300zxtt Injectors in KA

[TNathe]

Can I use the 1990 300zxtt fuel injectors for my KA-T without a different fuel rail, etc.? They are 370cc also aren't they?

[SaintlyCharBoy]

iirc, there are several different injectors depending on the year of production, from what i understand tho, teh TT injectors are effectively identical to the sr20 injectors.

also the q45 ran 8 370cc injectors

[RBS14]

yes you can. Please do us all a favor and SEARCH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[TNathe]

yes you can. Please do us all a favor and SEARCH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Yeah, I did and I couldn't find a definitive answer I wanted. I wanted to double check because the last thing I want to do is spend an afternoon soldering my harnesses for new injectors and come to find out they wouldn't work all because I didn't take 5 seconds and ask. I'm not a NEWBIE! :lol:

[RBS14]

You may not be a newbie but but you sure as hell don't know how to search. I found out that they are a straight drop in by searching zilvia.......... there have only been about 400,000 threads saying so. Nothing personal.

[TNathe]

ehh. The search function pwnd me. I'll get it next time. :)

[Var]

You didnt mention SOHC or DOHC ka? i think they have different setups. The DOHC can use the sr/z32 injectors i believe.

[TNathe]

oh, my bad. it is dohc.

[[email protected]]

95-96 TTs have the same style injectors as the SR20, the 89-94 model TTs have a different style injector. So the injectors from the 1990 300ZX will not work...

iirc, there are several different injectors depending on the year of production, from what i understand tho, teh TT injectors are effectively identical to the sr20 injectors.

also the q45 ran 8 370cc injectors

[TNathe]

OK, so who's right? I got two different answers. Can someone please provide resources for the information showing that they do or do not work? Thanks, Tyler

[Bbandit]

Hmm.. I kinda get the same answer too from my friends.. one told me that only the 95 will work... but others told me that they're all the same.
I guess I have to find out for myself. I have 5 SR 370cc injectors and my friend has 6 extra injectors from his 91 z32. Im going to have to try it then and see if they work, or not..

[[email protected]]

Picture of 90-94 300ZX TT injector (LEFT) vs. 95-96 300ZX TT and SR20 injector (RIGHT):

http://www.splparts.com/Doc/Z32Injectors/CompareInjector.jpg

[Bbandit]

^^ yes you're absolutely right
I compared them today...
KA/SR injectors look exacly like the one on the right and the plastic cap on the bottom has 4 little holes.
the earlier model z32 370cc has longer tip and the plastic cap has only one hole.

one more thing i noticed bettween earlier z32 injectors vs SR/KA injectors : the connector is different. SR/KA has bigger connector.