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Old 03-30-2013, 04:47 PM
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Ticking noise (Videos Inside)

My built 350 SBC, has developed a ticking noise.

Here is a video with the motor running, it's idleing low here, it hasn't warmed up. But you can here the ticking.


And here is one with the motor off, it keeps ticking for a few seconds when turned off, and then stops.



Any ideas what this is?

I also have a fuel smell in my oil. The carb has flooded a few times lately as well.

Thanks guys.

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Old 03-30-2013, 05:00 PM
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Sounds like an exhaust leak to me. I bet you have a header bolt that is loose causing the gasket to blow. The nous with the car off is normal. Just sounds like its cooling off.

Chevyguy13
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Old 03-30-2013, 05:08 PM
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Quote:
Originally Posted by chevyguy13 View Post
Sounds like an exhaust leak to me. I bet you have a header bolt that is loose causing the gasket to blow. The nous with the car off is normal. Just sounds like its cooling off.

Chevyguy13
Thanks for the help. I was hoping it was something simple like that.

So, just a new gasket and tighten the bolts down good, should fix that?

Will it hurt to drive it a bit with a leak?
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Old 03-30-2013, 05:31 PM
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Yes, simple as that. It's not really going to hurt anything as long as that is what it is. From the video it sounds like a leak on the drivers side. I'd be willing to bet if you just tighten them up, it will quiet down a lot. You will still need new gasket to fix it right. You should see some black "soot" around the one that's leaking, but very easy to put in new gasket and fix it.
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Old 03-30-2013, 05:33 PM
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I agree with Chevyguy. Why don't you take a length of heater hose and use it like a stethoscope. One end to your ear and the other end to move around the engine searching for the noise. I've located many funny noises with a 2' piece of heater hose. You should be able to pin point where it's coming from.

BB
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fastnloud (03-30-2013)
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Old 03-30-2013, 06:38 PM
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Thanks guys.

Yeah, I checked and the closer you get to the driver side header, the louder it gets, so I think you guys are right.

Can, I get good header gaskets at a place like NAPA, or do I need to order them?
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Old 03-30-2013, 06:42 PM
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You need a new header gasket on at least the drivers side. The ticking when you turn it off is just the exhaust contracting.

When you install the new gasket(s) make sure you retighten the bolts after a few heat cycles.
Also be sure there are no imperfections on your flange or head surfaces.

K
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Old 03-30-2013, 06:45 PM
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Pretty much any auto parts store will have them. I use the individual felpro ones, but I really like the "soft" aluminum or copper ones as they won't blow out. I would just stay away from the really cheap paper type ones. Also you should be able to leave in the front and back header bolts. Just remove the rest and loosen those. The gasket should be "hooked" on each end and will slide over the loose front and rear bolts so you don't have to fight with the header/gasket to line the bolts up. Hope that makes sense.

Chevyguy13
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fastnloud (03-30-2013)
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Old 03-30-2013, 06:47 PM
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Make sure to follow KillerFormula's info as well. The bolts will tend to loosen up after heat cycles.
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Old 03-30-2013, 07:11 PM
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Alright, cool. I would like to get some copper ones if I can find them.

How do I go about measuring my header, to see what size I need? They are 1 7/8 long tubes.

EDIT: I found some aluminum ones on the NAPA site.
http://www.napaonline.com/Catalog/Ca...680_0359354427
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Old 03-30-2013, 07:17 PM
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Quote:
Originally Posted by boothboy View Post
I agree with Chevyguy. Why don't you take a length of heater hose and use it like a stethoscope. One end to your ear and the other end to move around the engine searching for the noise. I've located many funny noises with a 2' piece of heater hose. You should be able to pin point where it's coming from.

BB
X2. I add a funnel to the end of the hose. Easier to stick it to the side of my fat head. LOL!!
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Old 03-30-2013, 07:25 PM
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Well, it's showing that NAPA has to order them. It looks like it's quite a bit cheaper for me to order them from summit. I just gotta figure out exactly which ones I need, I think mine are square port.
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Old 03-30-2013, 07:40 PM
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X2. I add a funnel to the end of the hose. Easier to stick it to the side of my fat head. LOL!!
A funnel,huh? I tried that once but I had a problem. The only one I had was about 10" across so I just put it over my head. Boy I could hear great but I couldn't see a thing! I just went back to the old heater hose.

BB
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Old 03-30-2013, 08:33 PM
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When you remove the failed gasket it will be clear where the leak was.
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Old 03-30-2013, 08:37 PM
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Originally Posted by killerformula View Post
When you remove the failed gasket it will be clear where the leak was.
Yeah, I'm going to go ahead and get a set and do both sides. I'm going to check tomorrow and make sure what kind of port mine are.
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