I am in the process of swapping to carbs, and could use some expertise..... So far I've boiled out the fuel tank, replaced all of the old rubber lines, and have circulated a gallon of injector cleaner through the three front to back steel lines for a couple days to get rid of all the old fuel lacquer. I picked up a NOS pump from a Carb'd RX7, and new inline fueltank to pump filter. The existing fuel pump is not original...... and does not have the check valve in question..... Looking at carpartsmanual.com - Section - "" From aug-'76 "" ( Fuel Pump and Fuel Hose ) Item #20 indicates -

""Kit-ValveCheck"" PN:17014-N4225 Question: Should there be a check valve on the outlet of the fuel pump?

Risking being flamed and burned to the ground.... Can someone please suggest the best thread about the ideal orientation of return-flow type fuel piping setup - Filters / Pressure Regulator etc etc Thanks for the help. mel

search - fuel pump check valve - by jazfe - Thanks OneFastWoman

I thought that some of the carb guys would have responded to your post but maybe they were thrown by the title and its reference to 1976 and a check valve. That's EFI stuff.

I don't think that you need a check valve with carbs. The float bowls hold enough fuel to get the engine started, then the pump refills them.

I would start another thread, with a good title, about the fuel lines to and from the carbs. People open threads that look interesting to them and "280Z fuel pump check valve" is boring to carb guys. Put the word "carbs" in the title. I only opened your thread because I have a 1976 280Z. If it said carbs I probably would not have (no offense to the carb guys).

Heh Thanks ZED - That's good advise, I knew I was in trouble when I answered my own enrty...