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palaga-2k7
08-14-2008, 07:51 AM
When changing your barrel and piston from rs50 to the 80cc kit would the carb or jets have to be changed to siut the kit.....

Also what exhaust would people recommend to use when using the bigger barrel kit??

Thanks

jackdim
08-14-2008, 07:58 AM
With a 80cc kit you would best be advised to get a bigger carburettor to maximise it's potential (probably 19mm-21mm) and you're best off getting a Dellorto as that's what's most people use and as such can advise you with jetting. If not a dellorto, try OKO, ?Kehnin? or Mikuni.

In regard to the exhaust, best off getting either an Arrow, Jim Lomas or Jolly Moto. They all perform similarly, check the 9 pipe dyno thread at the top of this section.

You also may need to get an aftermarket clutch to cope with the increased power, but I'm not 100% sure. You're best asking other forum members.

What 80cc kit are you planning to use?

palaga-2k7
08-14-2008, 08:03 AM
i put in the mukini kit

jackdim
08-14-2008, 08:05 AM
mukini kit??? Is that a 80cc cylinder kit? Got a link or picture of it?

I've never heard of it? Do you mean a Mikuni carburettor?

williamr
08-14-2008, 08:41 AM
If you keep you current carb you'll probably find that the increased manifold depression from the BBK makes the jetting too rich. If you change the pipe or air filter at the same time they'll tend to make it lean.

You'll have to plug chop to find out your correct jetting, or better still, get a coloutune kit from Halfords.

Rob

mx50boy
08-14-2008, 08:53 AM
If you keep you current carb you'll probably find that the increased manifold depression from the BBK makes the jetting too rich. If you change the pipe or air filter at the same time they'll tend to make it lean.

You'll have to plug chop to find out your correct jetting, or better still, get a coloutune kit from Halfords.

Rob

whats a colourtune kit?

williamr
08-14-2008, 09:26 AM
A device that plugs in in place of the sparkplug and lets you actually see the colour of combustion. It makes for very accurate mixture control.

Rob

jackdim
08-14-2008, 09:28 AM
Is this what we need?

http://cgi.ebay.co.uk/Gunsons-Colourtune_W0QQitemZ290251657324QQcmdZViewItem?has h=item290251657324&_trkparms=72%3A984%7C39%3A1%7C66%3A2%7C65%3A12&_trksid=p3286.c0.m14.l1318

palaga-2k7
08-14-2008, 09:38 AM
ok thanks ill have a look and see...

And the other thing is can you get a seat cowel for the back seat on the rs50

bourney2007
08-14-2008, 01:14 PM
When changing your barrel and piston from rs50 to the 80cc kit would the carb or jets have to be changed to siut the kit.....

Also what exhaust would people recommend to use when using the bigger barrel kit??

Thanks



no not at all. Just shove more air into the engine, increase the displacment, no need to mess with your jets at all:rolleyes:

Ermok_RS
08-16-2008, 04:29 PM
no not at all. Just shove more air into the engine, increase the displacment, no need to mess with your jets at all:rolleyes:
BTW thats Bourney Sarcasm for the op.

It scores

10/10

:)

Well done. You are officially using sarcasm to take the piss out of a stupid question. :)