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  #1  
Old 08-07-2011, 11:04 PM
Nakusp Nakusp is offline
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Default Manifold Problem

Hi, I stared my '59 T-Bird today and while it turned over there was a very loud bang like a canon firing and when I popped the hood to take a look there was a good size hole in the manifold between cylinder 6 and 7 right below the carb.

How do I tell if this is the only damage and not anything else inside the motor like a bent rod or blown piston or anything on the valve train.

Also anyone running a aftermarket manifold that are great? I am in the market for a new one as of today
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  #2  
Old 08-07-2011, 11:25 PM
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jopizz jopizz is offline
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The first thing to do is take off the valve cover and check the push rods and valve springs. If they look good you can take out the spark plugs and look down the holes with a flashlight to see the pistons. I've never seen a backfire bad enough to blow the manifold but I guess it's possible. There may have been carbon built up that obstructed the passages. As far as replacement manifolds the new ones I've seen don't have the oil fill tube so you would have to get valve covers with a fill hole.
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Old 08-08-2011, 01:27 AM
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I agree with Jopizz. When you remove your intake manifold, the damage will become more visible.

The only cause for a hole (I've ever seen) was due to a hard mechanical failure. Be careful not to turn the starter until you see all the damage. - Dave
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Old 08-08-2011, 06:30 AM
redstangbob redstangbob is offline
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How about a picture, this I gotta' see........
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Old 08-08-2011, 10:08 AM
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Quote:
Originally Posted by redstangbob View Post
How about a picture, this I gotta' see........
I second that request - WOW - hate to hear it and hope you are able to fix it easily.

Next question is - what caused it? I'd kind of like to avoid that situation. Were you using starting fluid? Maybe fuel with a verrrrrry high ethanol content? Exhaust completely blocked?

Eric
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Old 08-08-2011, 09:04 PM
Nakusp Nakusp is offline
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Here is pic of the hole, hopefully it works. I am going to try to make time to remove it tonight and look for more damage. I hope this is all there is wrong with it.

http://i167.photobucket.com/albums/u...kemanifold.jpg
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Old 08-08-2011, 09:25 PM
REM REM is offline
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I think you will be ok with another manifold.
It looks like the casting was very thin there.
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Old 08-08-2011, 10:01 PM
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I agree. It looks like other areas of your manifold are rusting through as well. See if you can find the metal piece that came out. If you don't see it right away, pull your intake manifold off and look down the intake ports in the heads with a light and a magnet.

Glad it wasn't more serious.

BTW, does anyone have a spare 4-bbl carb spacer for sale? I need one for a B7A-9425 B manifold (which is a std 4"x4"). - Dave
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Old 08-09-2011, 12:39 AM
Nakusp Nakusp is offline
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I got the manifold off tonight and it all looks pretty good underneath. No bent push rods, all valve springs are there and appear to be in good shape. I am also able to turn the engine over with a wrench on the front crank bolt without it binding up on me. The oil looks very clean and no signs of any metal shrapnel floating around anywhere. I pulled the #1 plug and the piston is there from what I can see through the tiny hole. Anything else I should be looking for?

One thing I noticed that I was curious about is that there wasn't any water in the manifold itself. Obviously I drained the coolant when I removed the t-stat but shouldn't there have been some water remaining in it? There wasn't one drop of water in left in it. The car is sitting on level ground and I only rolled it a few feet in the driveway from where the proble happend.

Last edited by Nakusp : 08-09-2011 at 01:07 AM.
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Old 08-09-2011, 02:09 AM
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My concern (as stated) is that missing cast piece. If it got sucked in to an intake chamber, use a strong light and a flexible magnet to find it. You sure don't want it going past an intake valve (those are the big ones).

Your intake manifold is dry.
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