AEM E85 Fuel Pump - Tube keeps falling off...

Jhill · 06-26-2021, 11:51 PM

Quote:

Originally Posted by DrBacon

Curious if you've actually heard a walbro and it's too loud or just going off of what others say? I have a 525 and there was a barely audible hum with all of the interior pieces off and the top hat exposed, with all the interior back in I literally can't hear the pump at all. All my fuel "noise" comes from the fuel pressure regulator in the engine bay.

Yes as I said I came from the walbro 255 and it was stupid loud (in my opinion). The walbro 255 is notoriously loud and is actually louder than their higher volume pumps. Google search it and you’ll find videos of it louder than an American muscle v8 exhaust and then switched to the DW and being whisper quiet. The walbro 255 is a vane pump most others (I believe including walbro higher volume) are turbine pumps.

DrBacon · 06-27-2021, 01:09 AM

Quote:

Originally Posted by Jhill

Yes as I said I came from the walbro 255 and it was stupid loud (in my opinion). The walbro 255 is notoriously loud and is actually louder than their higher volume pumps. Google search it and you’ll find videos of it louder than an American muscle v8 exhaust and then switched to the DW and being whisper quiet. The walbro 255 is a vane pump most others (I believe including walbro higher volume) are turbine pumps.

I overlooked the part of you having the walbro 255, my bad. I was just pleasantly surprised with the 525 as I had expected it to be fairly loud.

SeeThruHead · 06-27-2021, 11:39 AM

Quote:

Originally Posted by DrBacon

I overlooked the part of you having the walbro 255, my bad. I was just pleasantly surprised with the 525 as I had expected it to be fairly loud.

Blog Post Radium's Ultimate Fuel Pump Test

Quote:

The Walbro "255" uses a gerotor which is inherently noisy.

Spooler · 06-28-2021, 10:55 AM

Quote:

Originally Posted by DrBacon

I overlooked the part of you having the walbro 255, my bad. I was just pleasantly surprised with the 525 as I had expected it to be fairly loud.

My twin 450's are not even noticeable. You can barely here my one pump running at startup.

Jhill · 06-28-2021, 04:35 PM

Quote:

Originally Posted by Spooler

My twin 450's are not even noticeable. You can barely here my one pump running at startup.

Right. I believe the 255 is the only one that uses the vane system.

Spooler · 06-28-2021, 05:14 PM

Quote:

Originally Posted by Jhill

Right. I believe the 255 is the only one that uses the vane system.

If that is like an old Bosch 044 then that thing was noisy as hell.

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