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07-25-2012
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#1 |
 Join Date: Jul 2011
Location: grosse isle, manitoba, canada
Posts: 52
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ex manifold bolts falling out?
I just noticed several of my exhaust mainifold bolts are missing (that I can see). weird. Vibrated loose? Are these cars known for this? The threaded holes are shinny on some....recent loss? My question is do these cars come with 16/side like one would think? FSM pp 6A2-33 shows 6 which almost corresponds to the ones I have left....Very wierd....And can you get the spacers anywhere.......thanks
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07-25-2012
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#2 |
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Join Date: Jul 2004
Location: Sudbury, Ontario. Canada
Posts: 1,540
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Re: ex manifold bolts falling out?
I don't believe that they were all installed from the factory. Someone else can confirm I'm sure.
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1991 #1516 Black/Black davidmkelly.com "Speed is often confused with insight." - Johan Cruijff |
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07-25-2012
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#3 | |
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,680
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Re: ex manifold bolts falling out?
Quote:
Yes. Came like that from the factory. On my headers i only have 2 per tube across/kiddie corner of each other. Pete
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'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage Last edited by Pete; 07-25-2012 at 10:43 PM. |
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07-25-2012
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#4 |
 Join Date: Aug 2006
Location: McLean, VA
Posts: 3,710
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Re: ex manifold bolts falling out?
No - exhaust bolts are not falling out. We, the WAZOO gang, have installed 3 or 4 headers and in all cases noted only 6 or so bolts were actually used per side for install at the factory although early LT5s have 16 bolt holes per side and 93+ cars have 14 bolt holes per side (top left and top right has dowels instead of bolt holes).
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07-25-2012
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#5 |
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Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,828
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Re: ex manifold bolts falling out?
Thanks to the thick flanges, and very square sealing surfaces, few bolts are required in order to maintain adequate sealing.
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2004 Z06/Z16 LeMans Commemorative Edition 1991 ZR-1 #302 White/Gray (sold) 1991 ZR-1 #1147 Red/Saddle (sold) |
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07-26-2012
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#6 |
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Join Date: Jul 2011
Location: grosse isle, manitoba, canada
Posts: 52
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Re: ex manifold bolts falling out?
Thank you so much! You guys are great! Who would have thought?
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07-26-2012
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#7 |
 Join Date: Jul 2009
Location: Texas
Posts: 793
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Re: ex manifold bolts falling out?
Yes when i removed my factory exhaust there was a number of bolts missing. When I put the obx's on I put them all in
Dave |
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