Hi Lorne The rollers are on the first page of this excellent post.
MFI Open Heart Surgery II - The Fuel Pump
My rollers went AWoL, not worn out..
I've done a lot of Pelican searching for MFI fuel pump parts and know this much so far! Here's some background research if any one is interested:
-The Chinese replacement ones are reportedly not so good.
-The Porsche replacement ones are now possibly ok, but $$
-The 'Fuelpumpking' ebay ones are the Chinese ones, but also possibly wrong physically, and likely for the carbed 911 variants. Two of the three inlet/outlets should be the same on the MFI pump, one will be smaller o/d.
-The rebuilds are ok, but some leaked in the past. Lots of people have had success.
- The MFI system has an inbuilt 1 Bar (15psi) fuel pressure regulator included in the fuel filter housing. Grady Clay has/had :-( some great, informative posts about how this works, and why it may not be such a great idea introducing CiS type pressures upstream of this.
-Zimms (+probably others) provide a replacement 1 bar pump, probably the Walbro one, but you need to forgo originality and ditch the third fuel line back to the tank (not a real problem, but they still won't fit in the original '72 position in the rear). And then you need to relocate the pump on the front cross member, 'old style'.
-Nor will CiS pumps with an aftermarket (eg PMO) fuel pressure regulator fit in the original position. From what I have seen, they all have an inlet on one end and outlet on the other. There is so little space in the rear factory position that barely the original pump fits.
-Other options for parts hunters are anything original Bosch D-Jetronic. Different pressures and specs, but lots of similar internals from what I've seen.
-Benz made some similar pumps for their MFI cars early '70's. Still hard to find for parts here. Alfa Montreal as well, but rarer that early 911 MFI!
- Nissan 240Z in the states also used D-Jetronic. Possible cheaper parts if you can find them.
-Rover SD1 used a similar roller cell Bosch pump I think.
-All, from what I can see Bosch CiS pumps are roller cell, including the 044 Motorsport pump. Hence me asking if anyone is able to measure the internal bits.
I'm basically asking for some parts suppliers to retain originality if at all possible. Cheers!