replacing the in tank pump

[lostforawhile]

after the terrible luck i've had with the stupid in tank pump, i've decided to go with the Walbro pump under the body, it's a diaphram type pump and is very much like the old AC pumps that were used with SU's for decades. the main problem with the setup is the fuel outlet is on the top, this series of the Walbro pumps has a dry lift capability of two feet, that means even if the hose is empty, it can suck the fuel two feet straight up to the pump if needed. once fuel reaches the pump it has a prime anyway, most pumps are damaged if they run dry like this. This is one of the only pumps i've seen that can pull fuel not just push it. This is my solution to locating the pickup in the tank in the correct position, and being able to use a factory pump sock.

first I machined this aluminum adapter to replace the pump, this will locate the pump sock in the correct position in the tank, i cut a groove in the body for the hanger clamp,

I moved the sock up slightly, for some reason it sits against the tank, and restricts flow



First I milled it out at 3/8, then I used a tapered 7/16 reamer to ream it for the pipe threads, the other side was milled out at 3/4 for the adapter for the pump sock



this is the sock adapter, I took a 1/4 aeroquip coupler, machined one end to fit the pump sock, and cut a retaining groove, the other end was machined to 3/4 and pressed into the other piece, then tig welded

[89T]

Nice but just do a intank walbaro. It will keep it running cooler.

[lostforawhile]

Nice but just do a intank walbaro. It will keep it running cooler.

they don't make a 2.5 psi in tanl walbro, i'm going to be using one of the FRA series on demand pumps, those are like the ones on brittish cars where you hear the pump at idle, click......click.....click.... these are super reliable pumps, I shouldn't have any isues with heating, they even went to electronic points in the pump so no more point failures.

[2ndGenGuy]

The 1st gens have those click... click... click type pumps. Ichiban's caught fire and lit up his whole car.

[89T]

My bad, I forgot about the carb.

[lostforawhile]

The 1st gens have those click... click... click type pumps. Ichiban's caught fire and lit up his whole car.

strange, i wonder what happened to it? thats pretty rare