This is good to know thanks!!
Inline electric fuel pump, what’s the best option?
- Thread starter vanbavaria
- Start date
This is good to know thanks!!
Well that’s good to know, thanks.
I don't recall where I found the part number, but REALOEM shows the part in this picture, with a label as part number 7 (and the gasket as part number 8), but no corresponding part number. You may have to search other BMWs with the M30 engine.
RealOEM.com - Online BMW Parts Catalog
BMW parts 2.5CS-3.0CSL 3.0CS Cylinder head cover/Mounting parts
www.realoem.com
I got mine from Carl Nelson
Who’s Carl Nelson? A member?
Use Jim at Mesa once again.
Oop never mind La Jolla
Further to my post above, and in case anyone else is looking into this, I found the part numbers. These do not show as associated with my car because it came with a fuel pump in that location. The CSis, however, had the block off plate:
07 Cover lid 11 12 1 254 991
08 Gasket Asbestos Free 11 12 1 255 305
07 Cover lid 11 12 1 254 991
08 Gasket Asbestos Free 11 12 1 255 305
Hey up Ohmess,
me again, as you can see from the pictures I’m trying to determine where to mount this pump. The pierburg instructions call it to be lower then the tank but that might be a challenge. I’m just trying to picture where abouts you installed yours like you suggested? As pictured below I thought that this would be a prime position but I realized it’s still not that low compared to the fuel tank. Will it really effect performance....the second picture shows a position beside the tank in the trunk. This would be easier to install but not sure if it’s a wise choice. Thoughts?
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I mounted mine to one of the differential bolts. You don't want it in the trunk because it will resonate loudly.
In my NK I placed it in front of the tank and had to rotate the fuel sender 180 degrees and used a longer fuel hose. No vibration with the Pierburg using their supplied clamp.
So first to overall location, I went low outside the car because I was worried about noise and wanted to go as low as possible to prevent vapor lock. That said, the Pierburg is very quiet, as Chris notes.
I also had a damaged piece of fuel line I removed at my mounting location.
That location in the first picture looks like a good one, but I wanted a mounting method that did not involve punching holes in my car. Not making new holes in my coupe is one of my idiosyncracies.
If you continue to follow that fuel line toward the engine, it will turn out toward the sill and then straighten out for the long run under the front seat mount. I cut into my line where it makes the turn toward the front of the car.
If you look at the subframe mount, my location is easy to see. There is a triangular cavity forward from the subframe bushing that is formed by the bushing housing, the tension strut and the floor of the car. My pump sits in that cavity, protected from below by the tension strut.
I also had a damaged piece of fuel line I removed at my mounting location.
That location in the first picture looks like a good one, but I wanted a mounting method that did not involve punching holes in my car. Not making new holes in my coupe is one of my idiosyncracies.
If you continue to follow that fuel line toward the engine, it will turn out toward the sill and then straighten out for the long run under the front seat mount. I cut into my line where it makes the turn toward the front of the car.
If you look at the subframe mount, my location is easy to see. There is a triangular cavity forward from the subframe bushing that is formed by the bushing housing, the tension strut and the floor of the car. My pump sits in that cavity, protected from below by the tension strut.
So decided to go in the trunk root. I couldn’t find the cavity ohmess was explaining. I then realized that perhaps the Bavaria model doesn’t have such a cavity in the underbody. Aside from a slight pump motor noise I find I can barely hear it over the engine running. Hoping this will take care of the vapor locking issue I was having with the mechanical fuel pump. Thanks for the help every one.
