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Jetting following addition of a reed valve?

Posted: Sun Mar 01, 2015 4:37 pm
by alanscottj
Been out for first rideout today after fitting reed valve. Scoot is running great and egt and cht is in a good place. I was told that I would have to up jet after adding the valve, as my scoot was already running rich I think it is ok in terms of main jet. But, when I was on the rideout and started her up to leave she stalled twice and was difficult to restart. Once it started I had to run with choke on for a minute or so to keep her going. Once I got going she was running pefect.

So, given that I have added the reedvalve what recommendations has anyone got in terms of my jetting? Needle clip position etc.... Carb is a delly 30mm PHBH.

Any thoughts muc appreciated as always :-)

Re: Jetting following addition of a reed valve?

Posted: Sun Mar 01, 2015 5:13 pm
by Norrie Bodge
have you altered the piston & added boost port in cylinder too alan?

gonna eventually change to 30mm Delly from Amal & a mate of mine suggested this for starters
X7 Needle
Av244 Atomiser
55 Pilot
125main

Re: Jetting following addition of a reed valve?

Posted: Sun Mar 01, 2015 7:23 pm
by alanscottj
[quote="Norrie Bodge"]have you altered the piston & added boost port in cylinder too alan?

gonna eventually change to 30mm Delly from Amal & a mate of mine suggested this for starters
X7 Needle
Av244 Atomiser
55 Pilot
125main[/quot


Yes mate, boost port and piston has had windows and skirt cut. Runs great but not great starting.

Re: Jetting following addition of a reed valve?

Posted: Sun Mar 01, 2015 7:27 pm
by Muppet
266

Re: Jetting following addition of a reed valve?

Posted: Sun Mar 01, 2015 8:06 pm
by alanscottj
[quote="Muppet"]266[/quote

266 ???

Re: Jetting following addition of a reed valve?

Posted: Sun Mar 01, 2015 8:25 pm
by Muppet
ya have av244 :? mabee it is av264 try av266 mite be betta ;)

Re: Jetting following addition of a reed valve?

Posted: Sun Mar 01, 2015 8:47 pm
by alanscottj
For poor starting would I be looking at the pilot?

Re: Jetting following addition of a reed valve?

Posted: Sun Mar 01, 2015 8:55 pm
by squeakmillward
for about £80 I would get it on the dyno cheaper than a holed piston or seize

Re: Jetting following addition of a reed valve?

Posted: Sun Mar 01, 2015 9:27 pm
by alanscottj
squeakmillward wrote:for about £80 I would get it on the dyno cheaper than a holed piston or seize
I think I'm set up safe through the Rev range. According to my EGT and CHT I am ok. My temp never went over 530 whilst sitting at 65, my only issue is when starting.

Re: Jetting following addition of a reed valve?

Posted: Sat Mar 07, 2015 4:59 pm
by Norrie Bodge
Did you get your jetting all sorted Alan?