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Installing an aftermarket fuel pump.

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Old 07-12-2014, 07:10 PM
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jimbos'ss
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Default Installing an aftermarket fuel pump.

Well just got my Mcleod twin disk installed, next up is the fuel pump install before I start the twin turbo build. I have one of the Walbro 400LPH pumps that i'm installing. I'm on the fence between cutting the bucket open at the bottom and running the sock out there or building a stainless steel hangar to hold the pump.
I'm looking for pictures of how people have modified the stock bucket to run aftermarket pumps since it won't work with the way the bucket functions.
If you have pics of how you modified the bucket for the fuel pickup please post them. Also if you built your own pump hanger instead I would like to see pics as well.

Thanks
Jim

P.S.This is an 01 so it has the bucket that's on its side.

Last edited by jimbos'ss; 07-12-2014 at 07:28 PM.
Old 07-13-2014, 03:10 AM
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Jon aka JDS99 on here modified the stock hangar i believe.
Old 07-13-2014, 09:48 AM
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I've talked to Jon about it before, he's the one that enlightened me to problem. I'm just hoping someone has a decent picture of how they ran theirs. I'm starting to think fabbing up a custom hanger might be the best thing to do. My biggest concern is fuel starvation under heavy cornering and I think the stock bucket system is designed to handle that best.
Old 07-13-2014, 08:01 PM
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my buddy modified his stock hanger to hold 2 walbro 255's.
Old 07-13-2014, 08:42 PM
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Originally Posted by jimbos'ss
I've talked to Jon about it before, he's the one that enlightened me to problem. I'm just hoping someone has a decent picture of how they ran theirs. I'm starting to think fabbing up a custom hanger might be the best thing to do. My biggest concern is fuel starvation under heavy cornering and I think the stock bucket system is designed to handle that best.
What does it do to help? Is it the pump that's tied into the sock that sucks it in? I never really paid attention what that's for or it's purpose or why can't you get rid of it
Old 07-13-2014, 09:54 PM
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Originally Posted by Chicago1
What does it do to help? Is it the pump that's tied into the sock that sucks it in? I never really paid attention what that's for or it's purpose or why can't you get rid of it
The pump siphons from the tank to the bucket and the pump then draws the fuel from inside the bucket and sends it up the fuel lines. It's supposed to keep the pump submerged to prevent fuel starvation during hard or lateral acceleration. Unfortunately there is no aftermarket alternative bigger than the GRJ420 pump which is only 255LPH.
Old 07-13-2014, 09:55 PM
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Originally Posted by idontknow
my buddy modified his stock hanger to hold 2 walbro 255's.
Do you have any pics?
Old 07-13-2014, 10:34 PM
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Hey Jim, i'm wishing now that I would have snapped a few pics before putting it back in the tank.

You're going to lose the use of the bucket in either case, so if it makes it easier for you to mount the pump in the bucket with the bottom cut out then by all means. Otherwise weld a stainless bar to the bottom of the hat and mount the pump on that. Just double check your filter height and location when installed either way to make sure it's not sitting flat on the bottom which would choke it off, or too elevated that you would lose effective capacity.

Upgrade your wiring while you're in there to the heavier gauge from Racetronix.

As long as you keep the siphon effective, and don't bridge the tanks, then the drivers side tank is always going to be full until you get under 1/2 tank. I would say even in hard cornering, there's no way you're going to starve unless you're under 1/4 tank (drivers tank with pickup still 1/2 full). So if you're going to do some spirited turns, just stay over 1/4 tank and don't worry about it.
Old 07-13-2014, 11:05 PM
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Originally Posted by JDS99
Hey Jim, i'm wishing now that I would have snapped a few pics before putting it back in the tank.

You're going to lose the use of the bucket in either case, so if it makes it easier for you to mount the pump in the bucket with the bottom cut out then by all means. Otherwise weld a stainless bar to the bottom of the hat and mount the pump on that. Just double check your filter height and location when installed either way to make sure it's not sitting flat on the bottom which would choke it off, or too elevated that you would lose effective capacity.

Upgrade your wiring while you're in there to the heavier gauge from Racetronix.

As long as you keep the siphon effective, and don't bridge the tanks, then the drivers side tank is always going to be full until you get under 1/2 tank. I would say even in hard cornering, there's no way you're going to starve unless you're under 1/4 tank (drivers tank with pickup still 1/2 full). So if you're going to do some spirited turns, just stay over 1/4 tank and don't worry about it.
I appreciate it as always Jon. I try to keep the car above half unless I'm going to the track so then I should be good. I just don't want to dive into the pump install and realise I needed something and have to find a way to work....DD problems...Anyhow i'll quit being a little girl and just get it done. I'll take a few pics for and post them up. Seems it's pretty rare.
Old 07-13-2014, 11:27 PM
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Originally Posted by jimbos'ss
I appreciate it as always Jon. I try to keep the car above half unless I'm going to the track so then I should be good. I just don't want to dive into the pump install and realise I needed something and have to find a way to work....DD problems...Anyhow i'll quit being a little girl and just get it done. I'll take a few pics for and post them up. Seems it's pretty rare.
Easiest way since your'e just going to do one pump is cut the bottom out of the bucket.. leave the rubber grommet that establishes proper bucket height off the bottom of the tank.. cut a couple holes on the side of the bucket to pass some clamps through and clamp the pump to the bucket. Be sure to get some new hose and clamps to connect it. I like the OE style teflon tubes with oetiker clamps. Will need oetiker clamp pliers, but those can be had at home depot/lowe's/amazon/etc.. Much better than rubber hose and worm clamps in my opinion.

hoses:
http://www.racetronix.biz/items.asp?...atus=0&Tp=&Bc=

clamps:
http://www.racetronix.biz/itemdesc.a...CLMP12%2E3&Tp=
Old 07-13-2014, 11:34 PM
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I prefer that style of hose as well. I have to check to see what I have on hand right now. I know I have a few different socks, hoses and clamps.

Anyone know what type of plastic the bucket is made of that's fuel resistant?
Old 07-28-2014, 08:21 AM
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Finally got around to installing the Walbro 400 LPH pump. Once I got everything disassembled I cut the old canister pickup and check valve off the bottom. I inserted the pump and used the 45 degree sock from Deutscheworks. I put the top piece back on the pump forcing it down till the pump was snug( about a quarter inch further than stock). After that I used some fuel resistant glue to make sure it held. I put it all back together, and it runs just like the stock pump. When I get home I'll edit this post and break down the text and pictures, doesn't work well on the phone.
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Old 07-28-2014, 09:07 AM
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looks good I'm not sure what I see that you cut though?
Old 07-28-2014, 09:35 AM
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Originally Posted by Chicago1
looks good I'm not sure what I see that you cut though?
Look at the second pic and then the second to the last pic. Where I put the filter sock through was the factory inlet and check valve.
Old 07-28-2014, 10:09 AM
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this modification doesn't affect jet pump operation does it? I have been looking at that pump for a while now.

Also, how loud is it?
Old 07-28-2014, 10:15 AM
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ahhh I see now. You broke the tabs off the sending unit is that what the zip ties where for? How did you get the lid/hat off? I have taken mine out 2 or 3 times and each time is a beast to pop it off that lip inside.
Old 07-28-2014, 11:03 AM
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Originally Posted by Chicago1
ahhh I see now. You broke the tabs off the sending unit is that what the zip ties where for? How did you get the lid/hat off? I have taken mine out 2 or 3 times and each time is a beast to pop it off that lip inside.
yeah, caught the lever arm while removing the bucket. I have a t-handled hook that i use on one side, while i use a screwdriver to push down on the opposite side. Takes about 10 seconds.

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Old 07-28-2014, 11:07 AM
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Originally Posted by HardcoreABN
this modification doesn't affect jet pump operation does it? I have been looking at that pump for a while now.

Also, how loud is it?
Idk about your first question as i don't really understand the term. I can't even hear the pump it's so quiet.
Old 07-28-2014, 12:53 PM
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Originally Posted by jimbos'ss
yeah, caught the lever arm while removing the bucket. I have a t-handled hook that i use on one side, while i use a screwdriver to push down on the opposite side. Takes about 10 seconds.
I have the same thing
Old 07-28-2014, 11:48 PM
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Just curious what does everyone thinks this pump will support with the stock returnless fuel system and 80lb injectors?


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