Fuel Injectors

[ffvetteman]

OK

So what is the opinion overall on which injectors I should get?

I dont drive the Z a lot so it has some sitting time. I dont want them to rust up and have to replace them in 5 years.

When I do drive it, I drive it hard. The secondarys are always open.

[WB9MCW]

Originally Posted by george henry

OK, need a little clarification here. I'm about to replace all my injectors in 1990 #1507 with Accels ($27 each at Auto Shop racing engines). I called Haibeck about these o-rings and he said the info is a little misleading and I don't really need them. So now I'm confused. Any help?
PS: I'm a new Net Registry member.

Welcome GH to the forum!

[tccrab]

Originally Posted by ffvetteman

OK

So what is the opinion overall on which injectors I should get?

I dont drive the Z a lot so it has some sitting time. I dont want them to rust up and have to replace them in 5 years.

When I do drive it, I drive it hard. The secondarys are always open.

If it's to be a NCRS judged car, order up a set of AC Delco and live with the fact that you will replace them over and over and over.

If cost isn't an issue, the RC Engineering fuel injectors are the next most expensive and a lot of people have used them. Ask some of the builders/tuners out there what they think of them. Some use them, some don't.

The Accels are new, so far only a handfull of us have them installed, so there's no real hard supporting evidence on longevity or reliability.
My "Seat 'O Pants" dyno tells me that mine are working JUST FINE and hopefully will continue to do so for some time to come.
The price was right too.
Accel is a pretty big name, and I'm hopeful that if there's problems they will be helpful and friendly.

[rant ON]
AC Delco was NEVER helpful, friendly or stood by their product.
And they NEVER WILL.
The original AC Delco Multecs were (and still are) a flawed design from the get-go and because it was such a limited production run they never updated the injectors nor offered to replace them.
They're "Official Corporate Response" is:
"We designed them for the gasoline at that time, it's not our fault that you're putting bad gasoline in your car that ruins your injectors".

Don't get me started.... I spent hours and hours on the phone and trading emails from the flunkies at AC Delco.
Got me NOWHERE.
A complete waste of time and effort.
[rant OFF]

TomC
'90ZR1 #792

[ffvetteman]

I agree, AC delcos will not be going back in the car. Just for fun, I went to the dealership to price them out, since I wanted to check on crate engines for another car, and they are still available at $180 each, thats over $2800 to replace all 16!!

I am mostly concerned about durability. I dont want to do this again int he next 5 years. My choise is between the R/C and the Accel, just cant decide at this point.

[ffvetteman]

Originally Posted by george henry

OK, need a little clarification here. I'm about to replace all my injectors in 1990 #1507 with Accels ($27 each at Auto Shop racing engines). I called Haibeck about these o-rings and he said the info is a little misleading and I don't really need them. So now I'm confused. Any help?
PS: I'm a new Net Registry member.

Yes welcome to the forum!!

Im not sure on that either. When I helped replace a set in Effingham last year on the 90, I believe we did use O-rings. I was going to order them just as a safe measure. But I would tent to believe Haibeck also.

Anyone else got the correct info?

[Ccmano]

I've spoken to Haibeck personally (and in person) about the o-rings, he says special ones are not required on the Accels or the RC's. I just ordered a set of Accels for my car, everyone I've talked to that put them in is happy with them. Just make sure thay are the new silver (nickel) bodied ones and not the older design yellow ones.

Hans

[Aurora40]

Originally Posted by tccrab

If it's to be a NCRS judged car, order up a set of AC Delco and live with the fact that you will replace them over and over and over.

I'm fairly sure the Delphi ones are visually indistiguishable from the originals. They are resistant to ethanol. Not too many people seem interested in going that route, but just wanted to toss it out again.

Mine cost me about the same as RC's would have. Though if you go with the '90 style primary it would probably be a couple hundred more as they were ~$20 more each.

[ffvetteman]

Originally Posted by 1990 quasar blue

http://www.autoshopracingengines.com/

432.00 for all 16.

Nice catch!!!!

Are all 16 the same? I thought they were different between primary and secondary.

[Ccmano]

Originally Posted by ffvetteman

Nice catch!!!!

Are all 16 the same? I thought they were different between primary and secondary.

Yes all 16 are the same. Put them in and go..

Hans

[ffvetteman]

Originally Posted by tccrab

Mine are working just fine!

Accel 150121 if bought individually, Accel 150821 if bought in packs of 8.
The best deal is from Atlantic Speed Performance Parts, $249.88 for pack of 8. Plus they send a nifty "Tee" shirt with your order. There might still be a discount if you mention the ZR1 Net Registry.
http://www.atlanticspeed.com/
You'll need Marc Haibec's special "O" rings if your Z is a 90-93 for the primary injectors.
http://www.zr1specialist.com

What makes you think that your injectors have gone bad? Have you measured the resistance of the injector coils?
No sense climbing under the plenum if you don't absolutely have to...

TomC
'90ZR1 #792
Honorary Pirate

I went to place an order with them and they dont show a payment type using a credit card without using paypal!! Idont have paypal.

I sent them a e-mail to see if they will do a credit card and no paypal.