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-   C4 ZR-1 General Postings (http://zr1.net/forum/forumdisplay.php?f=14)
-   -   Secondaries (http://zr1.net/forum/showthread.php?t=34022)

mcich7781 05-22-2022 06:34 PM
Re: Secondaries
 
1 Attachment(s)
My 91 Turq has them. Still work perfectly at 93,000 miles, 368 rebuild about 15,000 miles ago. The engine builder retained them.
Attachment 17769

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Dynomite 05-23-2022 06:45 AM
Re: Secondaries
 
Quote:
Originally Posted by HAWAIIZR-1 (Post 332759)
I like the secondaries as built primarily due to emissions standard in Japan and it is one of the cool features of the LT5 design. The day there are no longer parts to keep it working I will eliminate them and go from there, but I have spares of everything so it should be working in my lifetime of ownership.


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Concur......Functional Secondaries are one of the "Cool Features" of the LT5 design :cheers:

I have one ZR-1 with secondaries eliminated and other ZR-1s with completely functional Secondaries :thumbsup:

staminqia 05-23-2022 07:09 AM
Re: Secondaries
 
Yup Mine are still functioning. I turn that key every time I pull it out of the garage! '92 - 20kmiles

Paul Workman 05-24-2022 01:08 PM
Re: Secondaries
 
Well, just to B different here, mine are eliminated due in part b/c they were smaller than the ports after I ported the runners. (37.5mm+). But, even before the porting, I had Marc eliminate that "feature" after my 2nd dive under the plenum fixing chit (leaks). I've NEVER missed them for a second. :thumbsup: And, I love the instantaneous throttle response! Good riddance! Besides...Parts that don't exist don't cost much and they seldom break!

96 coupe 05-25-2022 02:09 PM
Re: Secondaries
 
1990 #254 still on and working great!

GOLDCYLON 05-26-2022 04:09 AM
Re: Secondaries
 
Removed

ZWILD1 05-26-2022 09:59 AM
Re: Secondaries
 
1 Attachment(s)
Marc deleted them on my 91 Z . Not complaining though . Don't miss them .

A26B 05-26-2022 10:13 AM
Re: Secondaries
 
Cool feature for a stock engine. Not much use for them after porting for a full boogie 416, so they are removed.
https://cdn10.bigcommerce.com/s-nkg9...0.1280.jpg?c=2

XfireZ51 06-02-2022 08:25 PM
Re: Secondaries
 
Agree w Jerry and Paul. I never liked that split second hesitation built into the secondary port activation. Felt like turbo lag.

richarde 06-05-2022 02:02 PM
Re: Secondaries
 
Both my 1990 ZR-1's have working secondaries, which I intend to retain. My black car has run 11.7 / 118 in the quarter after having the plenum and injector housings ported, but retains the functional secondaries.


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