trying to locate thread on mfi part

[47silver]

i read a thread here concerning a small metal device in the return line near thev3 way fitting that is located by the electric fuel pump. There was photo of the device but i cannot locate it on pelican, would anyone know where it is and post it for me?
i think that it is a check valve that would keep the fuel from backfeeding the return line that comes from the fuel filter housing. i would imagine that if the supply to the fuel filter gets clogged that the pressure would go above 28 psi and open the bypass line on the fuel pump, this line is connected to the return line to the fuel tank and to the line coming from the fuel filter.

thanks

[RSTarga]

A 75S with MFI?

[manbridge 74]

Here is the thread and a pic.

MFI Problems

[47silver]

No it is a 1972t. Thanks for the link to the thread. Is there a part number? Is this restrictor required?

[manbridge 74]

If you wade through the thread the thought was that restrictor might've been on 911s when a rear mount pump was used. I didn't use it with my front mount pump and don't notice any issues. I recently tested fuel pressure at 11psi, slightly lower than spec which is 14.6 plus or minus 3. Could be my gauge is not that accurate because my volume test is roughly double the one liter in 30 seconds. Not worried in any case.