Anyone know if the Greddy 720s that the RX-7 Store sells are drop in? Obviously I will need to add resistors.

Jarrett

 

Other than the resistors Yep. I am running them in my primary slots.

 

Excellent! I was going to run then in all 4 slots!

you got any other sources for injectors?

 

Yep, they are. I have had some delays ordering from them though. I just bought some Blitz ones from hopupracing.com for less. And they are the same exact injectors(I called Blitz to confirm this) made by ND. Blitz's are rated at 700cc because they use stock fuel pressure unlike how GReddy rates theirs.

 

I got the exact ones your talking about, from RX7store about a year ro so ago, then I had RCengineering do my secondaries, over sized stock 550's to 1000.


-Robert

 

I got mine from RX-7.com

James

 

Good stuff! How do you like them?

 

He likes them so much, it's now time to paint

 

I've got two from a cosmo, and two of the rx7store. Can't really tell you how they work cuz my car ain't drivable *sob*

 

How hard is it to install resistors. And why do you have to do that at all?

Tim

 

It depends on your ECU/harness setup, and it's not hard to do. If you end up having to install resistors, it's only a few bucks (like less than $15 I believe) at Radio Shack. Read Kevin's Injector writeup here.

 

My engine isn't back together yet. Not for a week probably. But I already had 2 GReddy injectors and the Blitz ones are the same ones. So now I'm going to be running 4x720cc which should be easier to tune I think.

 

So I'm confused what will happen if you don't put in the resisters? I have an 88 TII that someone put in 720 secondaries but I have no idea if he put in resisters. Hummm....

 

How's it run? If its an 88 you have high impedence injectors. Halfway through 87 they switched to them. If its running good and has been for a while then they put the resistors in apparently. Or you can just check the wiring to the injectors.

 

I installed my resistors at the ECU, check there also.

 

Well guys I have Greedy 720"s in the secondaries on my T-II. All i can say as far as a direct fittment is concerned on the T-II, you have to shave off a little bit of the plastic piece on the injector in order for it to plug in perfectly in place. The Greedy injector s were designed for the FD, not the FC, but they will fit with this little adjustment. Also im curious to know also about the resistors, as I already have the injectors installed in my T-II,and I was wondering if i do need to install the resistors for the injectors to work properly. It seems to me like they are working properly, if anybody has information on the resistors I would like to hear from you, Thank You

 

I installed mine by the injectors, but I think that by the ECU is a better idea.

Jarrett

 

Um its running absolutly very strong however I'm getting no boost. Not anything to do with injectors because the turbo wounldn't boost before the injector change however I'm going tonight to see whats the deal with the turbo.

 

I ordered the Blitz ones from Hop Up Imports (thinks for the link).

Jarrett

 

So does that mean Greddys run at 700cc with the stock fuel pressure? Can you explain this aliitle better?

 

Apparently so, since the GReddy's and Blitz's are on in the same. But if you have an upgraded fuel pump you should have higher fuel pressure I believe. I was hesistant, but called Blitz themselves to check it out prior to ordering.