Secondaries? Pros and cons? - ZR-1 Net Registry Forums

KILLSHOTS · 06-05-2014

Hey guys,

As I understand it, the main argument for KEEPING the secondaries is originality, whereas the main argument for REMOVING them is simplicity. Is that really it? Is there anything I'm missing here? Some other compelling reasons that I should consider one option over the other?

I'm not trying to start a poll of who has removed them and who has kept them, and I'm not really looking for opinions, e.g. "I removed mine and like it, so you should, too!" Rather, I'm just trying to fully understand the pros and cons of both options before moving forward. FWIW, my car is not heavily modified but it's certainly no NCRS candidate, either, so that's not a consideration for me.

Thanks for your input!

Blue Flame Restorations · 06-05-2014

For me, removing them was a no brainer. Less moving parts and less chance for a vac leak.

KILLSHOTS · 06-05-2014

Quote:

Originally Posted by Blue Flame Restorations

For me, removing them was a no brainer. Less moving parts and less chance for a vac leak.

Yeah, that's sort of how I see it too, Brett. But is there any advantage to keeping them, aside from just retaining the car's original complexity?

USAZR1 · 06-05-2014

Quote:

Originally Posted by Blue Flame Restorations

For me, removing them was a no brainer. Less moving parts and less chance for a vac leak.

And those less moving parts that can fall into the intake tract,causing major damage.

First time our LT5's plenum comes off,the secondaries will be history on our car.

GOLDCYLON · 06-05-2014

There are no cons

Fully Vetted · 06-05-2014

The only con is it's not original and that's only a con if you want to keep it original. If that doesn't matter to you there is no reason to keep them.

Karl · 06-05-2014

Do all 16 injectors run all the time with the secondaries removed? Or am I way off and the 16 injectors run all the time regardless?

KILLSHOTS · 06-05-2014

So far, this is pretty much the feedback I was expecting.

Please forgive my ignorance on the specifics of the system, but am I correct in assuming that removing them will disable the "valet key" function of my car? Remember, mine is a 1990 and the switch on my car functions somewhat differently than '91-'95 cars...not sure if that matters at all.

Thanks again, all!

PhillipsLT5 · 06-05-2014

Quote:

Originally Posted by Blue Flame Restorations

For me, removing them was a no brainer. Less moving parts and less chance for a vac leak.

I agree, mine are gone + 10 HP RWHP with tune, GC lost a motor with them, Marc can burn chip as needed

XfireZ51 · 06-05-2014

Quote:

Originally Posted by KILLSHOTS

So far, this is pretty much the feedback I was expecting.

Please forgive my ignorance on the specifics of the system, but am I correct in assuming that removing them will disable the "valet key" function of my car? Remember, mine is a 1990 and the switch on my car functions somewhat differently than '91-'95 cars...not sure if that matters at all.

Thanks again, all!

16 injectors operate unless motor goes idle. The advantage is that it keeps injectors operational and secondary valves cleaner.

06-05-2014	#1
KILLSHOTS Join Date: Feb 2014 Location: AZ Posts: 860	Secondaries? Pros and cons? Hey guys, As I understand it, the main argument for KEEPING the secondaries is originality, whereas the main argument for REMOVING them is simplicity. Is that really it? Is there anything I'm missing here? Some other compelling reasons that I should consider one option over the other? I'm not trying to start a poll of who has removed them and who has kept them, and I'm not really looking for opinions, e.g. "I removed mine and like it, so you should, too!" Rather, I'm just trying to fully understand the pros and cons of both options before moving forward. FWIW, my car is not heavily modified but it's certainly no NCRS candidate, either, so that's not a consideration for me. Thanks for your input!

06-05-2014	#2
Blue Flame Restorations Join Date: Feb 2010 Location: Pendleton, IN Posts: 3,904	Re: Secondaries? Pros and cons? For me, removing them was a no brainer. Less moving parts and less chance for a vac leak. __________________ 1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project

06-05-2014	#5
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,155	Re: Secondaries? Pros and cons? There are no cons __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

06-05-2014	#6
Fully Vetted Join Date: Sep 2012 Location: Rockwall, Tx Posts: 1,510	Re: Secondaries? Pros and cons? The only con is it's not original and that's only a con if you want to keep it original. If that doesn't matter to you there is no reason to keep them. __________________ _________________ 1994 AB/Grey #141 430 RWHP/392 RWTQ FBI Lyposuction / Secondaries relieved of duty / SW Long Tube Headers / Corsa Exhaust / FIC SS Injectors / MSD Coils / Lightweight Pulleys / Corey tuned B & M Shifter / Aluminum Flywheel / Samco Hoses / Shelby Series One's / C4 No Flex Frame Stiffener BBC - Bling By Carter: Custom ZR-1 Center Caps / Custom Plenum Plate / Air Box Knobs / TB Cover / Oil Filter Cover

06-05-2014	#7
Karl Join Date: May 2013 Location: Chicago Posts: 980	Re: Secondaries? Pros and cons? Do all 16 injectors run all the time with the secondaries removed? Or am I way off and the 16 injectors run all the time regardless? __________________ 1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black Sold 1985 L98 Blue On Blue Sold

06-05-2014	#8
KILLSHOTS Join Date: Feb 2014 Location: AZ Posts: 860	Re: Secondaries? Pros and cons? So far, this is pretty much the feedback I was expecting. Please forgive my ignorance on the specifics of the system, but am I correct in assuming that removing them will disable the "valet key" function of my car? Remember, mine is a 1990 and the switch on my car functions somewhat differently than '91-'95 cars...not sure if that matters at all. Thanks again, all!