I've decided to start doing some research in order to study and prepare for my future project which is to turbo my 98, 3.5 swapped Maxx.

I've tried to find out (and forgive me if its a newbie question) but what size of injectors do the 3.5's have and what options do I have as far as bigger injectors. Can I still use the 300zx TT injectors with the 3.5 rails!?

I'm looking to start my project by next summer so, clearly, I have plenty of time to research and learn.

What I am hoping to do is to start upgrading my fuel system right now, tune it, and run with it like that until I better understand the turbo set-up.
Thanks in advance!

 

No. 3.5 rails require top-feed injectors. There plenty of companies that make these type of injectors, RC Injenctors, Deatch Werks, NISMO, etc.

The most popular is probably RC. RC 440s are the most common since they come with a couple of Z33 TT kits. These usually go for less than $250 on many 350z/G35 boards.

As for upgrading the fuel system, you must convert that VQ35 returnless rail onto a return system. The simply entails an AFPR after the rail (the system stays returnless from a fuel rail perspective). Since the return lines are already laid out, this is a freebie for us.

Aside from a high flow fuel pump, I wouldn't worry about upgrading fuel line sizes unless you intend to exceed 500 whp.


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FWD VQ35s have 315cc injectors when rated at 3.5 bar of fuel pressure. My sig makes it obvious which injector company I'd go with (and have gone with) personally.