Bosch 044 In Tank?
No sir, Pressure will be greater yes. but volume will be limited by the flow of the pump feeding the 044 from the tank. i have maxed out the single walbro, so adding a 044 in line will only keep the pressure higher.
The 044 is in the tank. it was a tight fit but it is in there. the gauge is on the E and the car still runs. through bumps, turns, dips, and everything in between. Seems like i did good.
I took tons of pictures and i will make a write up in the coming week.
Staging Lane
Joined: Sep 2009
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From: Pittsburgh
You have something wrong, when you match a 255 or something intank feeding a bosch 044, it increases the output of the second pump. It does not have anything to do with raising pressure. Many non-ls1 cars have been using the 255-feeding-044 setup with some success.
Don't get me wrong though, I'm not a fan of feeder setups.
Don't get me wrong though, I'm not a fan of feeder setups.
Last edited by Spoolinsteve; Jul 9, 2010 at 10:02 AM.
Teching In
Joined: Oct 2005
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Check it out on any flow test that provides a chart of flow-vs-pressure for the pumps individually and additively.
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9 Second Club
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From: Norn Iron
The 044 can easily be mounted in-tank. and most of the recent one's Ive seen, already have a gauze inside the intake. So no need for an external sock, although would likely do no harm to use it.
Just look inside to see. In fact, pretty much any pump can be mounted in-tank.
As for 2 pumps in series. Flow will increase.
The 044 will be assisted by the other pump which will now flow a lot more than it normally would, as it is no longer having to create pressure.
So a Walbro will safely feed an 044, and in some respects assist it.
Although I'd never be a fan of using 2 pumps in series, unless it was via an external swirl tank or similar.
Just look inside to see. In fact, pretty much any pump can be mounted in-tank.
As for 2 pumps in series. Flow will increase.
The 044 will be assisted by the other pump which will now flow a lot more than it normally would, as it is no longer having to create pressure.
So a Walbro will safely feed an 044, and in some respects assist it.
Although I'd never be a fan of using 2 pumps in series, unless it was via an external swirl tank or similar.
9 Second Club
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From: Norn Iron
Only actual testing for each complete install will give you that answer.
But a pair of Walbros will flow more...but they will also still start to struggle around 70-75psi where flow drops off quite dramatically.
But a pair of Walbros will flow more...but they will also still start to struggle around 70-75psi where flow drops off quite dramatically.
9 Second Club
Joined: Nov 2003
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From: Norn Iron
But then US ratings for the same pump far exceeed other parts of the world.
Generally its regarded as a 500bhp capable pump or thereabouts here in the UK ( flywheel, not wheel ). Some US sources would regard it as 700rwhp in single form. So you can see part of the problem.
I'd say 700rwhp is very optimistic. But its also part of the reason I rarely believe any power figures quoted.
For 700rwhp on E85, I'd say you need at least 2 pumps, or one very capable pump.
Teching In
Joined: Oct 2005
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Here is a plot from test data of a 340 and 392 in series:
http://www.turbobuick.com/forums/e85...ml#post2544027
It's one of the attached pdf files in that post.
http://www.turbobuick.com/forums/e85...ml#post2544027
It's one of the attached pdf files in that post.
Teching In
Joined: Oct 2005
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Teching In
Joined: Oct 2005
Posts: 27
Likes: 0
Maybe. At 13.5V, you will be at about 68 gph at 75 psi which is enough for just over 600 hp (BSFC =.65 for E85). A few more volts may give you enough, haven't seen any test data at 15 or 16 volts tho....