1975 280z odds and ends

[Dave WM]

In my never ending quest to get the car back to as orig as possible, I found I was missing a hard line that connects the fuel rail to the CSV. I was able to locate one, a bit rusty but otherwise in good condition. Its sitting in some evap or rust will be installing it later.  I had just a long piece of FI rubber tubing there.

I also finally figured out about the mystery grommet on the driver side quarter, the antenna drain. I am pretty sure its not connected as I can not see any tube sticking out, so I will be pulling the plastic cover off to get at it and figure out where the tube went.

I found a rubber cover for the fuel pump wire nuts, but only one. so will see if I can find another. Its a bit larger than the kind that are located on the dropping resistor by the coil.

 

[Dave WM]

something I came across while reading the Datsun engine rebuilding book is some kind of snorkel that fit from the air cleaner back to an opening just above and to the left (viewed from the front) of the radiator.

I thought this opening was some kind of fresh air vent for the passenger side (my 75 only has the passenger side fresh air vent under the dash).

So am I missing the snorkel and if so what is the purpose of drawing air from what appears to be under the fender?

 

[Dave WM]

one more question, is there any down side to not using the hard line to that CSV? just wondering why Nissan thought it was worth the effort over just using a little more FI hose.

I little more research on this and it seems the 75 did NOT use the hard line (I have a FSM that's 75-76 that shows it, but a pdf copy of a 75 only clearly shows just the rubber line, not a hard line).

so never mind, I will keep it orig, NO hard line on the 75 CSV.

 

 

Edited January 11, 2017 by Dave WM

[Zed Head]

Do you have a picture of the FSM image showing the rubber only?  I can't find it.  Also just realized that the commonly available electronic 1975 FSM appears to actually be the 1976 FSM.  The actual 1975 FSM seems very crude, with misspellings.

The 76 image shows a separate pipe that could easily be transplanted from a 76 to a 75, if they did start with a long rubber hose.  My impression of their system is that they only used very short pieces of rubber to connect metal tube, over the manifolds.

[Dave WM]

[Dave WM]

[Dave WM]

I am not very good at attaching pics but here you can see illustrations of a rubber hose. these same differ on the 76 FSM

[Dave WM]

lastly here it state the use of rubber fuel hose

[Dave WM]

So you think the idea as to minimize the use of rubber (therefore rupture possible with fuel leakage) around the hot exhaust manifold? Perhaps one of the reasons they went with the solid hard line fuel rail later (vs the two section connected with hose).