Quick Question On After Derestriction

JakeyC · Scooby Slapper Joined: 21 Jan 2005 Karma :

getting an nsr 125 r 03. After browsing the workshop i noticed lots of people saying there engine has blown after a d. restriction. Is this due to it being done improperly or is derestriction a fast way to kill your nsr? also when i am planning on drestricting mine, i am just going to do the exhaust drilling the welds and the air intake. Will this be ok, or is it going to go boom? Shocked

Ste · Not Work Safe Joined: 01 Sep 2002 Karma :

If your engine blows up after you de-restrict it then it's either unrelated or due to doing something wrong when de-restricting it.

The engine is designed and meant to run full power and for it to be legal in the UK they had to stick the two restrictors in, so taking them out isn't going to cause problems.

It'll be fine with you de-restricting it assuming you don't do anything wrong but the guide on nsr125.com explains everything.

JakeyC · Scooby Slapper Joined: 21 Jan 2005 Karma :

thanks buddy Thumbs Up

JakeyC · Scooby Slapper Joined: 21 Jan 2005 Karma :

oh and one more thing, so what can i do wrong if i follow the guide on www.nsr125.com that will cause problems? i think me and my dad can do it, but what do we have to watch out for??

tokarev · World Chat Champion Joined: 20 Jan 2005 Karma :

Hi,

I own an NSR (as you can see in my avatar) but what difference will be felt if it was derestricted? would it pull away alot smoother and quicker?

I know it will have a quicker top end speed, but i am not too bothered about going 90ish miles per hour and getting caught by the police! (most of my travelling is done in and around london anyway). If it pulls away from traffic lights alot quicker and smoother then i might want to do it.

Mine is not derestricted, but i was thinking of having a go at derestricting it in the summer with the help of a mechanic friend as a kind of project. Basically is it worth it? I plan on keeping my bike untill the summer of 2006.

JakeyC if yours is an import NSR then it may not have some of the restrictions shown on nsr125.com. I think imports have restrictions in the CDI.
Not too sure.

Cheers!

Thumbs Up

fuzz · World Chat Champion Joined: 24 Mar 2004 Karma :

Derestriction may add about 10mph on top, but the main difference is the acceleration. It should rev easier and therefore get into the powerband a lot sooner. I've ridden my mates NS125R which was restricted and he left me standing when he took off on mine Cool

Once you get to about 40mph, the restricted bike will struggle getting higher, but the full power bike will continue to take off up to 80.
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Bikes: '99 NSR125R, '00 SV650S, K1 GSX-R600, '97 CB500, K3 SV1000S, '16 VFR800

Ste · Not Work Safe Joined: 01 Sep 2002 Karma :

A de-restricted bike will do just over indicated 100mph and a restricted bike indicated 80mph so it does add to your top speed.

TheShaggyDA · Repost Police Joined: 14 Jun 2004 Karma :

JakeyC · Scooby Slapper Joined: 21 Jan 2005 Karma :

any way no my nsr is not an import but i am really looking forward to having it done for my half term hols now Laughing