90 zr1 injectors

[carnold]

Need a new set of injectors. Where to buy and options available.

[GrayZ]

accel injectors...less money..summit racing...

[Z Factor]

Most either go with OEM or RC's, but some have recently opted for the Accels because of the cost.

:cheers:

[ffvetteman]

Where do you get the RC's from?

I cant find them.

[ffvetteman]

Also, what about the accel when it comes to durability?

Are they gonna last or go bad like the stockers. I got that crappy gas to worry about.

[tccrab]

Also, what about the accel when it comes to durability?
Are they gonna last or go bad like the stockers. I got that crappy gas to worry about.


RC Engineering:
http://www.rceng.com/

Accel durability, only time will tell.
As that they are designed for the fuels of today they shouldn't suffer from the senstivity to ethanol as the original Multecs.

TomC
'90ZR1 #792 (w/Accels)

[FU]

"SOME" say that the spray pattern on the R/C injectors is more like a squirt from a water pistol..... instead of a wide spray pattern from the stock injectors.

[carnold]

Decide to bite the bullet and by from AC-Direct.com.$80 primary and $67 secondaries. Plan on fixing originals and saving them for years from now I hope. Thanks for all of your input.

[Jeffvette]

Could have bought RC's for less than that, and got a better injector.

Fixing the originals basically ruins them.

[tccrab]

Decide to bite the bullet and by from AC-Direct.com.$80 primary and $67 secondaries. Plan on fixing originals and saving them for years from now I hope. Thanks for all of your input.

Are you absolutely sure you want to go this route?:icon_scra
My '90 went through 2 sets of GM Originals.
Yes, 2 sets in less than 11,000 miles.
The previous owner of my car had to replace the primaries at some point, and 3 of the 8 GM AC-Delco replacements failed again.
Classic ethanol degredation of internal seals and shorting of coils by ethanol.

They may have updated their design since 1990-92, but I could not find anywhere where this was verified. I tried calling my local dealer's parts department, they don't have a clue. They didn't know anything about the fuel injectors, either. ;)

TomC
'90ZR1 #792

[carnold]

Not sure of anything at this point will see how the new GM's do and will try and see if any mods. I know a just retired 27 year chev. guy and maybe he can find out if there are any improvements will let you know.

[tccrab]

Not sure of anything at this point will see how the new GM's do and will try and see if any mods. I know a just retired 27 year chev. guy and maybe he can find out if there are any improvements will let you know.

I'd just hate to see you invest well over $1k just for the injectors, plus $150+ for gaskets and fluids, plus the time to do it, only to have to do it all over again at some future date.
A *lot* of people have had problems with these injectors, it simply was a crappy design.
Who knows, maybe they've updated it, maybe not.
I've sent an eMail to AC-Delco, asked if they had updated the design to be resistant to ethanol.
We'll see.

TomC
'90ZR1 #792

[carnold]

Thanks mine is #832.

[ffvetteman]

I see the R-C website but which injectors do I need? Again stock specs.

[tccrab]

I see the R-C website but which injectors do I need? Again stock specs.

SL4-205

Make sure to tell them the application, i.e., ZR1, and that you're a member of the forum. We get a discount.

TomC
'90ZR1 #792

[tccrab]

Just now got off of the phone with AC-Delco tech support.

AC-Delco has NEVER updated the design of this particular fuel injector to make it compatable with today's fuel.
Nor do they intend to EVER update the design or construction of this particular injector.

Their official stance is that the injector worked for the application it was designed for.

It's not their fault that todays gas is different than the gas 16 years ago.
They are not responsible for damage caused by people using "improper" gasoline in their cars.

Bottom line:

If you put new OEM AC-Delco fuel injectors in your ZR1...
THEY WILL FAIL.

And AC-Delco does not care.

Your car, your money, your decision.


TomC
'90ZR1 #792

[bobbyhi]

Great research Tom. I hope everone reads this post for future thoughts regarding the injectors.

[Jeffvette]

I see the R-C website but which injectors do I need? Again stock specs.

Make sure you tell them which year.

Also, there is no more discount. It's just a flat price at the discounted rate. You don't have to be a member of the registry.

[ZR1FUN]

There is a post today I believe on Corvette Forum regarding injectors. The poster said GM tech told him they were not making AC/Delco injectors for the ZR1 for todays fuels and would not in the future.

Might want to consider RC's.

[vettn71]

Hopefully you checked out Fuel Injection Connection. Bosch injectors w/stainless guts, matched flow and pattern, comes with necessary o-rings - $350 per set of 16. Talked to Jon and was a great guy to work with, answering questions and explaining why these are the ones to go with.

[XfireZ51]

I have my original set off a 92. They were in good working order and ohm'd out to within .2 Ohms of each other. I just decided to go with Accels since I did the P&P on the motor last winter. If you're interested,
PM me. :hello: