Bosch 044 In Tank? anyone ever done this? i'm doing it tonight i'll let you guys know how it goes. 98 F Body. maxed out my single walbro |
Very interested in how this works out. I'm in the same situation and don't want an external pump. |
Another option is to put the 044 externally in series with the in-tank pump. Output will be greater than a 044 alone. |
Originally Posted by 70GS455
(Post 13571756)
Another option is to put the 044 externally in series with the in-tank pump. Output will be greater than a 044 alone. 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. |
In to see the pics of this ........... |
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. |
Originally Posted by boostFedcivic
(Post 13575902)
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. Check it out on any flow test that provides a chart of flow-vs-pressure for the pumps individually and additively. |
Bump for pix. |
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All I see is a red X |
fixed |
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. |
the fuel sock also helps with pickup from the bottom of the tank. |
What is the flow comparison between the single Bosch044 and twin Walbro255's? |
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. |
Do you think the 044 with a BAP will support 700rwhp on E85 with -8 feeds and -6 return? |
Originally Posted by No Juice
(Post 13594942)
Do you think the 044 with a BAP will support 700rwhp on E85 with -8 feeds and -6 return? 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. |
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. |
Originally Posted by No Juice
(Post 13594058)
What is the flow comparison between the single Bosch044 and twin Walbro255's? Production twin W340's are 87 gph vs 67 |
Originally Posted by No Juice
(Post 13594942)
Do you think the 044 with a BAP will support 700rwhp on E85 with -8 feeds and -6 return? |
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