99 sa50

[t8kinover.]

hello,
i have a corsa bore i am thinking about installing in my 99.
i have 9:1 gears, high speed vari, sef ramp plate, assorted weights, aftermarket (i dont kno what it is called) i think it is a 1000 rpm clutch spring that adjust the width or the rear pully.

i also have a 28 mm carb with intake.

i had plans of doing a full build. i did not want to start it till i had everything. i needed a cht guage and some jets.

i am not new to scooter tuning just been a while. so my question(s) are ( i plan on buying a cht first) but i want to install the corsa with a stock intake (jetted) uni filter, stock exaust. would that be a bad idea to install?

any sugestions with that?
i could use the 28 mm carb (trying to aviod buying jets for it)
and i want a smaller carb

[mousewheels]

This thread is moved for reason: Technical questions should be posted to Performance Technical thread rather than Builds. The builders are over in this thread too.

[Performance Technical] - Does your Spree/Elite already run great, and you're trying to make it quicker/faster? Need a monster motor swap? Discuss your ideas here.

[t8kinover.]

my bad

[eliteguy50]

Jetted stock intake and exhaust is fine. 28mm carb is big for 72cc.

[t8kinover.]

[t8kinover.]

what size jets should i start with?
uni filter installed.

[scottinscotty]

Sell me your corsa!

[Trafficjamz]

Not using the 28mm because you dont want to buy jets

You will have to get jets for the stock carb too.

28mm carb is big for 72cc.

A 28mm carb would be better than a stock carb.

Why not just build it? you already have all the parts.

9:1 gears will be too short for a corsa

If you like to wheelie, or drag race......9.1's are good.

[eliteguy50]

The stock carb would help choke it down for the gears.

[Trafficjamz]

The stock carb would help choke it down for the gears.

The stock carbs pilot jet would supply very little gas/oil to cool the over reving 9.1 gears.



I would buy some jets and tune the setup you already have.

[veedubh20]

28mm carb work well on corsa. It not because carb to big, some dont know how to tune that why noob.

48-142

18mm mikuni vm carb work well on stock airbox and s pipe.

[t8kinover.]

Thanks for all the replys everyone I did install the corsa I'm running a 98 jet stock carb.
I have not ran it much though and do understand the pilot is small it worries me.
I was going to buy some bigger jets.

Should I Just install the 28mm 130 main with about a 50 pilot.?

I try to keep it out of the idle circuit jet flow when I run it I'm in the habit of not closing the throttle after wot runs on the stock bore

[evilone]

Should I Just install the 28mm 130 main with about a 50 pilot.

55 pilot and 138 main is a better starting point

[Wheelman-111]

Greetings:

For ease of tuning, the OKO 24 and 26 are available at the same price as the 28 at Treatland.tv. About $80 or $85 with shipping. Either one will work better in the low end and I'm not sure a Corsa can use the 28 without a really big pipe. There simply isn't enough demand for fuel, even at the 10.5K RPM mine runs, for a carb that big. Your mileage may vary.

[Trafficjamz]

a 28mm carb will work with even a stock exhaust.