Dropped in.The fittings can be clocked which is nice. Still need to wire in the power
Did you put a stock sock back on the new Walbro 450? I found that without it, even with the tank very full, starvation happens easily.
The sock disperses the suction and prevents a vortex from forming, otherwise the pump literally generates a mini tornado in the center sump area and cavitates, yes it moves that much fuel!
Another wild attribute of this pump, is its ability to PUMP lol. Seriously, when I've used it to evacuate fuel from the tank, it will pump good volume in free flow/non restriction into a gas can for about 15 seconds, then start to cavitate. The damn pump can literally clean the sump area of the tank faster than the trap doors canq allow fuel to flow back in hahaha.
You then have to stop the pump, wait 15 seconds for fuel to flood the turbine area of the pump again, and reconnect power to it, only to get another 15 seconds of pumpage.
Its a beast of a pump in free flow, no issues though once its properly restricted having to fight a fuel pressure regulator, so long as the pump has a sock.
Otherwise, you'll need to fill the sump with fuel cell foam or similar. But a new stock sock flows just fine.
Also, beware of the cheap 90 degree socks that come with certain pumps, they dont work as well as the OEM 45 degree angle ones that sit flush on the bottom of the tank.
Sure the 90's are a sock to stop vortexes from forming, but because those cant sit flush on the tank bottom, it leaves a lot to be desired when fuel levels drop to about 1/4 tank.
45's FTW!