A few simple questions about the primary fuel rail.

Are s4 TII and s4 NA primary fuel rails identical?

are the threads the same pitch on both side of the fuel rail?

What are the thread size and pitch of the in and out of the fuel rail?

Thanks!

 

They are not the same, which are you trying to use and what are you trying to do with it?

 

Well mostly I am just trying to figure out what is worth saving, and what I will get rid of...mostly.

I am using a turbo s4 primary rail and I am trying to figure out the thread size going into both sides so I can order the proper AN fitting and lines

 

This thread has the sizes for a S4 turbo rail.

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/what-should-i-need-400-hp-fuel-system-823306/

 

I dont see anything in that thread that explains the thread size of the banjo bolts on the primary rail.

 

There are only two things threaded on the primary fuel rail, both are supplied on the picture.

 

I guess i did not see the threads listed on the picture, thanks for clarifying

 

Okay so the diagram in the other thread is not right for my rails. Neither one of my rails, primary or secondary are threaded the same. I don't know what the deal is but it is a headache.

 

If you think that you have aftermarket or altered rails, then just take them to your local hardware store or race shop and see what fits.