Injector replacement -- what else is needed/suggested?
Thread Starter
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
Injector replacement -- what else is needed/suggested?
Getting ready to replace the injectors on my '91 L98 auto -- besides the injectors themselves, what, exactly do I a) *need* (gaskets, gasket sets, o-rings, seal, etc.)? and b) *should* check or replace while I have the top end apart (fuel pressure regulatory, any sensors, etc.
Thanks for your assistance!
Thanks for your assistance!
Advanced
Joined: May 2007
Posts: 82
Likes: 1
From: LA California
Getting ready to replace the injectors on my '91 L98 auto -- besides the injectors themselves, what, exactly do I a) *need* (gaskets, gasket sets, o-rings, seal, etc.)? and b) *should* check or replace while I have the top end apart (fuel pressure regulatory, any sensors, etc.
Thanks for your assistance!
Thanks for your assistance!
Bob Lam’s article on injector removal
http://webpages.charter.net/buddiel/...al)%201-04.doc
Motorcraft fuel injectors
http://www.fuelinjector.citymaker.co...ge/5516057.htm
MotorCraft# Ford# Bosch# Borg Warner#
CM-4768 F4SE A1B 0280155700 57810
Injector flow data table
http://users.erols.com/srweiss/tableifc.htm
Injector flow rates
http://www.witchhunter.com/injectordata1.php4
1985-1993 Corvette, Camaro Pontiac T/A Bosch Design III upgrade Fuel Injector
http://fuelinjectorconnection.com/sh...&productId=134
Doug’s Dirty Dozen
http://www.lindertech.com/dirty_dzn.htm
TPI Injector Replacement
http://www.thirdgen.org/injectorswap
1997-2004 Fuel Injector Replacement
http://www.vetteweb.com/tech/vemp_07...ors/index.html
NOID light
http://www.drivewerks.com/catalog/Sh...AT447_pg28.htm
How to change your fuel injectors
http://www.corvettefever.com/howto/c...uel/index.html
Understanding Fuel Injector Wave Forms
http://www.automotivetestsolutions.c...rWaveforms.htm
Intake Plenum Gasket
http://www.autozone.com/R,APP1104544...ductDetail.htm
Fuel rail seal kit
http://www.autozone.com/R,APP1136249...ductDetail.htm
Valve Cover Gasket
http://www.autozone.com/R,APP673059/...ductDetail.htm
Thread Starter
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
Thanks
for all of the great info, I'm going to have to do some reading!
One other question, it is easier/better to replace the fuel pressure regulator with a new adjustable one? or just replace the OEM gasket etc?
Thanks again!
Joe
One other question, it is easier/better to replace the fuel pressure regulator with a new adjustable one? or just replace the OEM gasket etc?
Thanks again!
Joe
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
It's the same work installing a new Diaphram or an aftermarket adjustable fuel regulator.
If you buy an adjustable fuel regulator, get the Holley because it has a lower profile and a big aluminum **** which makes adjustments easy.
http://www.jegs.com/i/Holley/510/512-501/10002/-1
http://store.summitracing.com/partde...928+4294908216
If you buy an adjustable fuel regulator, get the Holley because it has a lower profile and a big aluminum **** which makes adjustments easy.
http://www.jegs.com/i/Holley/510/512-501/10002/-1
http://store.summitracing.com/partde...928+4294908216
Last edited by GKK; Sep 5, 2008 at 02:25 PM.
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
It's the same work installing a new Diaphram or an aftermarket adjustable fuel regulator.
If you buy an adjustable fuel regulator, get the Holley because it has a lower profile and a big aluminum **** which makes adjustments easy.
http://www.jegs.com/i/Holley/510/512-501/10002/-1
http://store.summitracing.com/partde...928+4294908216
If you buy an adjustable fuel regulator, get the Holley because it has a lower profile and a big aluminum **** which makes adjustments easy.
http://www.jegs.com/i/Holley/510/512-501/10002/-1
http://store.summitracing.com/partde...928+4294908216
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
You can get all the needed gaskets in a FelPro Top End gasket set for your Vette; Auto Zone should have them in stock.
I strongly suggest that you run the fuel level in the tank down close to empty before opening the two fuel lines in front of the intake base...
It may help on reassembly if you bag & label all the bolts as you disassemble.
I strongly suggest that you run the fuel level in the tank down close to empty before opening the two fuel lines in front of the intake base...
It may help on reassembly if you bag & label all the bolts as you disassemble.
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Thread Starter
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
Throttle body bypass?
What is this throttle body bypass I've read about? Is it worth it, pros/cons, and would it be any easier to so while I have it apart for the injectors or is easy enough to do by itself at a later time? Thanks!
Advanced
Joined: May 2007
Posts: 82
Likes: 1
From: LA California
If you need more info, search this forum for bypass.
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
http://www.jegs.com/i/Holley/510/512-501/10002/-1
http://store.summitracing.com/partde...928+4294908216
Yes, I've used this Holley AFPR on my previous "89" L98. Fits perfectly and is very easy to adjust without any tools.
http://store.summitracing.com/partde...928+4294908216
Yes, I've used this Holley AFPR on my previous "89" L98. Fits perfectly and is very easy to adjust without any tools.
Last edited by GKK; Sep 8, 2008 at 10:52 AM.
