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View Full Version : walbro in-tank, little help?



rubberband
12-23-2010, 09:28 AM
hey guys, doing an in tank walbro pump today and just got the old one out. I am a little confused as the new walbro pump i have has a smaller dia pick up port and its a shorter port too(meaning it will not sit as low in the tank as the stock one) I know a lot of you guys are running these so I was looking for a little advice. do you guys just throw a sleeve on there to make up the overall outside diameter of the pump and call it a day?
will i have issues when the tank gets below a quarter tank? please help if you can
thx

biketsai
12-23-2010, 09:37 AM
Pic? I think I tried to throw on that stock pickup filter on there to compensate.

rubberband
12-23-2010, 12:41 PM
well i put it in and it does run well....except it literally shits the bed anything over 12 psi. bucking and surging.
i have a elim kit with a uni 440 tune w/ the 3" intake etc...man i am stumped.

ZimbutheMonkey
12-24-2010, 03:36 PM
What are your A/F ratios after 12 PSI? It's possible that you're running rich with the higher flowing pump.

Polski
12-25-2010, 11:19 AM
check for dents in the metal fuel line, check for kinks in the fuel line inside the tank