Dual Walbros?

[jz*supra]

my fuel system showed up a few days ago and i am with twincam187. I am not 100% sure i got everything right.
I have dual walbros and a mtr dual hangar.
1. Do i need to install the isolators on the bottom of the pump? the pump fits snug to the metal hangar so what is the reason for the isolator on the bottom?
2. In the box with my fuel system i found to rubber gaskets, both with a red grease in the center, they look like they would fit around the pumps, i have not opened them. Do they go around the pump? they were not in the install kit, they were loose in the box, i am not even sure if they go with the fuel system.
3. I dont no what to use as an insulator to prevent magnetic disturbance.
4. Originaly i was told that the stock wiring would run the pumps, however my source was not as credible as the people on this site. I would like more info about rewiring them. I no i should run a new power wire direct from the battery and use the stock pump power wire as a trigger. But my main concern is how do i use the stock wire as a trigger? Is there a switch i can buy? I have wired tons of stereo's and understand remote turn on's, but how do i make one?

 

[QWIKSTRIKE]

Isolators sheild elotromagnetic interference that cancels the functions of the pump. Put one isolator on a pump.

 

[jz*supra]

Ok. I still dont see how the isolators help because the sides of the pump are metal and so is the hangar, but i will do it.

 

[IJ.]

And Metal would be <taaaa dddddddaaaaaaaaaaaaaa> "MAGNETIC"......

 

[Supraboostin]

for the people running -8 hose from the pumps to the rail,what fuel filter are your running?

 

[King of Cleveland]

huh. that 044 looks suspiciously like the volvo turbo inline pump. it's a noisy bastard too. I think I've got two or three of those hanging around in boxes...

I'm off to search for some specs.

...also, volvos heat up their fuel significantly over time, they will vapor lock in an instant on a hot day if the regulator is the least bit flakey. y'ever see a volvo guy with the hood up in early summer? yup.

 

[King of Cleveland]

Bosch #0 580 464 025 --> runs @ 50GPH (~190lph) @ 100psi (6.8 bar)

interesting, huh? I've got one of these in the garage that came from a late b230ft turbo volvo, I think it was a '91. I guess I won't be shopping for a fuel pump anytime soon. For general consideration (and hours of lying-on-your-back-in-the-mud fun), these should be easy, cheap junkyard pulls from 86-91 volvo turbos (I think... you'll have to check numbers yourself)

outflows the crap out of that walboro.

 

[IJ.]

044's are a monster and as noted NOISY bastards in a Supra I'd leave the dual voltage setup in place just to make it quieter around town

 

[King of Cleveland]

044's are a monster and as noted NOISY bastards in a Supra I'd leave the dual voltage setup in place just to make it quieter around town

dig, I think that would be the ticket. I bet that 044 is quite a bit louder than this 025 and it pulls four more amps. Any standalone could program an aux out to relay around a ballast when you punch it, then you'd actually have redundant circuits powering the pump... also good I suppose.

The volvo uses a staged pumps, there is an in tank pump also... having accidentally seen both pumps do their thing, I can tell you the in-tank only develops about 6 pounds and sort of piddles gas in the driveway, but the high-pressure inline has a firehose-like output. I think the staged-pump idea is a good one, and would probably help out with the dual-voltage scenario, taking some of the load off the high-pressure pump while it's running at a lower voltage....

Also, and this may also be significant for those who want to try the allegedly noisy 044, the inline pump on volvos bitches and moans a lot more when the in-tank pump dies or is disconnected. The car still runs fine and the pump develops pressure, but it makes a lot more noise.

decreased cavitation maybe with a helper pump? dunno.

 

[IJ.]

LOL KoC it's NOT alleged a friend has one and I hear the pump before I hear the car arrive

Our cars do the dual voltage stock so no need to change anything other than adding a relay for the 12v feed right at the back of the car.

 

[King of Cleveland]

oh, I believe you. I just haven't heard it myself..... and sometimes one man's noise is another man's music....

... rock and roll ain't noise pollution, right? for a rock and roll outlaw, anyway...


ooooo. two aussie music refrences in one post. speaking of, some cleveland area bros of mine, the black keys, just returned from a couple weeks there. They loved it. I've been myself, but it's been a few years. Unlike a lot of places I've been, I want to go back.

it's nearly impossible to get a tooheys in cleveland, you know.

and now back to some kind of relevant discussion....

 

[jz*supra]

And Metal would be <taaaa dddddddaaaaaaaaaaaaaa> "MAGNETIC"......

No offense man, i no u no more than i do, but that makes no sense. I confirmed my questions with rudy himself. If you are using the MTR dual pump hanger you:
DO NOT need to put the isolators on the bottom of the pumps
DO NOT need a insulator between the pumps. They are spaced enough not to create a magnetic feild.
Rudy DOES recomoned rewirng them using the stock wire as a trigger.

qwik when you said 2 30 amp relays was that for walbro fuel pumps? If not how many amps do the walbros need?

This info comes direct from rudy at mtr. Hope that clears a few things up.

 

[becauseican]

I was looking into the Bosch 044 pump too, but I was going to leave the mk4 intnk pump, and then run the Bosch inline with -8 an to the rail with stock return. Rather than 2 intank walbros.

 

[IJ.]

No offense man, i no u no more than i do, but that makes no sense. I confirmed my questions with rudy himself. If you are using the MTR dual pump hanger you:
DO NOT need to put the isolators on the bottom of the pumps
DO NOT need a insulator between the pumps. They are spaced enough not to create a magnetic feild.
Rudy DOES recomoned rewirng them using the stock wire as a trigger.

qwik when you said 2 30 amp relays was that for walbro fuel pumps? If not how many amps do the walbros need?

This info comes direct from rudy at mtr. Hope that clears a few things up.

Never seen the Hanger you're talking about most people just use a hose clamp around the stock hanger so both pumps are touching so need an isolator.

 

[hottscennessey]

I was looking into the Bosch 044 pump too, but I was going to leave the mk4 intnk pump, and then run the Bosch inline with -8 an to the rail with stock return. Rather than 2 intank walbros.

I'd like to see how this works out, will you keep us posted? I've read that the walbro doesn't do well with an inline pump, but maybe the MKIV pump will do better..?

Edit: actually, I'd be interested to seeing if there is more flow from just a 044, or an inline setup with the mkiv intake and the inline 044.

 

[QWIKSTRIKE]

I was looking into the Bosch 044 pump too, but I was going to leave the mk4 intnk pump, and then run the Bosch inline with -8 an to the rail with stock return. Rather than 2 intank walbros.

Are they going to share the same line or separate lines. I heard that running 2 pumps inline on the same line would cause pump failures, and issues. How true that is I don't know.

 

[becauseican]

I was going to run the intank mk4 pump to the 044 then to the rail with a sinlge -8an line system, just like your basic booster pump system, people have been doing this for years. The thing is I just need a little more fuel for 550-600 whp where one pump doesnt cut it. Remember the higher the pressure the less the pumps will flow, and by feeding the 044 with another pump it will allow it to flow more because of the less back pressure. I am just worried about how many amps they will pull, I know the mk4 pump pulls like 15+ amps, and I am not sure how much the 044 uses.

 

[hottscennessey]

Check it out.. worlds fastest 1JZ (the cressida) is fed by an intake walbro to a surge tank followed by a bosch 044 w/ -8 lines to the rail. Appearantly its feeding the 1000cc injectors just fine. I just thought you guys would find this interesting.

http://www.1jz747.com.au/Magazines/Shane-Zoom-2Lrg.jpg

 

[strictlySupra]

hollly i went with teh aeromotive inline. because i went with a fuel cell.

 

[jizake1jz]

Nope...my contribution was to show you have NFI of what you're talking about

And...congratulations! You've achieved what many others have before you :biglaugh:



(Figured a pic would make it really easy for a guy like you to understand)

thanks god! i finally found an avatar!