How to derestrict your scooter

RichieB · Post by **RichieB** » Wed May 13, 2009 5:06 am

I have just come across this video by Genuine, walking you through derestricting your scooter. I removed the exhaust restriction last summer, and got about 10 more mph. I can't wait to get my hands on an impact wrench and take the restricter off the variator!! http://vimeo.com/2575002

Nabby · Post by **Nabby** » Mon May 25, 2009 7:22 pm

Great video link. Thanks for sharing!

Nabby

SgtMcG · Post by **SgtMcG** » Sun May 31, 2009 6:35 pm

RichieB wrote:I removed the exhaust restriction last summer, and got about 10 more mph.

I can't see the video where I'm at (damn gov't networks...).

Sorry if these are dumb questions: How did you remove the exhaust restriction... swap the stock exhaust for a custom one? Or is there a way to derestrict it but keep the stock exhaust.

Oh, also, what's your top speed now? Thanks!

RichieB · Post by **RichieB** » Mon Jun 01, 2009 3:41 pm

You remove the exhaust, from where it meets the scooter(underneath). Just drop it down far enough to remove the restrictor.

It's like a metal gasket, that funnels the air flow. There should also be a metal gasket too. It will be easy to see the diffence in the two. Leave the gasket and take out the restrictor. Then re-attatch the exhaust.

In the video it says to add a gasket, but I was fine with the one left. Just check to see if you are losing any air pressure from there once you're done.

My blackcat went 30mph with this restrictor in, and 40 with it out. I'm not a little guy(6'2" and 260lbs).

Good luck!! Let me know how it works for you.

SgtMcG · Post by **SgtMcG** » Mon Jun 01, 2009 3:45 pm

Thanks for the info...

Is it the same procedure w/ the Rattler buck-ten? That's what I'm getting when I get home from Afghanistan.

RichieB · Post by **RichieB** » Mon Jun 01, 2009 3:50 pm

I'm not sure. This was to deresrict any of the genuine 50cc models.

But it wouldn't hurt to look. If there is a restrictor there, take it out. It will definatley make a diffence.

laxer · Post by **laxer** » Mon Jun 01, 2009 4:04 pm

The Rattler's not restricted, but you might think of modding it out!

Spawn · Post by **Spawn** » Tue Mar 16, 2010 4:59 am

new to the board. Great find just what I was looking for on the 50.

scarabeo · Post by **scarabeo** » Fri Jul 29, 2011 5:54 pm

I just de-ristricted my daughters Buddy 50 which I bought from Jonlink from this forum...
One note that I will pass on is in the video the restricter washer looked metallic like those gold colored nuts and bolts you see sometimes...the washer in my Buddy was some kind of plastic piece. Anyways...just like the video, it was pretty simple...just make sure you have the lugged washer which lets you use the kick starter, engaged with the splines before you hand tighten the variator nut...I didn't have it engaged the first time and it started slipping when I started the scooter...I took it apart again and saw the lugged washer was not seated onto the splines....made sure this time, tightened it all up and moved on to the pipe restricter cone. That went like a breeze...except I couldn't get a socket over one of the nuts because the bent pipe was in the way slightly...a 10mm open end fixed that.
Next was the test ride....wow, what a difference! Went blasting up a hill up to 35 and it gets there quickly! On the flat 45 was reached very easily...even with my 275 pound butt on it! I'll wager it'll do 55+ on a long downhill now...we'lll see...thanks for the video!

jono88 · Post by **jono88** » Fri Aug 26, 2011 10:46 pm

So I just watched the video on derestricting my roughhouse. Couple questions:

1. Where can I buy an exhaust gasket after removing the restricted one? Size?

2. Will any rejetting have to be done?

3. When removing the variator can I use an manual socket wrench or do I need an the electric one as shown in the video?

I'm not much of a mechanic, but it looks pretty easy on the video and my dealer won't do it for me as it voids the warranty. Also if anything were to happen could I just re-restrict it before I take it into the dealer?

Lotrat · Post by **Lotrat** » Sat Aug 27, 2011 12:51 am

jono88 wrote:So I just watched the video on derestricting my roughhouse. Couple questions:

1. Where can I buy an exhaust gasket after removing the restricted one? Size?

2. Will any rejetting have to be done?

3. When removing the variator can I use an manual socket wrench or do I need an the electric one as shown in the video?

I'm not much of a mechanic, but it looks pretty easy on the video and my dealer won't do it for me as it voids the warranty. Also if anything were to happen could I just re-restrict it before I take it into the dealer?

Derestricting your scooter will not void your warranty. It's restricted because in some states you are allowed you to ride a restricted 50cc scooter without a motorcycle licence. If you get it derestricted, you are required to have whatever your state requires for a motorcycle (licence, registration, insurance). The dealer should have asked you if you wanted derestricted when you bought it.

spr0k3t · Post by **spr0k3t** » Sun Jun 10, 2012 5:20 am

When doing the derestricting to my 2013 RH50, I did not find a gasket. The restricting washer was a very thin conicular piece, but no other gasket was found. Any ideas on that?

Lotrat · Post by **Lotrat** » Sun Jun 10, 2012 8:11 pm

You need to have #5. You remove #27.

spr0k3t · Post by **spr0k3t** » Sun Jun 10, 2012 9:44 pm

That's what I was saying... #5 was not there. I pulled it apart twice and still nothing.

Lotrat · Post by **Lotrat** » Mon Jun 11, 2012 1:50 am

Then get one. You need to have the gasket there. It's a dollar part.

spr0k3t · Post by **spr0k3t** » Tue Jun 12, 2012 12:45 am

Found the gasket, it was located wedged in the exhaust pipe... but it's not tall enough, so I gotta replace it anyway. Still leaks.

spr0k3t · Post by **spr0k3t** » Wed Jun 13, 2012 3:27 am

So this crimp type gasket will definitely need to be replaced when doing a derestriction on the exhaust. The gasket has been crushed down further than the normal clearance by approximately 1mm. So without replacing the gasket, expect leaks to develop sooner or later.

jwelcker · Post by **jwelcker** » Fri Jun 22, 2012 4:34 pm

spr0k3t wrote:So this crimp type gasket will definitely need to be replaced when doing a derestriction on the exhaust. The gasket has been crushed down further than the normal clearance by approximately 1mm. So without replacing the gasket, expect leaks to develop sooner or later.

What size/type of gasket did you replace it with?

spr0k3t · Post by **spr0k3t** » Fri Jun 22, 2012 6:31 pm

The exact same gasket as the stock gasket. It is a crush/crimp gasket so you should replace it with the same.

jwelcker · Post by **jwelcker** » Fri Jun 22, 2012 6:48 pm

Ah, I see. It's just that the space taken by the restrictor plate crushes the existing one and makes the stock gasket less useful?

thanks for your reply

icarus · Post by **icarus** » Thu Jul 26, 2012 5:22 pm

I just removed the exhaust restriction from RH50 and I've got a few comments and one question.

First, WOW what a difference. The acceleration is much better, I finally feel like I can get out of someones way now. I believe it makes the scooter much safer.

Second, I'm hoping the wet fart sounding leak does go away. I've replaced the old gasket with a new one.

Question, I about ready to tackle the variator, but I don't have an impact wrench. For those of you who have done it with out one, how did you do it? Please be specific, I'd really like to get that ring out, but I don't want to chip the fins on the variator or strip the nut.

Thanks

spr0k3t · Post by **spr0k3t** » Thu Jul 26, 2012 6:15 pm

What I have used in the past is a strap wrench and a breaker bar. It took two of us to do it and it was still a pain. Another way to do it is to use a dead bolt in place of the spark plug (harder to find). You have to be careful with the dead bolt though, it can mar the cylinder head. Your best bet is to just fork over the money for a cheap impact wrench... you will be happy you did.

As for the exhaust, check to make sure it is seated correctly. You want to make sure the exhaust is hanging with the side bolts before tightening down the header.

Steve842 · Post by **Steve842** » Sun Apr 27, 2014 8:43 pm

Hi guys, new roughhouse owner here. I checked my scooter this afternoon to see if already derestricted (and it was) but there is no gasket in there. I went everywhere locally today to try and find one but no luck. Anyone know, will the ones on eBay work?

Such as:
http://www.ebay.com/itm/GY6-50cc-Scoote ... d1&vxp=mtr

ender07 · Post by **ender07** » Sun Apr 27, 2014 11:19 pm

Steve, this thread is pretty old and the last post was from 2012. I'd suggest starting a new thread and letting this one die a nice peaceful death.

Also to answer your question Scooterworks.com should have them...here is a list of the parts from Genuine, the exhaust gasket is on page 23 near the bottom.

http://www.blackbeardpowersports.com/Ge ... k_Peak.pdf

Modern Buddy

How to derestrict your scooter

How to derestrict your scooter

Thanks!

Re: How to derestrict your scooter

Exhaust De-Restricted