292 main rear oil seal leak

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  #16  
Old 10-29-2014, 12:52 PM
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Picture



Here is a picture of what I am worried about with oil and something in my collection pan.
 
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Old 10-29-2014, 01:06 PM
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That looks like coolant to me. Not a good sign as there are not many ways for coolant to get into the crankcase. Best case, it's a leaking gasket, probably a head gasket. You can't drive it like that.
 
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Old 10-29-2014, 07:18 PM
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Couple of things

I do have a coolant leak, it is leaking on top of the crankcase under the intake manafold. Put another thing on my list to fix.

The crankcase ventalation system is not on the truck. I only have a bolt where the crankcase should be vented. could this be causing some of my oil leak problems by overpressurizing the crankcase?

The exhaust gas control valve is also missing on the truck, this is only a F100 with a two barrel carb so I do not see the engine being a heavy duty engine. Is it a problem that this valve is missing?
 
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Old 10-29-2014, 07:31 PM
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Originally Posted by Jack605
I do have a coolant leak, it is leaking on top of the crankcase under the intake manafold. Put another thing on my list to fix.

The crankcase ventalation system is not on the truck. I only have a bolt where the crankcase should be vented. could this be causing some of my oil leak problems by overpressurizing the crankcase?

The exhaust gas control valve is also missing on the truck, this is only a F100 with a two barrel carb so I do not see the engine being a heavy duty engine. Is it a problem that this valve is missing?
Yes, your crankcase can be building pressure. Heat riser, not an issue except cold engine operation may not be smooth, may take for ever to warm up and drive right. Double check all the bolts are in the heads, especially on the rear of the driver side.
 
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Old 10-29-2014, 09:33 PM
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You may not have a PCV system, but the engine would have a road draft tube...
 
  #21  
Old 10-30-2014, 03:01 PM
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P.O. bolted the vent location closed so now I have to deal with it.

Where can I get a parts list so I can try to find parts to re-install the crankcase vent system.
 
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Old 10-30-2014, 03:51 PM
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Ah, ok. Tracking. What an idiot!!!
 
  #23  
Old 10-30-2014, 03:56 PM
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Originally Posted by Jack605
P.O. bolted the vent location closed so now I have to deal with it.

Where can I get a parts list so I can try to find parts to re-install the crankcase vent system.
You'll have to improvise--the originals are very difficult to come by (though you may get lucky and find a road draft tube somewhere).

~Steve

 
  #24  
Old 10-30-2014, 05:31 PM
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If your block has the provision for it, I can probably find a road draft tube assembly somewhere around here. PM if you need it.
 
  #25  
Old 10-31-2014, 12:47 PM
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Now What

Okay Re-checked the belly pan for the vent hole location and mine does not have one. Can I provide venting to the engine block like my 69 vett? provide a line from the air filter to one of the valve covers, take a line from the other valve cover to the intake manifold through a PCV valve.
 
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Old 10-31-2014, 03:51 PM
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You can do it like the vette. A pcv valve really is the best choice. You will need to add a baffle for the valve cover with the pcv valve to prevent it from pulling oil into the intake.
I don't recall seeing a valley pan that did not have that hole, unless it is aftermarket. Do you have a stock valley pan?
 
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Old 10-31-2014, 03:56 PM
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I could not tell you if it is a stock pan or not I have only owned the truck for a few months. I have felt around the left back side of the pan and could not find a hole or any indication of a hole for the vent. Just trying to figure out a plan of action with this engine.

 
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Old 10-31-2014, 04:29 PM
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Plan B

Found a fitting from Jeg's that has a built in baffle, I am going to pull the intake manifold and the crank case cover and see if it is possible to install the fitting if it is I am going to use an in-line PCV valve and pipe it back to the intake manifold. If I get all the parts I will try to do this next weekend.

 
  #29  
Old 10-31-2014, 05:51 PM
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Originally Posted by charliemccraney
You can do it like the vette. A pcv valve really is the best choice. You will need to add a baffle for the valve cover with the pcv valve to prevent it from pulling oil into the intake.
I don't recall seeing a valley pan that did not have that hole, unless it is aftermarket. Do you have a stock valley pan?
The pre 61 or 62 car valley covers don't have a provision for a PCV. I had to find a 62-64 valley cover for my 57 292 when I wanted to add the PCV system. The Holley 4V carb I'm using has a port for the PCV sytem so I didn't have to run it to the manifold.
 
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Old 11-01-2014, 09:41 PM
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Originally Posted by hiball3985
The pre 61 or 62 car valley covers don't have a provision for a PCV.
However, they do still have the provision for the road draft tube setup, which looks very similar, if not the same as far as fastening to the valley pan, which is why I find it odd that there is nothing there.
 


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