Holley carb filters...
 

Do you have to run those bronze style filters in a typical dual-feed Holley? Do they restrict fuel flow and would a high flow in line filter perform better?? Any thoughts from you carb experts??

wilma

Re: Holley carb filters...
 

From the Chevrolet Power Catalog, CP=6MA13108801, section 6, Mark IV Big Block, page 6-34, Fuel System:

"When installing a Holley four-barrel carburetor, the production sintered bronze fuel filters located inside the fuel inlet nuts should be removed and discarded. Install a single large paper element replaceable filter (part number 854619) between the fuel pump and carburetor. The fuel pressure drop through the sintered bronze filters cannot be detected because they are located after any fuel pressure gauge connection. Clogged fuel filters are frequently responsible for engine failures and poor performance."

In the illustration is pictured an AC inline filter with part number GF-61-P.

Re: Holley carb filters...
 

There is also a nylon mesh filter made by AC Delco that will fit where the original bronze filter went. It will only keep out the big chunks. It was used in some marine application. I'll check tonight and see if I have any left and get you the part #.

Re: Holley carb filters...
 

I still use the stock inlet filters...never had a problem, and our car seems to run ok...https://www.yenko.net/ubbthreads/imag...lins/dunno.gif

Re: Holley carb filters...
 

Rob--------Can you run your car with an inline filter in the class you compete?---I would be curious to see if you got a lttle boost on top end with a larger filter free flowing filter--------------We use to chuck them and install inline filters------I'm just posting this because it would be a good test----------------Joe

Re: Holley carb filters...
 

Nope...lines gotta be as they came from the factory...

Re: Holley carb filters...
 

If you are running good clean gas the sintered bronze fuel filters will do fine, IMHO as long as you change them frequently. They do clog quicker than the paper elements. Of course, for all out racing (which is what the Chevrolet Power Catalog was addressing) there is no question a large in line filter gives more protection.

Just my 2 cents.

Lynn

Re: Holley carb filters...
 

[ QUOTE ]
There is also a nylon mesh filter made by AC Delco that will fit where the original bronze filter went. It will only keep out the big chunks. It was used in some marine application. I'll check tonight and see if I have any left and get you the part #.

[/ QUOTE ]

Well........ some time during the last 25 years and five moves I managed to misplace (crs?) those filters. I'll keep looking and when I find them I'll post pictures and part #'s.

Re: Holley carb filters...
 

They do make paper pleated filters to replace the bronze units

Re: Holley carb filters...
 

I've ran the paper filters before, and the ones I had didn't seem to fit *just* right...so I eventually went back to the rock-type filter...but, I may look into the mesh units John is speaking of...