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I have "unearthed" an old school parts store that has some N.O.S.
++ A C ++ Fuel Pumps on their shelves....
Haven't "run a 40712 at 'em" yet -- Give me a ring...
Craig, here -- happen to be "passing by the thread"....
Did you get the message I left you a couple days ago??
Any questions or comments, give me a holler....
Thanxxxxxxx, Craig.....
The older NOS fuel pumps do not have the ethanol resistant diaphragm in them.
Running gas with ethanol puts you at risk if a failed diaphragm and a crankcase full of gas.
I have done much research on this lately and not sure this is always true. I had one on my Rallye 350 for many years with no problem. The one on my W-30 is only 10 months old so it is not a good source for information. The diaphragms are made of a couple different types of rubber over the years and some are ok from back then. I know of many NOS pumps on 66 and newer cars with no problems.
Edit... I installed the pump on the W-30 engine two years ago and was running on the dyno so it has two years of pump gas in it.
As discussed on this forum -- and 28 other old car forums -- this ethanol
gas is AWFUL....
The N.O.S. pumps have issues because the internal rubbers are not equipped to handle this ethanol gas -- swell -- and then leak....
Because of ethanol gas, it has sprung to life "new-fangled" companies that are making fuel pump rebuilding kits and carburetor rebuilding kits -- in a new material -- that IS ethanol gas - compatible material....
(Of course, more expensive than the old kits!!!! But unfortunately NOW A MUST!!!!)
In the case of a 40712 Fuel Pump -- as PROPERLY illustrated in the above
picture -- they are "CRIMP" style pumps -- and Nobody YET (there will be
some outfit soon, undoubtedly) can rebuild those pumps properly without
making a mess of the crimp portion -- in opening it up and re-securing
it.....
In fact, that COULD be an interesting business proposition -- for somebody motivated to "Be the Man" by doing it -- if you are that person, let the whole world know!!!! But, DO IT RIGHT ONLY!!!!
Risk of failure, fire, death.... nope
You have to START by destroying the crimp, one way or another. And the patina. For a limited number of notoriously tight buyers.
AT BEST you end up with a recrimped or a crimp-on ring or a screwed together assembly, and that won't please the snooty judges at the Car Show D'Elegance.
You'd be better off gutting a FP so it LOOKS right, but just passes fuel thru, and run an electric pump in the tank.
As for the OP here, I found this in the garage last night. It's not really NOS, but it was good enough to save on the special shelf of pumps.
Any clues as to the digits other than PN should be shared. Date Code? Looks like a Julian date and "R" for assembly plant or supplier or something to me.
When I re-did the '66, I made a mold of the PN boss and the "AC" thing and placed those items onto the new from the store FP, in order to best look like the original unit.
Last edited by Octania; March 4th, 2016 at 05:47 AM.
Because of ethanol gas, it has sprung to life "new-fangled" companies that are making fuel pump rebuilding kits and carburetor rebuilding kits -- in a new material -- that IS ethanol gas - compatible material....
(Of course, more expensive than the old kits!!!! But unfortunately NOW A MUST!!!!)
So other than the accelerater pump cup and the needle valve seal (which has been Viton for as long as I can remember) what exactly in a carburetor kit is a different, more expensive material to resist ethanol fuel?
Sorry I have been away.
Craig got your message will call.
Octania I will PM you and thanks for the pictures.
Rocket Vapor thanks for the pictures as I was trying to find some.
Eric I am with you put it on and go.
Maybe at some point some one can rebuild these crimped pumps but in the mean time I want to put one on my car and see how long it lasts. It won't be driving mine much. Just want to take it to a couple of shows for people to see, get judged and then put it up like it has been for all these years. I have owned this car for 35 years. Judges yes, I am sure will nit pick your car without the correct pump. Nothing ventured nothing gained. I am still looking.
Last edited by easyd; March 4th, 2016 at 04:12 PM.
Down here, in sunny South Florida, we have some gas stations that offer "Rec 90"; which is 90 octane gas, WITHOUT alcohol in it. It is easily accessible to pump into your vehicle, as opposed to leaded race gas, which can only be pumped into a fuel jug for "off road use". I'm not sure how widespread this fuel is, but it may be worth checking into in your area.
Down here, in sunny South Florida, we have some gas stations that offer "Rec 90"; which is 90 octane gas, WITHOUT alcohol in it. It is easily accessible to pump into your vehicle, as opposed to leaded race gas, which can only be pumped into a fuel jug for "off road use". I'm not sure how widespread this fuel is, but it may be worth checking into in your area.
I will check into that option. Back in the good old days we would just use about half a tank of Amoco White and go to the airport with our gas cans and get some good ole Avgas. The car won't be driven much but we will enjoy it as I don't own a museum.
I am sure it fits a few cars. My application in for a 70 442 W-30 455 with A/C.
Thanks for asking!
That's a bit of an understatement. Just from the 1975 issue PN Manual on CD, I get the following list for Gr. 3.900, PN 6470330, which should be the one stamped 40712:
70 4800 [Vista] 455 Eng. 4 BC;
70 455 Eng. C.A.C.;
70 5400, 6400, 6600 Perf. Eng. C.A.C.;
71 3200, 3600, 4800 455 Eng. 2 BC C.A.C.;
71 4400 (442) exc. O.A.I.;
71 5400, 6400, 6600 Perf. Eng. exc. C.A.C.;
71-72 5400, 6400, 6600, 6800, 98 C.A.C. 455 Eng.;
71-72 Tor.; 72 F85 455 Eng. exc. W30
72 5400, 6400, 6800, 98 455 Eng. C.A.C.
73-74 All X 350 Eng. 4 BC [X = Omega];
73 all A 350 Eng. 4 BC Floor Shift & CAC;
73-74 all A, BL, BN, 350 Eng. 4 BC CAC;
73 AF, AG37, AJ57 350 Eng. 4 BC 4/S S.T. & CAC;
73 all A w/ Opt. L34, M15 & C60;
73-74 all A, B, C 455 Eng. CAC; 75 all X 260 Eng.;
75 BL, BN 350 Eng.; 75 all A, B, C 455 Eng.
Still not sure it my '68 needs the one I have.
Last edited by Octania; March 5th, 2016 at 09:25 AM.
February 23rd, 2016, 12:59 PM
