1990 Zr1 Fuel Injectors - CorvetteForum - Chevrolet Corvette Forum Discussion

Register FAQ Search Today's Posts Mark Forums Read Vendor Directory

C4 ZR-1 Discussion General ZR-1 Corvette Discussion, LT5 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track

1990 Zr1 Fuel Injectors

Reply
 
 
 
Thread Tools Search this Thread
Old 06-21-2011, 10:40 PM   #1
1966 BigBlock
CF Member
Thread Starter
 
Member Since: Feb 2011
Location: Nipomo California
Posts: 59
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1990 Zr1 Fuel Injectors

My secondary's started acting up this past weekend on my 8500 mile car. I am going to change primary and secondary's with stock equipment. Anybody have any suggestions on who is the best vendor to purchase from and the required gaskets I am going to need?
1966 BigBlock is offline   Reply With Quote
Old 06-21-2011, 11:24 PM   #2
XLR8TIN
CF Senior Member
 
XLR8TIN's Avatar
 
Member Since: Jan 2002
Location: Scottsdale AZ
Posts: 591
Thanks: 0
Thanked 1 Time in 1 Post
Default

http://jerrysgaskets.com/store2/root/
Go with Accel or RC injectors
XLR8TIN is offline   Reply With Quote
Old 06-22-2011, 12:22 AM   #3
Dominic Sorresso
CF Senior Member
 
Dominic Sorresso's Avatar
 
Member Since: Sep 2000
Location: Bartlett IL
Posts: 4,485
Thanked 6 Times in 5 Posts
Default

What does that mean, " my secondaries are acting up" ?
Why does that indicate injectors?
Dominic Sorresso is offline   Reply With Quote
Old 06-22-2011, 12:30 AM   #4
zr-1 guy
CF Senior Member
 
Member Since: Apr 2011
Posts: 708
Thanks: 0
Thanked 1 Time in 1 Post
Default

if you swap them out with stock injectors you're going to be pulling them out sooner rather then later again. swap in after market or ever 93-95 injectors and save yourself lots of time and money
zr-1 guy is offline   Reply With Quote
Old 06-22-2011, 02:56 AM   #5
Paul Workman
CF Senior Member
 
Paul Workman's Avatar
 
Member Since: Oct 2004
Location: "Below I-80" Illinois
Posts: 4,457
Thanked 67 Times in 61 Posts
Default

Quote:
Originally Posted by zr-1 guy View Post
if you swap them out with stock injectors you're going to be pulling them out sooner rather then later again. swap in after market or ever 93-95 injectors and save yourself lots of time and money


My 90 had NOS (new original stock) exact replacements installed when I bought the car. They lasted 3 years before they too succumbed to the alcohol in the fuel.

I replaced them with the Accel #150821 that I got new from Summit Racing for 16 injectors for about $550 shipped.

Summit might tell you these injectors are not for the LT5. Ignore them, if they do (or don't say what you're application is).

The only thing is you have to do to is remove the little plastic key tab on injectors intended for use in the secondary (or was it the primary?) injector app. (Took me less than a minute ea. when using a Dremel and a grinding spool.)

And, I too echo what Dominic asks regarding the process that lead you to concluding the secondary injectors were at fault? (They may well be bad. Just interested in the process, is all)

P.
Paul Workman is offline   Reply With Quote
Old 06-22-2011, 06:18 AM   #6
96LT4
I'm so overchicked!
Former Moderator
Cruise-In II Veteran
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In V Veteran
Cruise-In VI Veteran
CI3 Car Show Winner
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
 
96LT4's Avatar
 
Member Since: Jan 2000
Location: Kennesaw, GA www.96LT4.com
Posts: 56,485

Thanked 18 Times in 8 Posts
Default

I put FIC in my 95. So far, so good.
96LT4 is offline   Reply With Quote
Old 06-22-2011, 10:13 AM   #7
mike100
CF Senior Member
 
mike100's Avatar
 
Member Since: Aug 2008
Location: San Marcos CA
Posts: 4,116
Thanked 20 Times in 16 Posts
Default

I used The Lucas disc type injectors for all 16 positions in my car. The bosch parts probably duplicate the oem spray pattern best, but my car passes CA emissions with ease and idles good at 650, so any of the available injectors for the LT5 should be better than original failed units.
mike100 is offline   Reply With Quote
Old 06-22-2011, 11:08 AM   #8
VetteMed
Tech Contributor
 
VetteMed's Avatar
 
Member Since: Aug 2005
Location: Orlando Florida
Posts: 6,321
Thanks: 0
Thanked 1 Time in 1 Post
Default

Running FIC here too, no complaints.
VetteMed is offline   Reply With Quote
Old 06-22-2011, 11:21 AM   #9
1966 BigBlock
CF Member
Thread Starter
 
Member Since: Feb 2011
Location: Nipomo California
Posts: 59
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1990 Zr1 Fuel Injectors

Quote:
Originally Posted by Dominic Sorresso View Post
What does that mean, " my secondaries are acting up" ?
Why does that indicate injectors?
The car runs great at normal power but switch to full power and step on it and it started missing.
1966 BigBlock is offline   Reply With Quote
Old 06-22-2011, 11:34 AM   #10
Z51JEFF
CF Senior Member
 
Z51JEFF's Avatar
 
Member Since: Dec 2003
Location: Fremont Ca. I will do No business with ANY company that boycotts Arizona.
Posts: 8,537
Thanked 21 Times in 18 Posts
Default

Ive also got Accels.These are the same as an L98,just double 16 instead of 8 and also got mine from Summit for the same price.Dont be surprised that the injectors died at 8500 miles,mine died at 8000 miles.
Z51JEFF is offline   Reply With Quote
Old 06-22-2011, 02:28 PM   #11
1966 BigBlock
CF Member
Thread Starter
 
Member Since: Feb 2011
Location: Nipomo California
Posts: 59
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1990 Zr1 Fuel Injectors

Quote:
Originally Posted by Z51JEFF View Post
Ive also got Accels.These are the same as an L98,just double 16 instead of 8 and also got mine from Summit for the same price.Dont be surprised that the injectors died at 8500 miles,mine died at 8000 miles.
And I hear the gas is going to get worse for our cars with more ethanol content.
1966 BigBlock is offline   Reply With Quote
Old 06-22-2011, 03:00 PM   #12
BlackbirdZ07
CF Senior Member
 
BlackbirdZ07's Avatar
 
Member Since: Oct 2000
Location: Albuquerque NM
Posts: 3,539
Thanks: 0
Thanked 10 Times in 9 Posts
Default

FIC... is that Fuel Injector Clinic or Fuel Injector Connection??

Fuel Injector Connection lists several options for LT5's: rebuilt originals modified to accept ethanol, a set that looks like originals, and a cheaper set for $350.

IF you're talking about Fuel Injector Connection, which set are people using?
BlackbirdZ07 is offline   Reply With Quote
Old 06-22-2011, 03:19 PM   #13
VetteMed
Tech Contributor
 
VetteMed's Avatar
 
Member Since: Aug 2005
Location: Orlando Florida
Posts: 6,321
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by BlackbirdZ07 View Post
FIC... is that Fuel Injector Clinic or Fuel Injector Connection??

Fuel Injector Connection lists several options for LT5's: rebuilt originals modified to accept ethanol, a set that looks like originals, and a cheaper set for $350.

IF you're talking about Fuel Injector Connection, which set are people using?
Fuel Injector Connection. I think most of us are running the rebuilt Bosch $350 set. They have orange tops, and aren't the prettiest injectors in the world, but seem to work well and are ethanol tolerant.
VetteMed is offline   Reply With Quote
Old 06-22-2011, 03:31 PM   #14
zr-1 guy
CF Senior Member
 
Member Since: Apr 2011
Posts: 708
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by 1966 BigBlock View Post
And I hear the gas is going to get worse for our cars with more ethanol content.
up 5%...thank your local corn growers. not to mention you're now getting 5% worse MPG then before.
zr-1 guy is offline   Reply With Quote
Old 06-22-2011, 03:38 PM   #15
1966 BigBlock
CF Member
Thread Starter
 
Member Since: Feb 2011
Location: Nipomo California
Posts: 59
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1990 Zr1 Fuel Injectors

Quote:
Originally Posted by zr-1 guy View Post
up 5%...thank your local corn growers. not to mention you're now getting 5% worse MPG then before.
Yea, I'm in California where this garbage is going for over $4.00 a gallon.
Thank you very much!!
1966 BigBlock is offline   Reply With Quote
Old 06-22-2011, 09:04 PM   #16
Z51JEFF
CF Senior Member
 
Z51JEFF's Avatar
 
Member Since: Dec 2003
Location: Fremont Ca. I will do No business with ANY company that boycotts Arizona.
Posts: 8,537
Thanked 21 Times in 18 Posts
Default

Just for the record you cant rebuild a fuel injector,they dont come apart from what Ive read,dont know what exactly constitutes a rebuilt fuel injector.If these are being rebuilt,internal components replaced this might be something new.The ethanol content increase at this point is still up in the air and stations have the option of selling it or not.Nobody knows the extent of possible damage to older car components.Anybody that has even the slightest concerns about this type of thing needs to join the Sema Action Network,its free.
Z51JEFF is offline   Reply With Quote
Old 06-22-2011, 10:09 PM   #17
bb62
CF Senior Member
 
bb62's Avatar
 
Member Since: Dec 2004
Posts: 3,753
Thanks: 0
Thanked 12 Times in 9 Posts
Default

Quote:
Originally Posted by 96LT4 View Post
I put FIC in my 95. So far, so good.
Why did you change the injectors in your 95. The 405HP cars don't have the same injector issues as the earlier cars due to the different design.
bb62 is offline   Reply With Quote
Old 06-23-2011, 07:14 AM   #18
HammerZR1
CF Senior Member
 
HammerZR1's Avatar
 
Member Since: May 2006
Location: Nampa ID
Posts: 633
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I put the rebuilt FIC injectors in my '91 in November 2008 and they have performed flawlessly since then. Gets around 26 average MPG on the highway.

Idaho started emissions testing and the car passed with flying colors in May. The TSI test was used and the produced the following results:
HC PPM Idle...Reading 129...Limit 220
CO % Idle...Reading 0.01...Limit 1.2

Car had the following mods when tested:
Open AC Lid w/ K&N Filter
Flowmaster Cat-Back

Hope this info helps.
HammerZR1 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • 1990 Zr1 Fuel Injectors
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    need help with ca smog oldpro C4 ZR-1 Discussion 70 05-13-2016 05:05 PM
    Holley 4150 SA jet size and idle circuit question? C3Paul C3 Tech/Performance 15 08-23-2013 03:45 PM
    Holley 4011 questions scottyp99 C3 General 4 03-13-2012 04:32 PM
    How do I tell if my Secondary Barrels are working? Allcoupedup C1 & C2 Corvettes 5 11-07-2002 11:29 PM
    Jet size for 780 holley 467-Ratman C3 Tech/Performance 10 08-17-2002 02:17 PM


    Tags
    1990, 1990zr1, corvette, emissions, fic, fuel, injector, injectors, install, lt5, mpg, part, requirement, tpi, zr1

    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 08:06 AM.