Page 1 of 1
Jetting dr180
Posted: Sat Apr 06, 2013 7:02 pm
by djh66
Trying to jet a px dr 180, with a 20/20 carb. The problem is it starts fine (with choke) and will tickover when choke is pushed in. But when I increase the throttle it burbles and dies, it will, if I give it a fist full, it will run at high revs. It seems to be between tickover and high revs. (this is done on the stand)
160 air corrector
BE3 mixer
106 main
55 160 starter
standard exhaust
Re: Jetting dr180
Posted: Sat Apr 06, 2013 7:41 pm
by cit205
Would have thought that would be better off with a 24/24e carb .
Has it got a fast flow tap?
what is the standard starter ,that sounds like a px200 one ,maybe it is flooding up ,try the original 50 starter/pilot or whatever it was
Re: Jetting dr180
Posted: Sat Apr 06, 2013 7:53 pm
by djh66
cit205 wrote:Would have thought that would be better off with a 24/24e carb .
Has it got a fast flow tap?
what is the standard starter ,that sounds like a px200 one ,maybe it is flooding up ,try the original 50 starter/pilot or whatever it was
Fitted SIP fast flow today, as I say, its' ok at high revs, it's in between tickover and high, seems to be the problem. The engine came with that carb, apparently, all set up!
Re: Jetting dr180
Posted: Sat Apr 06, 2013 8:59 pm
by Bofs
Done a few of these conversions and using the standard 20mm carb like yours, great cheap upgrade for a 125. Only thing I changed was the main to 106/108, so as Ben says maybe sort the rest of the jetting back to PX125 spec...check scooterhelp.com
http://www.scooterhelp.com/scooters/VNX2T.px125e.html
Re: Jetting dr180
Posted: Sat Apr 06, 2013 9:08 pm
by djh66
thanks for help, will play tomorrow
Re: Jetting dr180
Posted: Sun Apr 07, 2013 1:03 pm
by djh66
After playing!! I'm still beat. It just tries to die when I up the revs from tickover. I tried a smaller idle jet 52/140, but made no difference. I checked to see if the fuel pipe is kinked, but that seems ok. Don't know what else to try?
Re: Jetting dr180
Posted: Sun Apr 07, 2013 5:21 pm
by djh66
Wey, hey sunbeam! Took the carb off, stripped it down, cleaned it all thoroughly and blew out with comp. air, reassembled, now no problems, infact it flies
Re: Jetting dr180
Posted: Sun Apr 07, 2013 7:45 pm
by cit205
Re: Jetting dr180
Posted: Mon Apr 08, 2013 7:55 am
by cit205
Is this on the sportique sticking with 8" wheels job you were working on?
Re: Jetting dr180
Posted: Mon Apr 08, 2013 8:08 pm
by djh66
cit205 wrote:Is this on the sportique sticking with 8" wheels job you were working on?
Yes, got the SIP conversion kit, that keeps the original 8" wheels. PX 125 engine, with a DR 180 kit, which also came with a mallossi upgear kit. SIP fast flow tap, new nylon lined cables.
