B6 Aeromotive 340 fuel pump upgrade

[Wet0willy01]

I am in the process of installing the Aeromotive 340 Stealth in tank fuel pump into my quattro b6 fuel tank. I planned on running the 034 drop in pump until my premature turbo failure prompted me to purchase a new turbo that would require a higher flowing pump. I will be updating my progress here so others can possibly do the same for themselves as a cheaper solution to the alternative drop in set ups OR if they need more fuel than the current drop in pumps allow.

Some back ground info on the 340 Stealth pump...

LINK TO AEROMOTIVE PDF
http://aeromotiveinc.com/wp-content/...1140_41_42.pdf






The Aeromotive 340 Stealth Fuel Pump is a high-output, in-tank, electric fuel pump that fits most popular EFI applications. The Aeromotive 340 is a compact, lightweight pump that bolts into many existing hanger assemblies. (to find your vehicle, see the applications guide below)

What sets the 340 Stealth Pump apart is its superior flow throughout a wide pressure range. Compared to other popular aftermarket pumps, at 40 psi the 340 boasts more than 340 lph. That’s over 30% more flow. This pump is ideal for applications requiring more flow while retaining the factory lines and mounting provisions available in the Original Equipment (O.E.) configuration. The 340 is also perfect for use as a universal replacement for applications that require more flow to support forced air power adders such as turbo and supercharged applications.

• P/N 11140 (center inlet -111041 and 11142 are offset inlets)
• Fits most vehicles where popular aftermarket pumps are applicable
• Center Inlet
• Includes universal filter sock – may not fit in some applications (see OEM filter
replacement recommendations)
• Designed for in-tank use only
• Can be used in Carbureted or EFI applications
• Turbine pump mechanism increases durability and can be used in pulse modulated applications.







The Aeromotive is 39mm dia by 120mm in length as compared to the 040 which is 60mm by 169mm or the 044 at 60mm by 196mm


Here is a few comparison photos between the OEM pump and cradle, the Aeromotive pump, and the 034 pump (Bosch 005 or 040?) and cradle

OEM vs 340



OEM vs 034


Cradle comparisons between 034 and OEM



340 vs OEM vs 034


OEM pump in OEM cradle vs 340


340 mocked into place on the OEM cradle using the foam insulating sleeve supplied with the 340 Pump (needs to sit lower into the cradle than in this picture BTW)



I currently have taken measurements on how low the pump inlet is on the OEM pump/cradle assemble. I am going to see my machinist tomorrow to perhaps make a sleeve that has a clamping collar on top to allow the pump to "snap" into the OEM cradle JUST like the OEM pump. By the looks of things if you truly wanted to, you could insert the 340 pump into the foam sleeve and then into the OEM cradle and use perhaps a hose clamp to keep it from falling down any further and call it a day. I however do not want to go that route. The OEM plastic pump outlet hose will also fit right on to the 340 pump outlet (build in check valve also btw) and a hose clamp will secure it just fine. I however may look into a different hose and bulkhead solution to pass through the fuel tank cap in the future. I will also be adding 10 gauge wire to supply the pump via with an additional relay to accommodate its current draw needs. I will try to document everything step by step so others may do the same.

More info to follow once I talk it over tomorrow and the machine shop.



Edit-

Additional informational thread concerning fuel pumps (Eurocode, 044, etc ) thanks to David
http://www.audizine.com/forum/showth...ailed-the-test!!!!

[Dan[FN]6262]

nice

it'll fit rreeaaallllll nice, especially compared to my 044 lol

[killa]

I looked into that, I'm sure it works fine

[Shayneduboulay]

Good work Andrew hope this works out well.

[Wet0willy01]

Dropped everything off Tuesday with my machinist. We discussed my idea/ design for adapting the 340 into the OEM cradle. The pump inlet will sit at the exact depth the factory pump did. The pump outlet is vertical on the Aeromotive pump, but I verified that if you properly orient the pumps outlet (towards the front of the car) there is no fitment issues. The factory fuel line from the pump to the tank cap transfers right over the the Aeromotive pump.

We also discussed different materials, including UHMW (Ultra High Molecular Weight Polyethylene) but some brief research showed that Hydrocarbons (gasoline, oil, kerosene, etc) with cause swelling. So we are going you likely use stainless steal or possibly aluminum. I'll be checking in with him tomorrow to see if he's had a chance to make any progress on it. He's doing this on the side in his home shop and I'm not in a rush. So it maybe a while till I have anything to update.

[drjonez]

Good comparo, thanks!

[SleeperAvant]

Nice!

[Wet0willy01]

So I picked up my piece from the machine shop today. Without further ado...






Trimmed the foam insulator sleeve...


Inserted into the factory cradle







Next is to make some bulkheads to pass the electrical feed into the tank through the tank lid. Then it will be feed by 10awg wire directly from the battery and a relay.

Beer makes me Schmart

[Shayneduboulay]

Wow that looks really good

[Wet0willy01]

Thanks Shayne. I'm pleased in how my idea turned out in the end. You still interested in one?

[DaSkorpion]

I'm definitely interested in one of these bad boys - Willy, think your machinist is willing to do a group buy for the adapter I'm down LMK?

[drjonez]

I'm definitely interested in one of these bad boys - Willy, think your machinist is willing to do a group buy for the adapter I'm down LMK?

x2!

[SleeperAvant]

I'd be interested too.

[Wet0willy01]

I'll talk to him today about details. PM me for info I'd like to keep this thread clean.

[Dan[FN]6262]

Like a boss

[Bische]

Looks awesome! what is the diameter of the 340?

Im thinking of maybe going with the Walbro 400lph intank in the future, i would need to fab something up just like you did.

[Wet0willy01]

Nice, I'll check out that pump for curiousity sake.

I am in the process of installing the Aeromotive 340 Stealth in tank fuel pump into my quattro b6 fuel tank. I planned on running the 034 drop in pump until my premature turbo failure prompted me to purchase a new turbo that would require a higher flowing pump. I will be updating my progress here so others can possibly do the same for themselves as a cheaper solution to the alternative drop in set ups OR if they need more fuel than the current drop in pumps allow.

Some back ground info on the 340 Stealth pump...

LINK TO AEROMOTIVE PDF
http://aeromotiveinc.com/wp-content/...1140_41_42.pdf

The Aeromotive is 39mm dia by 120mm in length as compared to the 040 which is 60mm by 169mm or the 044 at 60mm by 196mm

[Wet0willy01]

Going to poke around at the local hardware store too see what I can come up with for passing wires through the tank lid. Probably will have to order "fuel rated" washers or o-rings to make a bulkhead.

[Wet0willy01]

Talked to some connections of mine and have a lead on these and will have a box of them by Friday likely.

PTFE Washers

I will use these to seal the bolts I pass through the tank lid. I unfortunately cracked it tonight when I center punched my holes. Oh well I'll order one after this.

Here is the plan so far (minus the neoprene washers and substitute for PTFE). I also plan to use Permatex NO. 1 on the bolt thread for an extra sealing countermeasure as it resists gasoline. I drilled 11/64" holes and used #10 stainless bolts. In doing so the bolt is snug in the hole, basically cutting its own thread. I placed the Sta-Kon fitting on the bolt first followed by a #10 stainless washer and then will be a PTFE washer (neoprene in the photos)



before crimping- checking fitment



Outside the tank will then be a PTFE washer, stainless nut, Sta-Kon (10awg/#10 ring), and lock nut as shown



On tank mock up.

I also cut off the old in take fuel pump feed wires and will likely desolderer what remains


Outside of the tank I will un-pin the OEM pump feeder wires from the plug. I will only use them only to energize the coil of a relay in order to provide the feed to new pump with 10awg wire from the battery.




Stay tuned....

[Wet0willy01]

Looks awesome! what is the diameter of the 340?

Im thinking of maybe going with the Walbro 400lph intank in the future, i would need to fab something up just like you did.

wow 39mm and 400LPH wish I would have saw this before.... I have to look at some more dimensions but this may be a better solution for those pushing the limits of static fuel pressure solutions and easier to adapt.


Nice find man!

[Wet0willy01]

Anyone know where I can find just the tank cap? Or does anyone have on sitting around? I need to replace mine and the part number 8E0 906 087 P keeps turning up the full pump assembly. I just realized there may be part numbers on the underside of the cap I will have to check that tonight.

But if anyone has one or a location I can get one I'd greatly appreciate it.

This is what I need

[dougyfresh]

Not sure if you can buy that cover by itself. The p/n you listed is for the fuel pump assembly.

I can not remember if I kept the one from that spare car of mine. Might want to shoot Sam a PM and see if he still has that parts car. This is an item you need to find from a junked car.

[Wet0willy01]

Thanks Doug let me know if you happen to have one.

[BARRY]

i consider this the thread of the year. subscribed!!!

[heywier427]

nice find.

by the looks of your custom sleeve, is it possible to just cut apart the org. pump and slide it over the 340.

pretty much exacly like the one you had made.

what is the diameter of the stock pump?

maybe one could use the sleeve in the kit to take up the space between the 340 and the cut up stock pump ( if the housing of the stock can is too thin).

food for thought.

read too fast. dia. is 39mm ( was said about 5 times!)

[Wet0willy01]

I thought about that. It's likely not going to work. Unsure what the ID of the OEM fuel pump body is until its cut apart. Likely too small, as its rather thin walled aluminum.

And that sleeve provided by Aeromotive is thick enough hold the pump in place by itself rather snug. I just wanted to make sure once it was wet in the fuel it wouldn't slide or jar/vibrate down in the cradle.

(With only Aeromotive provided sleeve)

[Wet0willy01]

I got a bag of the PTFE washers. They look like they will work well. I'm going to use Permatex No. 3 sealant instead (aero rated) because it's not hard setting like the No. 2 I picked up before. I may use the No. 2 to seal the threads on the cap screws.

My new fuel tank lid is being delivered today, but before I modify it I want to test my bulkhead combination. I'm going to drill holes in the bottom of a coffee can or soup can and pass the screws through it like I plan on my tank. Then I'm going to place gas in it and make sure it seals and doesn't break down (in the short term of my test). Not that I think it will due to sourcing the appropriote materials.

[SleeperAvant]

Update?

[Wet0willy01]

PTFE washers and permatex worked like a charm. I need to install the relay and run the 10awg wire from the battery back to tank lid.

I have to pull the pump from the cradle (BIG PITA) to remove the adapter to take to a new machine shop. The one who did my original one doesn't want to make any more, as he did mine as a personal favor.

[tyroneshoelaces]

PTFE washers and permatex worked like a charm. I need to install the relay and run the 10awg wire from the battery back to tank lid.

I have to pull the pump from the cradle (BIG PITA) to remove the adapter to take to a new machine shop. The one who did my original one doesn't want to make any more, as he did mine as a personal favor.

Let me know if you need stuff machined. I could run off 10 of them if you want just as easy as one.

[MmmBoost]

I could probably even do the CAD drawings if you need it.

[tyroneshoelaces]

I could probably even do the CAD drawings if you need it.

I've got a seat of solidworkds too :)

[Wet0willy01]

I'm going to EDITED OUT MACHINE SHOP NAME tomorrow afternoon to get a quote on reproducing my adapter. Those who are interested and have not done so already please PM me contact info.


NAME REMOVED FOR THEIR HIGH LEVEL OF UNPROFESSIONALISM THAT COST ME 2 HOURS OF OVERTIME AND MY ENTIRE AFTERNOON WASTED!!!!

[BARRY]

what about making an adapter for that new walbro? either case i'm in.

[SleeperAvant]

Sent contact info. Thanks Andrew.

[Hansi]

What would I need to source myself if I bought the adapter from you?

[Wet0willy01]

I'm going to try to put "turn key" set ups together if I can including hardware, pump, relay, wiring, etc. Or just the adapter and you provide the pump and accessories.

[Wet0willy01]

I'll update after work the details

[Hansi]

Interesting, awaiting details

[SleeperAvant]

I'm going to try to put "turn key" set ups together if I can including hardware, pump, relay, wiring, etc. Or just the adapter and you provide the pump and accessories.

I just need the adapter, wiring, and relay.