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Getting really close to firing up the car. Went to flush the fuel lines last night and both 044s are leaking around the crimp that holds the body to the end. Thinking of twin AEM 380s and lookin for opinions. It'll be on E85. Intank isn't really an option. Thanks guys.
That's because 044's are NOT rated for E85. 380's are suppose to be the next big thing. I'd give them a shot.
Right off the AEM Product Information page:
"The AEM 380lph High Flow Fuel Pump is designed for use with gasoline. Alcohol fuels can be used, but pump life will be diminished. The inlet thread is a -10 AN female ORB (O-ring port fitting) and the discharge is a female -6 AN ORB (O-ring port fitting)."
Lots and lots of guys using the old 044's with E85 as well... I haven't heard of the 044's leaking form the crimps before.
Any pump with copper commutator windings exposed to ethanol isn't truly compatible. Which is basically every pump out there aside from the ones with mechanical style pump heads like this one...
I did a little research and came across some info that others found leaks at the same spot if the pump was used and left to sit dry for an extended amount of time. Mine were bought used and sat for quite a while dry. Apparently the oring that seals the body at the crimp shrinks causing leakage.
I did a little research and came across some info that others found leaks at the same spot if the pump was used and left to sit dry for an extended amount of time. Mine were bought used and sat for quite a while dry. Apparently the oring that seals the body at the crimp shrinks causing leakage.
I dont believe that for a second..and have used various Bosch pumps for over 20 years, as do many OEM's
Ok, you don't had to believe it. Just some info I came across and thought I'd share. The pumps I have do look authentic when comparing the "fake vs genuine" details that are posted in several places. Also, aside from buying straight from Bosch, I'm not sure who I'd trust to sell me a genuine pump. We'll see how the AEMs work out.
Problem is...the fakes do look so bloody good, and they always improve making it harder to spot them.
I'm just glad mine are from an age before all that bullshit started ! and I have another sitting if I ever did need another.
The new copies do sound tempting as they promise more flow...again, it would be nice to see some independent proof of this and reliability before I'd ever consider changing.
Problem is...the fakes do look so bloody good, and they always improve making it harder to spot them.
I'm just glad mine are from an age before all that bullshit started ! and I have another sitting if I ever did need another.
The new copies do sound tempting as they promise more flow...again, it would be nice to see some independent proof of this and reliability before I'd ever consider changing.
I totally understand your point. I'll try and remember to do a flow test when I get the pumps and I'll post up my results. As far as reliability and how long they last, that'll take some time.
cant speak for the knock offs but I can tell you that the aem 380 out flows a real 044 in real world testing. my car is on e85 and my genuine bosch 044 was all done at about 12 psi boost but my 380 keeps the afr's solid as far as 15# and has shown no signs of stopping there.
my friends 5.3 turbo on e85 holds 10.8 afr solid at 17# boost . far beyond where I whould have thought it whould run out. 58 base with the boost line hooked up to stock return reg. aem 380.
"The AEM 380lph High Flow Fuel Pump is designed for use with gasoline. Alcohol fuels can be used, but pump life will be diminished. The inlet thread is a -10 AN female ORB (O-ring port fitting) and the discharge is a female -6 AN ORB (O-ring port fitting)."
Lots and lots of guys using the old 044's with E85 as well... I haven't heard of the 044's leaking form the crimps before.
Any pump with copper commutator windings exposed to ethanol isn't truly compatible. Which is basically every pump out there aside from the ones with mechanical style pump heads like this one...
I could careless what other people "have success with" I've personally destroyed 3 known Bosch 044 pumps in less than a year using E85
I hear ya, but for every 1 horror story (3 in your case) there's 10 more that don't have an issue. I've installed them on E85 cars that have been running for many years no with no issue. Check over on the DSM forums, they are VERY common on E85 setups there. I ran one for 3 years or so on my talon without issue. Known many others that have done the same.
I hear ya, but for every 1 horror story (3 in your case) there's 10 more that don't have an issue. I've installed them on E85 cars that have been running for many years no with no issue. Check over on the DSM forums, they are VERY common on E85 setups there. I ran one for 3 years or so on my talon without issue. Known many others that have done the same.
Yeah that's why I originally bought one. Then shortly after mine and friends pumps started failing. Never again.
06-02-2016, 06:14 AM
Bosch pumps leaking...AEM 380s? 
