<VV> Corvair fuel pump

[Mikeamauro at aol.com]

"...Why would you not buy from our Vendors?..." 
 
Well, I've tried; I've purchased from all three vendors prominently  selling 
new Corvair fuel pumps. On the Greenbrier, the result has always  been the 
same: the pumps eventually start weeping fuel from between the pump  sections. 
Tightening the top screws stems the seepage for a time, but  the leakage 
eventually returns. To improve thread bite, I've added  thread inserts in the pot 
metal bottom housings, but the relief was only  temporary. After many, many 
failures (and my complaints falling on deft ears  from the vendor), I finally 
searched out and found a good replacement from NAPA;  their part number: M3988, as 
produced in the USA by Federal Mogul. 
 
I've been using the NAPA pump for about 2-years. I took one  apart: the 
spillover "damn" IS present. Moreover,  the diaphragms are fabric reinforced. 
Again, after having multiple failures with  other supplier's pumps, the NAPA pump 
is the only one I've found that does not  eventfully start weeping from between 
the sections. I've also had other  supplier's pumps simply quit pumping for 
no apparent reason. OBTW: I use a  filter between the fuel tank and the inlet 
to the pump.
 
Curiously, I don't have the fuel weep problem on my 64 Spyder, nor the 67  
coupe; I surmise this is due to the higher elevation (in relation to the fuel  
pump) of the fuel tank in the FC design.
 
Cheers,
Mike Mauro
64 Greenbrier Deluxe, 64 Spyder Convertible, 67 Factory Air 110 PG  Coupe    


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