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72cc Corsa setup, help with carb / intake setup.

Posted: Wed Oct 10, 2012 5:18 pm
by Meejacob
Hey guys so I just recently purchased a sym dd50 with the following specs.
Specs:
72cc Corsa
V8 exhaust
Koso temp gauge
7:8:1 gears
Blue clutch spring
Stock carb / Intake

I was wondering what the best carb size would be for quick acceraltion / street use. It'll mostly be an around town bike but I do have one long 20-30 min stretch that is around 35-50 mph so I'd like to keep temps down as much as possible. Would getting a Big Black mani make much of a difference from a regular ct mani on a 72cc?

Within the next 2 weeks, I'll be getting it ported and buying a new carb / intake. So my setup would look something like this when done.

72cc Corsa (Ported and Matched)
V8 Exhaust
Big Black Mani or CT Mani
19-28mm Carb
Koso temp gauge
New clutch spring
New rollers
Kevlar belt

Any help would be greatly appreciated. Thanks

Re: 72cc Corsa setup, help with carb / intake setup.

Posted: Wed Oct 10, 2012 7:42 pm
by bradbutlernc
Generally speaking, a smaller carb is going to provide more low end power, while a larger carb is going to provide better wot performance and top end power.

Re: 72cc Corsa setup, help with carb / intake setup.

Posted: Wed Oct 10, 2012 8:28 pm
by Downsouthdio
I'd run a 21-24mm if i were you.. Regular ct mani is fine.

Re: 72cc Corsa setup, help with carb / intake setup.

Posted: Fri Oct 12, 2012 2:00 pm
by kryptonite
yea i agree 21-24 flat slide carb is good, im leaning toward 24 :)

-Ben

Re: 72cc Corsa setup, help with carb / intake setup.

Posted: Fri Oct 12, 2012 8:05 pm
by Downsouthdio
Yea man, thats what im trying to get my hands on.. Have a 28mm to offer as trade..

Re: 72cc Corsa setup, help with carb / intake setup.

Posted: Wed Oct 17, 2012 5:15 am
by Meejacob
In the shop as of today getting new carb/intake along with being ported, both intake and boost. ill get pics when i get it back. I forgot to ask when i was at the shop but does anyone know how i would be able to lower or drop the bike a little without having to buy $250 drop shocks?