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01-23-2003, 12:36 PM
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#1 |
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Registered User
Join Date: Jun 2002
Location: DFW, TX
Posts: 1,680
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Can Header Bolts be too tight???
I have a set of Dynomax ceramic coated header that have been on since September. I have the typical problem of bolts loosening up over time and I have to tighten them back due to small leaks.
A couple days ago I tightened my bolts down due to a small leak and for some reason I still have a leak on the driver's side. Is it possible to tighten these bolts too much and warp the flange? As I said, the headers are fairly new and I've only retightened them twice. I installed the gaskets that came with the headers (FelPro) and did NOT use locking bolts. At the time I bought my exhaust system, I didn't have the extra $40.  Thanks in advance... 
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Scott Shelbourne |
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01-23-2003, 01:08 PM
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#2 |
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BeWarE tHe eViL CrAnkTOe!
Join Date: Oct 2002
Location: Yukon, OK
Posts: 3,605
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Yes, you can do just what you described...but worse you can snap a bolt off in the head!! EEK!!
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~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - 1986 Chevy Custom SWB *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods  www.cardomain.com/id/ramairdave AIM Screenname - Jester84 |
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01-23-2003, 01:24 PM
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#3 | |
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Registered User
Join Date: Jun 2002
Location: DFW, TX
Posts: 1,680
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Quote:
 Heck, three of the bolts I can only get a wrench on so I can't tighten them too much. I'm just thinking it's hard to warp these headers that much when all the bolts are snug to start with and I just tighten them from there. I really need to get some better gaskets and locking bolts (as Phoenix mentioned in another thread).
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Scott Shelbourne |
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01-23-2003, 01:28 PM
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#4 |
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BeWarE tHe eViL CrAnkTOe!
Join Date: Oct 2002
Location: Yukon, OK
Posts: 3,605
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yep....that should help
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~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - 1986 Chevy Custom SWB *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84 |
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01-23-2003, 01:45 PM
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#5 | |
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RHCP afficianado
Join Date: Oct 2002
Location: McLoud, OK
Posts: 789
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Quote:
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~Ryan~ 89 S-10 Blazer with a 4.3L 96 Ford Crown Vic P71 4.6L V8. This car rocks.  Here are some links to some good music. Jack Johnson Donavon Frankenreiter |
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01-23-2003, 04:54 PM
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#6 |
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I'm back with 2nd truck!
Join Date: Feb 2002
Location: Texas
Posts: 3,775
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Stage 8 header bolts work for sure. With my aluminum heads the bolts would work loose. Not anymore.
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1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson |
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01-23-2003, 07:28 PM
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#7 |
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You get what you pay for
 
Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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I have aluminum heads and have never had a header bolt loosen up. What are you guys doing wrong?
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Mike 1985 Chevy C-10 |
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