My_XR6_Turbo Member 282 Member For: 19y 8m 17d Posted 15/04/19 05:45 AM Share Posted 15/04/19 05:45 AM Hi guys, I'm installing a walbro 460 intank pump and I know I need to drill the return line out to 4.5mm. Is this the right one? Can anyone explain what the center one is for as it's blocked? Thanks, 1 Link to comment Share on other sites More sharing options...
BeerTurbo Donating Members 234 Member For: 5y 11m 10d Posted 15/04/19 07:30 AM Share Posted 15/04/19 07:30 AM is this part of the fuel tank setup? I was under the impression you needed to drill out the return hole in the fuel pressure regulator itself, or purchase the bolt in GFB one when installing high flow pumps. 1 Link to comment Share on other sites More sharing options...
BarraT Member 29 Member For: 4y 2m 30d Posted 01/04/24 10:29 AM Share Posted 01/04/24 10:29 AM On 15/04/2019 at 3:45 PM, My_XR6_Turbo said: Hi guys, I'm installing a walbro 460 intank pump and I know I need to drill the return line out to 4.5mm. Is this the right one? Can anyone explain what the center one is for as it's blocked? Thanks, The centre 1 is used to hold it into the bottom of the pot, ( the locking pin ), I drilled mine out to 4mm, certainly quietened down the pump audibly, AFR at idle settled from low 12s to stoich, so it made a difference, though as suggested by BEERTURBO, just buy the GFB drop in reg Link to comment Share on other sites More sharing options...
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