Upgrade Z32TT Injectors

Wyn

Wyn

Club Member
Just a few Q's as I know very little about this :unsure:

Been looking at upgrade injectors for a Skyline RB25 engine
Seems the Z32TT uses the same upgrade fitment and sizes ?

So what cc is a stock series 1 Z32 VG30DETT injector ?
What years did a series 1 run from and whats the difference to the series 2 injector?
I assume thats all the series made? Are they all side feed ?

As a start upgrade some i've looked at are listed at 550cc and others at 555cc
Why is that? Is it just the diffo between 2 makes ?
I take it those 2 types fit the same and give the same results?
 
Stock s1 and s2 are 370cc. I think the change was in 1994. Both are side feed but the rail and manifold casting was changed to fit the new type injectors. It is possible to machine out an s1 manifold casting and fit the s2 rails and injectors. Wiring plugs also require changing to fit.

Unless you are going to very big turbos 550cc will do most mods. Most larger injectors are s2 type but not all I have some 540cc s1 type, but now i run 740cc s2 type. Dont forget you will need to reprogram the ECU.
 
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