Bosch 044 pump, whos used them or knows anything about them?

You have been around here long enough to know what everyone think's about Bosch ANYTHING and our cars.

Gregg-O said:

You have been around here long enough to know what everyone think's about Bosch ANYTHING and our cars.

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All I've ever seen complaints on was the 02 sensors....

What other failures do they have?

I don't know, I won't try anything by that name.

You can buy just about any fitting you want for them.

http://www.jayracing.com/index.php?main_page=index&cPath=2_12

among others.

A friends shop that does big HP Fords swears buy them.
My first hand dealings with a single 044 tank mounted was starting to have trouble keeping up at 450 RW . It may have been a install issue, but we did flow and pressure drop tests, or the pump.

Never tried the "044" pump, but I did try the Walbro 255 and the Denso "1020" Toyota Supra pump.

The Denso flows ALOT better at high pressure... with a Walbro pump fuel presure wouldn't raise with the boost. I guess it was incapable of keeping with the flow & pressure demands even with 18 volts at the pump.

When I swapped out the Walbro for a Denso the fuel pressure would go up with the boost as it should, with 13 volts. Raising the voltage to the pump had no effect on the fuel pressure @ max boost. It had enough flow to keep up with everything at the minimum voltage setting on my Kenne Bell BAP but I ran it at +25% voltage just to be safe.

This was in my 4200 lbs Caprice running 119-121 mph on the 1/4. Boost level was 8-9 psi and max fuel pressure was around 55 psi.

Here is an interresting link for more info on fuel pumps: http://www.mkiv.com/techarticles/fuel_pumps_test_2/index.html

95wagon said:

A friends shop that does big HP Fords swears buy them.

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Did he ever compare the 044 pump with the Denso 1020 ??<

I would be curious to wee witch flows better cwm7

I was told about the Denso pump aswell. Looking at options.

Where did you pick the denso pump up? I saw them on ebay.

Can it be ran external? Id rather do an external pump.

i dont think you can run it outside the tank, the bottom on the pump is plastic and made to have a strainer on it.

another fun thing about the Denso is that it is VERY silent

You might want to read this: http://forums.corvetteforum.com/c5-...tank-fuel-pump-denso-kyosan-390lph-40psi.html

GuillaumeC said:

i dont think you can run it outside the tank, the bottom on the pump is plastic and made to have a strainer on it.

another fun thing about the Denso is that it is VERY silent

You might want to read this: http://forums.corvetteforum.com/c5-...tank-fuel-pump-denso-kyosan-390lph-40psi.html

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THat special denso pump is $800 (2003) cwm3

I was also trying to find threads on how people run braided line directly to the denso, can you do that aswell?

Im tired of fuel leaks, and I need a bigger feed line anyway for this endevour im pursing


I was going to do a bulkhead 10a fitting on the tank for a feed line.

I paid around 200$ for my 1020 Denso...

I dont remember where though, I'll check for you tomorow.

EDIT: check this out: http://cgi.ebay.com/ebaymotors/Univ...7495341?pt=Motors_Car_Truck_Parts_Accessories

GuillaumeC said:

I paid around 200$ for my 1020 Denso...

I dont remember where though, I'll check for you tomorow.

EDIT: check this out: http://cgi.ebay.com/ebaymotors/Univ...7495341?pt=Motors_Car_Truck_Parts_Accessories

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FN awesome..............

okay with that I swear I paid about $80-90 for a new stock Lt1 pump for my tpi swap

Tad bit more I could have had that...........cwm3


Okay lines and fittings?

My stock sending unit looks like ISH, its rotted out to hell.

Can I do an AN line setup with it?

killerzracing71 said:

Okay lines and fittings?

My stock sending unit looks like ISH, its rotted out to hell.

Can I do an AN line setup with it?

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You can do pretty much anything if you're willing to fabricate it

Look at the pics on the Ebay link, thats what it looks like. You could make your own bulkhead type fitting and make it work. Something like a barbed fitting inside the tank and an AN fitting ouside. Just drill the top, weld the fittings and it'll work (if you can weld!)

GuillaumeC said:

You can do pretty much anything if you're willing to fabricate it

Look at the pics on the Ebay link, thats what it looks like. You could make your own bulkhead type fitting and make it work. Something like a barbed fitting inside the tank and an AN fitting ouside. Just drill the top, weld the fittings and it'll work (if you can weld!)

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I cant but I have freinds that can lol.

Is that Flywheel HP or RWHP?

Any idea on the amount of line I was gonna snag 20ft of 10an for feed, use exsisting stock feed as return.

killerzracing71 said:

THat special denso pump is $800 (2003) cwm3

I was also trying to find threads on how people run braided line directly to the denso, can you do that aswell?

Im tired of fuel leaks, and I need a bigger feed line anyway for this endevour im pursing


I was going to do a bulkhead 10a fitting on the tank for a feed line.

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why do you need 10AN a 6AN is = to 3/8" and a 8AN is = 1/2"

Mean SS said:

why do you need 10AN a 6AN is = to 3/8" and a 8AN is = 1/2"

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Because I was going bigger than stock.

Not needed for stage 1 of my newest build, but stage 2 it will be.

GuillaumeC what did you do to make the Denso pump fit into your Caprice?

808SS said:

GuillaumeC what did you do to make the Denso pump fit into your Caprice?

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I cut the stock sending unit open on all its lenght so I could slide the bigger pump in. Then I installed 2 stainless steel hose clamps on it to keep it in place.

It's cheap, and it works. cwm4