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#11 |
Join Date: Dec 2012
Location: NC
Posts: 1,786
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Some 2nd vac pump breakdown / diags snappics here, starting post #346 http://www.zr1.net/forum/showthread.php?t=21439&page=9
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I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG] |
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#12 | |
![]() ![]() Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,791
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Secondary port vacuum diagnosis TIPS ![]()
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Left Clickable links ![]() -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 08-03-2014 at 02:37 PM. |
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#13 | |
![]() Join Date: Mar 2014
Location: Warrington PA
Posts: 1,913
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![]() Still in the learning process with all of this, had no idea or reason to believe that the secondaries could or would be eliminated on my 94. And yes as stated before it does make sense that if the secondaries were in tact and the pump disconnected that the engine would not run as good as it does. Now I need to find out who removed them and when.....hmmmmm!!!
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member |
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#14 | |
![]() ![]() Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,791
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![]() Also.....you might have a modified chip to account for secondary removal...... ![]() It appears that you do not have functional secondaries....and possibly someone removed the secondary function without removing the whole secondary system (tying the secondaries open for example and leaving all the vacuum lines in place).
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Left Clickable links ![]() -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 08-03-2014 at 02:57 PM. |
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#15 | |
![]() Join Date: Mar 2014
Location: Warrington PA
Posts: 1,913
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If you might remember I had the Tim Holland Chip in there from the early GM engineering days of ownership. I then ordered a chip from Marc, and of course at the time had no idea that my secondaries might be eliminated. The main reason I went with the chip was to get the fans to come on & off at the lower temps. So Marc's chip that is in there now, does not have any provisions for secondary removal. And I know I keep repeating myself, but it runs great..... I have noticed some oil around a Torx screw or two, especially around number 1 cylinder, so I need to snug those down. Actually I need to retire to keep up with my vehicles, but I am a few years away from that. I'll just wait until the colder weather before I do a pull, did receive my DVD from Marc and with your links and people who have done it already, hopefully it won't be complicated once I get into it. And being in the area of the WAZOO gang, maybe I can hook-up with them sometime in the future whenever they do a Plenum pull day....... ![]()
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member |
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#16 | |
![]() Join Date: Mar 2014
Location: Warrington PA
Posts: 1,913
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member |
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#17 | |
![]() Join Date: Mar 2014
Location: Warrington PA
Posts: 1,913
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member |
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#18 | |
![]() Join Date: Feb 2014
Location: AZ
Posts: 860
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#19 |
![]() Join Date: Mar 2014
Location: Warrington PA
Posts: 1,913
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member |
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#20 | |
Join Date: Apr 2014
Location: poughkeepsie ny
Posts: 33
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