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02-24-2024
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#1 |
 Join Date: Jul 2022
Location: Hilton Head Island, SC
Posts: 12
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Secondary Port Function
Have a 95 ZR-1. Am trying to understand if Secondary system is working correctly. I assume the valet key must be "on". Is there a way to tell the ports are actually working? Kick in the pants going thru 3K RPM? Or?
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02-25-2024
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#2 |
 
Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,094
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Re: Secondary Port Function
I would suggest a look at Marc Haibeck's website at ZR1specialist.com. Here is an article directly addressing your issue; there may be more. Good luck. --Bob
http://www.zr1specialist.com/HAT%20W...%20Working.pdf
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2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" |
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02-25-2024
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#3 |
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Join Date: Jul 2022
Location: Hilton Head Island, SC
Posts: 12
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Re: Secondary Port Function
WARP TEN - Thanks for the info and link. Excellent read. Great reference. I have some driving to do!! Thanks again
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02-25-2024
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#4 |
Join Date: Dec 2007
Location: Fremont,Ca
Posts: 3,078
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Re: Secondary Port Function
Haibeck sells a PLENUM PULL DVD that will show you how to actuate the secondary system while you look for any issues. It's best to have this DVD handy when doing a plenum pull,before the plenum goes back on it's possible to activate the system and watch all of the components working. The electric vacuum pump makes this possible.
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02-25-2024
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#5 |
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Join Date: Oct 2019
Location: Raymore, MO
Posts: 139
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Re: Secondary Port Function
Hi @preshenne... I have watched the video of your car from BaT many many times, and it sure sounds to me like the secondaries were very functional at the time that video was taken for the auction. Does it feel sluggish above 3k RPM? Mine comes alive between 3-4k RPM, and I've learned to hold on! Couple times I have forgotten to turn my key on, and the difference is pretty obvious... it falls on its face at 4k RPM if the key is not on.
Mike
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1995 ZR-1 #004 - Yellow/Black 1996 LT4 #3828 - Yellow/Beige/LT4/Z51 - 1 of 4 |
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02-26-2024
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#6 | |
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Join Date: Jul 2022
Location: Hilton Head Island, SC
Posts: 12
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Re: Secondary Port Function
Quote:
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02-26-2024
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#7 | |
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Join Date: Jul 2022
Location: Hilton Head Island, SC
Posts: 12
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Re: Secondary Port Function
Quote:
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02-28-2024
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#8 |
Join Date: Sep 2016
Location: Ocala, FL
Posts: 899
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Re: Secondary Port Function
If it hits 6,500 plus rpm in first and second gears they are working.
__________________
Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much. |
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