Ciao All, While back I was worried about the Facet pumps being too strong... Well, I found the Best fuel pumps available, they do not need a fuel regulator as they are self adjusting to the demands of carburators... They are widely used in classic cars and are very well suited for carburated cars and are extremly high quality engineering made in Germany: Hardi fuel pump mod # 18812 sells for $75 per unit a bargain condidering its engineering... http://www.hardi.de/verge.htm Easy to mount. For 3500GT Vig. Spy. need to build a mounting braket as they will not fit in the original emplacement of the MonoFlux pumps... Hope this might help someone Cheers Carlo Image Unavailable, Please Login
Self adjusting to the demands of the carburator ... sure. How exactly does that work? Webers are dangerous enough if a float or needle valve fails. Why would I want to run any fuel pump on them without a regulator mounted close to the carbs so that I'm certain it doesn't ever overwhelm the carbs? They use the Facet style fuel pumps in small airplanes. Pilots are usually pretty concerned about that sort of thing. Bob S.
No idea how it works, but that's what the German engineer has been working on to get it to do that... Read the website, better contact them via email, their respond quick. Original Monoflux pumps did not have any regulators, Facets you have no choice you have to as they send way too much pressur to the Webers... Carlo
Carlo, It appears the Hardi pumps put out a constant pressure and have a variable flow rate. They must have some internal method to regulate the pressure and therefore you do not need an external regulator. Please note that 18812 is rated at .38 bar (5.5 psi) which is on the high side for our cars. I think 13312, which is rated at .15 bar (2.2 psi), would be a better choice. Another consideration is the maximum fuel volume. The Facet red top pump can put out 40 gallons/hr while the Hardi 13312 puts out 25 gallons/hr. Where did you buy your pump? Ivan
Any manufacturer can integrate a pressure regulator with their pump but if your pump is at the rear of the car like on several of mine it's just a better idea to have the regulator closer to the carbs. That flow volume wouldn't be enough for a big V12 or V8. From their specs: Application For cars with carburettor as fuel pump from the tank to the carburettor - up to 60 HP: 13312 - up to 100 HP: 14412 - up to 100 HP: 18812 Bob S.
At Olaf's, but you can get them on eBay.de or buy them straight from them but shipping is expensive...
Carlo, thanks for posting the information on the fuel pumps. Here is the Holley pump that I installed on my 3500 GT. Any recommendations on a fuel pressure regulator and where to install it? Image Unavailable, Please Login
No idea, since my goal is to keep originality to a high level and add the least possible... Some say buy any regultator from your part store, no idea on what might be a good one... Some say place it close to the carbs others say place it by the pumps so not to spoil the view in the engine bay...
I have the same goals for my car. My plan is to use a Facet pump with a Filter King filter/regulator, and hide them in the right rear fender. That keeps the engine compartment looking original. Filter King are available on eBay for about $50. There is a 67mm and a 85mm version. The V8 cars used the smaller version and that is what I am planning on using as it would be easier to fit. Please remember that as long as there is sufficient fuel volume at around 2.5 psi the Webers really do not care what pump is doing the work. Ivan
The one Ivan is refering to certainly is the most authetically Italian but I have no idea about originality on your car. So if you need to hide it get something small. That one has a glass fuel bowl which is handy and a filter but not a terribly good one. The Facet style pump has a built in filter but you should still add a high quality filter somewhere in the system. If you're hiding this from view then Malllory make a very nice series of high quality aluminum fuel pressure regulators. I've used them on two of my cars with Webers. They work fine. But I thought you were getting the other pump which has it's own regulator? Bob S.
Carlo, Ivan, and Bob, thanks for the advice on the fuel pressure regulator. I will hide it back with the fuel pump and filter in the right rear fender.
