redline Problems
yes removing the speedo will make the restrictor kick in, well im 99.9% sure of it
- RedexRobB
- Site Admin
- Posts: 7212
- Joined: Fri Aug 30, 2002 7:37 pm
- My Bike: ZXR400L3
- Location: Ipswich, Suffolk
Re: Redline Problems
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!lewisdale wrote:yes removing the speedo will make the restrictor kick in, well im 99.9% sure of it
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
- Posts: 15
- Joined: Sat Jun 13, 2009 7:48 pm
- My Bike: 1990 ZXR 400
- Location: Cambridgeshire
Re: Redline Problems
^^ 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
I am now off to the wanted parts section
Searching for the perfect grin, or at best, a toothless smile.
-
- CBT slow
- Posts: 734
- Joined: Mon Oct 06, 2008 5:41 pm
- My Bike: zxr400 H2
- Location: essex
Re: Redline Problems
i think u can put a resistor inbetween the wires thatll do the same thing, redexrob is the man to ask
- Flappy
- Posts: 15
- Joined: Sat Jun 13, 2009 7:48 pm
- My Bike: 1990 ZXR 400
- Location: Cambridgeshire
Re: Redline Problems
lewisdale wrote:i think u can put a resistor inbetween the wires thatll do the same thing, redexrob is the man to ask
Thank you
Searching for the perfect grin, or at best, a toothless smile.