Any Tips On Quieting a Facett Fuel Pump ?

[Jim Fierst]

The 79 LBZ has a Facett electric fuel pump which has isolater rubber mounts but still is very noisy. The mounts are about the same as the ones used on the exhaust. ( 1" in dia., 3/4" long with 6 X 1mm studs on each end) It is mounted in what I assume is the standard location and bolts through the floor pan under the right rear passanger seat.Any one have any experience in quieting them with different mounting?? I don't want to buy a new pump.

[DJ]

I know of no way to quiet a Facet other than to replace it with a Bosch or a Carter. I hate most anything made by Facet.

[pabeaver]

Yes, get a Carter or any other rotary pump. The Carter universal 4 psi is around $35 on ebay.

[Charley]

I have a Holley "Red" fuel pump on my Coupe. The thing is probably even noisier than a Facett. I don't mind thought,because when I hear that noise,I know for sure I am getting a good supply of fuel,sort of like having an audible fuel pressure gauge.;)

[SubGothius]

bolts through the floor pan under the right rear passanger seat.

Through the floor pan directly? On my '79 LBZ, the pump actually bolts to a sort of vented sheetmetal pan type thing that serves as a carrier/shield/housing for the pump, and the housing itself bolts to the side of the rear antiroll bar pivot bracket under the car, just in front of the right rear wheel. Maybe you're missing that carrier, and at some point a PO had bolted the pump directly to your floorpan which is now transmitting vibrations or even resonating?

If I misread your description, and you do actually still have the housing pan, you could prolly lay some fiberglass insulation as batting over the pump inside that housing to muffle the sound, and/or add some rubber washers or o-rings to the bolts where the carrier pan bolts up to the chassis?

[Jim Keller]

Yea, like Tye said, sounds like yours isn't mounted in the factory location, getting it off the floor pan and onto the suspension componant as factory will most likely do the trick. Thefuel pmup on the one and only 79 I had was also mounted as Tye described

[Jim Fierst]

I just checked and mine is bolted directly to the floor .. No other sheetmetal or brackets around so it is design and fabricate time.

[len_newstrum]

Jim,

Rather than go the "design and fabricate" route, why not just get the fuel pump cage from a wrecking yard or from one of us that has a parts car? (I'm in the Seattle WA area and have a '78 parts car. If by some chance you are nearby you could have the part for the taking!)

[Jim Keller]

Because Len, there is no satifaction like the one you get from fabricating a proper fitting and working part yourself! that's why we own Betas! fabricate, fabricate, fabricate! LOL

That's why I enjoyed building that Factory Five Daytona Cobra "Coupe" with my buddy as well, they call it a kit car, but every piece has to be modified and or fabricated, there is no assembly out of box with one of those contrary to what their adds tell you! ha ha ha, and their assembly manual? HA! not even good enough to wipe your butt with! we truly got more information to build the car properly from a very accurate 1/18 scale model car than the manual provided!, what a waste of paper that was!

[len_newstrum]

How true! However, some of us lack the skills and/or equipment to do a good fabrication job. Granted, the pump cage isn't visible, but a piece of sheet metal with hammer marks all over it would irritate me, even if I was the only person to know that it was there.:red face: I must say that many of the photos of home-made parts that are posted here qualify as works-of-art. (If there was a smiley for envy, I would have put it here.)

[Jim Fierst]

Len, I don't have a junk yard or a parts car that I know of within 200 miles of me so I don't even consider that an option. On top of that if the pump is significantly different from the Facet that is another issue. I will get around to fabricating one.

[Jim Fierst]

Bringing closure to this thread... I installed a rotary pump and the silence is deafining..

[len_newstrum]

You made the right choice.:cheers:

Just so that other people will appreciate the importance of using a rotary pump rather that the Facet-type pumps when running Webers; I ran across this on a Weber supplier site yesterday while trying to find a source for low-speed circuit jets.


Facet Fuel Pump:
This is one of those little square pumps with the transistor mounted on top that makes a ticking noise all the time. These pumps are TERRIBLE. No volume and High Pressure. These pumps have been sold for many years with Weber and Mikuni conversions and have cause many people a lot of tuning problems. They are a pulse type pump that delivers almost no volume (usually less than the stock mechanical pump did) and usually at High Pressure. This causes flooding at idle and lean out conditions under high load. Do not use them....
Sit back and listen to your stereo now.