high volume oil pump for F351C help

hockey44 · #1 (**permalink**) 06-29-2003, 05:51 AM

I am considering Melling 84AHV and have discovered a firm called "Precision Oil Pumps" who sell a blueprinter version of the same. Has anyone had any experience with Precision Oil Pumps? If not, what is generally regarded as the 'best' oil pump to run with Canton 7qt racing pan plus Canton 1qt remote filter.

Many thanks,
Ed

speed220mph · #2 (**permalink**) 06-29-2003, 07:11 AM

I use the 7-qt. pan on my 427 so, but with a conventional remote filter plumbed in series with the chin mounted cooler. Cooler remains taped over except for when I use car for high output, i.e., racing. As for a high-volume oil pump, don't use one unless your engine has extremely high oil clearances. High-volume pumps waste power and put a higher load on your engine's timing set. Stick with a standard pump. All "blueprinted" means is the pump has the correct clearances, so a factory stock pump should do the job.

kountzecobra · #3 (**permalink**) 06-29-2003, 08:05 AM

Tom is correct in that high volume pumps are not needed but I always used them in Clevelands for a little added insurance. It seems like I always end up with bearing clearances on the loose end anyway. I have no experience with Precision, but a while back, on another forum, several were speaking highly of their work. I think they grind the ends of the gears and the pump cover for proper clearance then lap the gears for smoothness? (Years ago, we used to primitively sand the ends of the gears and cover face on a piece of glass covered with emery cloth.

)

hockey44 · #4 (**permalink**) 06-29-2003, 09:56 AM

I should have mentioned that Mocal oil coiler also mounted in chin. I had heard given large pan (7qt Canton and 1 qt Canton filter using Canton billet remote mount) would require more pressure that std. pump hence my question about high volume. So is the conclusion that for Cleveland (4V Boss) the HV pump makes more sense?
thanks from the land of Swiss Cheese and Chocalate!

Bob In Ct · #5 (**permalink**) 06-29-2003, 01:19 PM

Ed:
I would consider Tom's advice.

Bob

cobra427mnsi · #6 (**permalink**) 06-29-2003, 08:35 PM

Edsherman

I have the Precision Pumps high volume oil pump on my Fe406. I am in the process of building a '63 427 center oiler and plan on putting that pump on it. Anyway, I bought the HV pump for the 427 but decided to install it on the 406 while I was building the 427. The oil pressure on the 406 pre HV pump was what I would consider low. When hot the pressure was around 10-15 lbs at idle and 35-40 lbs at 3000 rpm. Now with the HV pump the pressure is around 25 lbs at idle and 80 lbs at 3000 rpm. When the engine is cold, I am careful not to rev it too high because the idle pressure is around 80 lbs and it goes over 100 if revved too high. So I am happy with the new pump.

"Doug" at Precision Pumps seemed like a very nice guy to deal with and he did exactly what he said he would do. eg shipping times, product etc. I was very satisfied with their service. He sells other stuff for the FE as well. Check out their web site.

Paul

cobra427mnsi · #7 (**permalink**) 06-29-2003, 08:39 PM

Edsherman

I forgot to add that if you use the HV pump you must use a larger capacity oil pan so the pump does not pump it dry on hard corners or accelerating. Also, if you plan to run a FE you need to restrict the oil to the top of the engine or your rocker covers will fill with oil.

Paul

aumoore · #8 (**permalink**) 06-29-2003, 10:46 PM

HV pumps are not needed for a engine set up for street driving period. If you are building a NASCAR motor designed for 500 miles of use before it is rebuilt or a drag motor a HV pump will in most cases cause you engine failure. Most street motors are set up with fairly tight tollerances but race motors are built loose so they will turn more rpm and they depend on the oil to fill the extera gap in the bearings.

I have a friend that ruined two 460 fords by using a HV pump. HE did what was described above, filled the valve covers with oil and starved the bearings.

A motor built for a HV pump will not live long on the street. You could probably get a few thousand miles out of a motor built for drag racing or NASCAR racing. Now a motor built for 24 hours of Daytona will be closer to a street motor in bearing tollerance but it will have oil restrictors, bigger drain back holes and a dry sump system with several gallons of oil.

Clois Harlan · #9 (**permalink**) 06-30-2003, 06:32 AM

Buy your pickup with your pan from Canton at the same time. Their pickups are designed for their oil pans. I also agree with Tom but to answer your question I have done business with Precision Oil Pumps and found them to be everything they say they are. I was satisfied with their oil pump and kit.

Clois