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04-14-2012, 03:42 PM
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CC Member
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Join Date: Mar 2011
Cobra Make, Engine:
Posts: 54
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Not Ranked
Anyone have this problem?
I've had my cobra for a month now and I drove it yesterday and jumped on it a little hard and started hearing a funny exhaust note. At first I thought I'd blown the engine, but it was definitely the right side exhaust.
I called the guy I bought it from and he said that I probably blew a header gasket. He said I should tighten the header bolts every now and then to keep the headers tight up against the block, or I will probably blow a gasket.
Not a big deal, but thought I'd report this in case others suddenly have a strange sounding exhaust.
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04-14-2012, 06:56 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
yep, i get some off beat crackles and i know i have to tighten them up
__________________
Fred B
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04-15-2012, 08:27 AM
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CC Member
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Join Date: Dec 2004
Location: Kansas City,
KS
Cobra Make, Engine: jbl
Posts: 2,291
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Not Ranked
take the bolts out and put some rtv on the threads and reinstall, will help keep them from moving.
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04-15-2012, 10:55 AM
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CC Member
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Join Date: Mar 2005
Location: Mesa,
AZ
Cobra Make, Engine: FFR from Levy Racing 302 FI w/Edelbrock Performer heads
Posts: 1,644
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Not Ranked
RTV really? It doesn't burn off?
__________________
dave from mesa
Vietnam Vets may be eligible for medical care and disability compensation. Contact the VA if you have prostate cancer or type 2 diabetes. Finally got around to going to the VA.
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04-15-2012, 11:06 AM
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CC Member
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Join Date: Dec 2004
Location: Kansas City,
KS
Cobra Make, Engine: jbl
Posts: 2,291
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Not Ranked
Quote:
Originally Posted by dave from mesa
RTV really? It doesn't burn off?
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nope, doesn't burn off. |
04-15-2012, 07:41 PM
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CC Member
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Join Date: Sep 2009
Location: Camarillo,
CA
Cobra Make, Engine: SPF #2608, Roush 427SR T-W
Posts: 911
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Not Ranked
I've never tightened mine up. The installer (Vintage Upgrades in Humble, TX) musta used the right stuff.
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04-15-2012, 09:10 PM
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CC Member
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Join Date: Apr 2004
Location: Scotts Valley,
CA
Cobra Make, Engine: ERA 289 FIA #2108
Posts: 1,882
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Not Ranked
Exhaust gaskets are $15-$45 (okay, here in the US...). Why wouldn't you just replace the gasket?
It is a good practice to tighten your header bolts and your valve cover bolts from time to time. I learned this the hard way.
DD
__________________
Dangerous Doug
"You're kidding, right?"
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04-15-2012, 09:35 PM
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CC Member
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Join Date: Nov 2007
Cobra Make, Engine:
Posts: 327
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Not Ranked
bolt locks
just use some header bolt locks very easy, they wont back off.
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04-15-2012, 09:38 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,452
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Not Ranked
I havn't used a header gasket in years. Strictly hi-temp copper silicone sealant. I use the same silicone sealant on the threads of the bolts - you can't avoid it. I use average bolts, nothing special. I never loose a bolt, and I'v never blow a gasket.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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