Thank you for the straight answer Chrisi! Iíve bought a spare china manifold atm and Iím gonna see how I get on doctoring that to get this new carb to fit.
Iíve received the 17.5 dellorto phva now and was just wondering what goes where. First picture is where I think the fuel line to the tank goes and then the second picture I think the red circle is an overflow nipple so just route lines leading down to the floor? Iím stuck for what the blue circle is though. Itís a threaded hole but itís blocked off at the end. Is this redundant or am I missing something? Thanks a lot.
The blue circle is a left-hand provision for the air / fuel mixture screw as those carbs come lefthanded aswell as right handed...
The factory setting for the a/f mixture screw is 3 5/8 turns out from fully turned in..
Idle screw is 4 turns out
Needle clip is center position
The fuel inlet is next to the choke and don't unblock ant inlets that come blocked off..
The only time you block that fitting on the opposite side off is in karting as kart engines run off of an external vacuum activated fuel pump to feed the carbs when not running a pumper carb and if they didn't run a pump they ran a pressurized fueltank...
We cut out the middleman and went with carbs with pumps built-in and used case pressure to control them..They were finetuned by adjusting pop-off pressure...ÖÖÖ..
This kart is a vintage 60's model and the engine is a 137cc IAME engine that runs on methanol...I raced this in the early 80's and still have it.......LOL
I also have a Jr Kart w/100cc engine too
Your gonna have problems if you don't give that fitting 6-7 inches of hose and just let it hang as it also helps put gravity on the float to balance it when the carb is gravity fed....