Electric fuel pump vs. stock mechanical pump?

[jerrylg2]

Hello everyone...

I have an 850, but feel this question is applicable to all other models:

1. What's the general consensus about electric vs. mechanical fuel pumps (my previous owner installed a Holley - I hate the #*$% noise and hassle when I work on other electrical things - plus, it looks grossly out of place on an otherwise stock motor!)?

The mechanical type seems readily available in NOS condition. Do they hold up well? The thing that worries me is that the original, mechanical pump is near the very hot manifold - yikes!

I live down the road from Holley (and Corvette!), but just don't like the noise/look of the Holley...

Opinions welcome!

2. A related question (perhaps for the 850 folks only?): What should be the fuel pressure (PSI) out to the stock Weber carb?

Thanks, Jerry

[bradartigue]

Mechanical pumps last longer, are quieter.
Electric pumps get fuel to the carburetor before you turn the key.

However, a carburetor that is properly sorted will not drain fuel out of the bowl when parked, and therefore the mechanical pump will not have to prime the carb in the first place.

There are far, far hotter engine bays and fuel line routings than the 850 out there. Make sure you use good quality fuel line and don't snug the lines all the way up the brass nipple (use about 3mm of space between hose and base). Use good clamps - the kind that don't cut the hose.

Fuel pressure to any Weber is 3-4 psi.